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Disposable Pre-Slung Cargo Sling

Lift Sling Rigging Co., Ltd manufacture Textile disposable slings for single use lifts for lifting loads,High Tenacity Single Use One Way Lifting Sling,Disposable One-Way Lifting Sling.A disposable pre-slung cargo sling is a one-trip webbing band fitted to a bundle, a pallet or a reel at the packing station, so the unit arrives at the crane already rigged and the hook has nothing to make up. Lift Sling Rigging Co., Ltd makes the white flat woven band to the slinging plan, fixes the round turn and the loop height, and prints the working load limit that travels with the load.

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Release time：2026-09-25 08:25

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Lift Sling Rigging Co., Ltd manufacture Textile disposable slings for single use lifts for lifting loads,High Tenacity Single Use One Way Lifting Sling,Disposable One-Way Lifting Sling.

Lift Sling Rigging Co., Ltd produce Disposable Pre-Slung Cargo Sling,Pr e-Slung Cargo Sling,Pre-Slung Sling,Disposable Pre-Slung Sling,Pre-Slung Steel Tube Sling,One Trip Pre-Slung Sling.

Disposable Pre-Slung Cargo Sling — Rigged at the Packing Station, One Trip to the Destination

A disposable pre-slung cargo sling is a one-trip webbing sling that is threaded through the load before the load becomes cargo. The band is fitted at the packing station, the mill or the quay apron; the tube bundle, the pipe bundle, the timber unit or the bagged-cement pallet then travels with its own sling already in place, and the crane that finally lifts it has noth ing to rig — it has only to hook on. That single change of timing is what the word pre-slung buys, and it is the whole subject of this page.

The three words in the title come from three different vocabularies, and only two of them describe the article. Disposable describes the commercial trip: the sling is not recovered . Pre-slung describes a cargo-handling technique — it belongs to the shipping industry's own vocabulary, alongside palletised and unitised, and it appears in port regulations as a cargo category in its own right. Cargo sling names the set of bands that carry one unit. A buyer who searches for a disposable pre-slung cargo sling is therefore not asking for a new kind of sling; they are asking for a known one-trip band to be fitted at a place and a moment in the transport chain that the other pages on this site do not discuss.

Disposable pre-slung cargo sling rigged on a steel pipe bundle and taken up on a crane hook in a yard

A pre-slung steel pipe bundle at the moment of the lift: the band is already round the load, the loop is already above the top p ipe, and the crane has only to enter the hook. Everything that decided this lift was settled at the packing station, not here.

1. What "Pre-Slung" Actually Means, and Why It Is Not in the Sling Catalogue

Start with the trade definition, because it is not the definition a lifting-equipment buyer expects. In freight and port usage, pre-slung cargo is cargo shipped already in a sling or a net — prepared and loaded in advance, ready for the arrival of the vessel and for the loading that follows. The handling literature treats pre-slinging as a technique, listed in the same breath as palletisation, and applies it to palletised goods, sawn timber, bales, steel products and reels of newsprint. It is common enough that pre-slung shrink-wrapped bagged cement is desc ribed as an ordinary market article rather than a special order. In some port regulations, pre-slung cargo appears as its own tariff line, next to palletised, break-bulk and heavy-lift cargo.

Two facts follow from that, and both matter to what is made for you. The first is that pre-slung is not a product name. You will not find it in the two documents that govern the ar ticle itself — EN 1492-1, which covers flat woven webbing slings, and DIN 60005, which covers the one-way sling used for a single journey. Those standards describe a band: its fibre, its factor, its l abel, its test. Neither of them contains a clause that says where the band is put on. The second fact is that pre-slung is nevertheless a specification, because it fixes four things the band cannot decide on its own: the effective length, the form of the attachment, the number and spacing of the bands, and where the loop presents itself for the hook. Those four are engineering decisions, and they are made by whoever fits the band, at the place where it is fitted.

That is why a disposable pre-slung cargo sling is sold as an agreed fitting rather than a catalogue part number. The band is a standard one-trip article. The slung condition is what the or der is really buying, and it has to be described in a drawing before it can be quoted. A pre-slung sling is therefore quoted from a drawing, and the drawing is the quotation: change the bundle and you change the sling, even though the webbing is the same roll.

2. The Three Words in This Title, and What Each One Settles

Buyers arrive at this page with at least four different phrases, and the phrases are not synonyms. A short table is the fastest way to separate them, because each one answers a different question a nd leaves the others open.

The phrase	Which question it answers	What it leaves open
pre-slung pre-slinging	Where and when the band is fitted: at the packing station or mill, before the load becomes a cargo unit, so the unit arrives at the crane already rigged.	Everything about the band. A freight term is not a specification — the drawing still has to state length, form and factor.
disposable one trip single use	What happens at the end: the band travels with the load and is not recovered, so it is made for one journey rather than for a service life.	How many times the load may be picked up, and to what factor the band is made. The trip is a commercial fact, not a licence to lift carelessly.
cargo sling cargo set	The unit: the several bands that together carry one bundle or pallet, and where each of them sits along it.	Whether the lift is symmetrical, and whether the set is matched to a lifting rope. That is a separate decision, and it is made on the disposable cargo sling page.
steel tube sling pipe sling timber sling	The load's surface: what the band has to lie against, and the edges and finish it has to tolerate.	The fitting point. A tube sling can be supplied loose for the crane, or pre-slung at the works. Say which one your shipment ne eds.

The practical conclusion is short. An enquiry that says disposable pre-slung cargo sling, 2 tonne, for steel tube has named a category and a load but has not yet described a slung condition, because it has not said where the band is fitted, how far up the loop sits, how many bands carry the unit, or what the receiving end is expected to do with it. §3 to §6 of this page deal wi th those four, in order.

3. Where the Sling Is Fitted, and Why the Fitting Point Changes the Order

A pre-slung cargo sling can be fitted at any of three points in the chain, and the choice is not cosmetic — it decides who ties the first knot, what tooling exists to tie it, and what the band has to survive before it is ever loaded. The three points are worth naming separately because buyers who say "pre-slung" often mean only one of them, and a supplier who assumes the wrong one will quote th e wrong length.

White one-trip webbing bands pre-slung round a bundle of steel bar, two round turns already in place and the loops
standing above the bundle

Pre-slung in the literal sense: the white bands are already round the bundle of steel bar, and the loops are already standing ab ove the top layer. This is the condition the crane should receive. Every round turn in this photograph was made earlier, by someone standing at the bundle rather than under a load.

Fitting point	Who ties it, and with what	What it fixes for the order
the packing station or mill (the strict reading)	The producer's own packing line, working on a floor at a bench or on a strapping stand, with the bundle already formed and ban ded.	The length has to be settled against the bundle's finished circumference before the bundle is closed, because a compr ession band or a second strap may sit on top of the sling afterwards.
the quay apron or consolidation yard (the freight reading)	Port or stevedore labour, on the apron, in advance of the vessel — the arrangement the freight definition of pre-slung cargo d escribes.	The band is fitted to a bundle that is already complete, so the circumference is a known number, and the order can be split ac ross several cargo lots.
the vessel's gear, at the first lift (not pre-slung, strictly)	The crew or the stevedores at the hook, once the band is already in the ship's sling. The band is then only a one-trip band, n ot a pre-slung one.	Nothing, and the order should say so plainly. If the band is fitted at the hook it is a more ordinary article, and paying for pre-slung geometry is wasted.

Two consequences are worth stating because they are the reason this page exists rather than a paragraph on another one. First, a pre-slung band is under load for longer than a band fitted at the ho ok: it is fitted, then the unit may be strapped, stacked, moved by forklift, stored in a yard, craned onto a lorry, driven to a port, stored again and finally craned aboard, before the lift it was bou ght for. Second, the band is under slack load for most of that, which is the wear case a loose band does not see — the round turn abrades against the bundle edge each time the unit is handled . A pre-slung cargo sling should therefore be ordered with the handling that follows the fitting in mind, and not only with the final lift in mind.

4. The Four Dimensions the Packing Line Has to Fix

Once the fitting point is settled, four numbers describe the slung condition completely. They are all measured on the load rather than on the crane, which is why they cannot be left to the lifting crew. A pre-slung sling that is wrong in any one of them will either arrive with its loop too low to enter the hook, or arrive with an angle at the legs that the factor was never bought for.

Dimension	Measured against	What goes wrong if it is not stated
effective length of the band	The finished circumference of the bundle or pallet, plus the height the loop has to reach above the top layer.	The loop arrives below the top layer and has to be dug out by hand; or it arrives so long that the slack drags on the ground d uring every move.
eye height above the bundle	From the top of the load to the centre of the standing loop, with the band in its working position.	The hook cannot be entered without lifting the bundle, or the two bands cannot be gathered onto one hook by the crane alone.
form of the attachment	Whether the band makes a round turn round the bundle with both ends brought up, or a choke t hat tightens on itself as the load is taken.	A choke that was not intended grips the bundle and marks it, and tightens a turn that the packing line meant to stay slack. A round turn that was meant to choke lets the bundle slide.
number and spacing of bands	The length of the unit, and where its stiff points are — the middle of a long tube bundle is not where a band belongs if the b undle sags there.	The unit bows between two distant bands, or the bands gather at the centre and leave both ends unsupported.

One-trip white webbing loop marked WLL 0.5Ton 3M printed on the band, laid out flat so the printed length can be rea
d against the loop

The printed length on the band is not the length of the slung condition. A 3 m loop measured round a bundle of known circumferen ce leaves a calculable height of loop standing above the top layer — and that height, not the printed figure, is what the drawing has to state.

There is one further dimension that belongs to the load rather than to the band, and it is the one most often left out: the angle the two legs make at the hook. A sling bought as a flat band has its capacity stated for a straight pull or for a stated angle; when a pre-slung bundle hangs in two loops gathered on one hook, the legs are inclined, and the load in each band rises ac cordingly. The packing drawings for a pre-slung sling order should therefore carry the angle as well as the spacing, so that the factor the bands were made to is the factor they are actually used at. Where a shipment is repeated monthly, this drawing is worth making once and keeping — it is the document that a replacement order is placed from, and the reason a pre-slung order can be repeated witho ut re-measuring anything.

5. What the Slinging Plan Has to State

Because the four dimensions above are fixed on the load, they have to live somewhere. In practice that document is a one-page slinging plan — a packing drawing with the slung condition drawn onto i t. It does not need to be elaborate. It does need to be complete, because it is the only place where the agreement between the buyer and the sling maker is written down, and because the bands are cut to it.

Entry on the plan	An example, for a tube bundle
the unit	Bundled steel tube, 12 m, hexagonal pack, strapped with two steel bands, finished circumference 1,150 mm.
the bands and their positions	Two bands, at 2.5 m and 9.5 m from the leading end, both outside the steel straps and inside the end faces.
the attachment	Round turn under the bundle, both legs brought up the same side, loop standing 300 mm clear of the top layer.
the working load limit and the factor	2,000 kg per band at the stated angle, made to a 5:1 series, band printed with the working load limit in figures.
the edge condition	Sawn tube ends and steel strap edges to be covered by a sleeve or a corner protector where the band crosses them.
what the band is not for	Not for lifting the bundle on the flat with both loops on one side; the packing line to fit and the receiver to lift, and no o ne else to re-rig it.
what travels with it	Packing list entry, band batch reference, and a copy of this plan, one per bundle or one per lot as agreed.

A plan of this kind is short, and it does two things that no catalogue line can do. It lets the slings be cut in advance of the bundles being packed, and it lets a second person — the receiver, the surveyor, the port's own staff — read off how the unit is meant to be lifted without a telephone call. Where a shipment is regular, the same plan can be referenced by date and revision for every subs equent lot, which is why a pre-slung order placed from a plan can be repeated exactly, band for band, and why an order placed from an e-mail description usually cannot.

6. Rigger-Free Discharge: What the Receiving End Is Entitled to Expect

The commercial reason for pre-slinging is older than the word for it, and it is stated in the marine handling literature without embellishment: pre-slung goods have the advantage of quick loading a nd unloading. The saving is not mainly the cost of a sling. It is the cost of the people and the minutes that a loose load consumes at every point where it is lifted. A pre-slung unit is lifted as a u nit, and the rigging happens once instead of at each transfer.

That has a second effect that matters more in some trades than the time saved. When the bands are already fitted and the loops already stand up, the person who lifts the load does not have to climb onto it, reach under it or stand beside it while it is being made up. The rigging that carries the risk is done on the ground, on a bundle that is not yet suspended, by someone who is not under a loa d. Ports and terminals that receive unitised, pre-slung cargo are receiving an arrangement in which the load can be handled by a crane alone.

Slings in place under a load being lifted by a crane in a port yard, with the loops gathered on the hook and no one
under the load

The discharge the pre-slung order is buying: the loops are standing, the hook is gathering them, and the lift happens without a rigger on the load. Note that the slings in this photograph are general purpose bands in a yard lift, not one-trip articles — the arrangement is what a pre-slung order is intended to reproduce, wherev er the fitting is done.

What the receiving port is entitled to expect from a pre-slung sling consignment is therefore worth writing into the order rather than leaving to the first lift. In outline: bands already fitted an d evidenced; loops standing clear of the top layer so that a hook can enter without the bundle being lifted to fetch them; the plan available so that the unit's intended angle and spacing are known; a nd the identity of the bands recorded so that the consignment can be described in the shipping documents. Where a port has its own rules about how long objects and non-pre-slung lifts are handled, the difference between a pre-slung unit and a loose one is not a technicality — it is the difference between one handling arrangement and another.

7. What Travels With a Pre-Slung Unit

A pre-slung consignment carries more paper than an ordinary sling order, and the reason is simple: the band is being handed over as part of the cargo rather than as a tool of the buyer's crane. The band will be fitted by one company, loaded by another, carried by a third and discharged by a fourth, and none of the four will speak to the others while the unit is in transit. Whatever they need to know has to travel on the unit or with the documents.

Item	Why it is in the consignment
the marking on the band	The band is the only part of the consignment that stays with the load from the packing station to the destination, so the work ing load limit printed on it is the one figure that is always physically present. This is the same principle that governs the one-way article generally, and the label itself is described on the one way sling page.
the batch reference	It links the band in the yard to the record of the lot it came from, so a question about one bundle can be answered for the wh ole shipment. For a pre-slung order the reference should be written into the packing list line, not only into the sling maker's file.
the slinging plan	It is the only description of the slung condition, and therefore the only instruction a receiver can follow. One copy per lot is normally enough; one per bundle is sometimes asked for where a consignment is split at the port.
the fitting record	Who fitted the bands, on what date, at which station — a single line, but the line that answers the question a surveyor will a ctually ask, which is whether the band in the bundle is the band the plan specifies.
the disposal note	A one-trip band is finished with at the destination, and the destination is not the party that bought it. Saying on the plan t hat the band is to be withdrawn and destroyed rather than returned to service closes the one loop that pre-slung consignments most often leave open.

A one-trip flat webbing band laid out at full length so that its printed working load limit and length can be read
before it is fitted

Before it becomes part of a bundle, a pre-slung band is a printed article with a length and a working load limit. Once it is fit ted, the printing is the last part of it anyone will read — which is why the figures go on the band and not only on the paper.

8. Where a Pre-Slung Disposable Sling Is Used, and Where It Is Not

Pre-slinging is not restricted to one commodity. The handling literature applies it to palletised goods, sawn timber and bales, steel products and reels of newsprint, and describes pre-slung shrink -wrapped bagged cement as an ordinary market article. What those loads have in common is that each of them is a unit built by one party and lifted by another, several times, before it is consumed — wh ich is exactly the case where fitting the band early is worth doing.

Load	Why it suits a pre-slung disposable band	What the order has to add
steel tube and pipe bundles	The bundle is formed, strapped and measured at the mill, so the circumference is known and the pack is stiff enough to hold a loop standing.	Edge protection where the band crosses the sawn ends or the steel straps, and a spacing that puts the bands over stiff points rather than between them.
sawn timber, bales, pulp and newsprint reels	Loose, awkward units that are slow and risky to rig at the hook, and which are handled many times between the mill and the cus tomer.	A band wide enough not to cut into the pack, and a fitting that survives compression as the packs settle or shrink in transit.
shrink-wrapped bagged cement and other palletised bags	The wrap is not a lifting medium, so the band has to be under the wrap or through it, and it is cheapest to place it before th e pallet is wrapped.	A decision, taken with the packer, on whether the loop is passed through the wrap or left outside it — and a length that match es that decision.
coils, crates and fabricated units	Suited only where the unit can be pre-slung without the band being crushed or cut by its own base or frame during the journey.	Often none — a splayed or fabricated unit may be better lifted by a beam, and a disposable band is then the wrong article.

The negative case deserves its own sentence, because it is where a disposable band is most often misapplied. A pre-slung sling bought as disposable is bought for one journey of a unit that is lifted as a unit. It is not a substitute for a general purpose sling on a load that will be lifted repeatedly in the same works, it is not for lifting people or for any load carried under a person, and it is not for a slung condition whose angle keeps changing — a pre-slung arrangement is fixed by a plan, and a plan that has to be re-rigged at each lift has given up the advantage it wa s bought for. Where the load will be lifted with changing geometry, the right answer is a general purpose flat sling or a round sling, and this page's argument does not apply.

9. This Page and the Other Named Forms on This Site

"Pre-slung" is one of a handful of overlapping names in this category, and the site carries a page for each of them because they are asked for by different buyers. The distinctions are short and wo rth having in one place.

The other page	What it settles that this page does not
One Way Sling	The article and its documents: the standard written for a single-journey flat sling, the label it requires and the colour of t hat label, the series behind the factor, and how a large batch is proved.
Single Use Lifting Sling	The word single use itself: that it describes a journey rather than a number of lifts, what the factor means as a lab elling decision, and what has to be looked at before each lift.
Disposable Sling	Why an article is disposable in a particular order, which jobs justify a one-way trip, and the arithmetic that decides whether disposability pays on a given lane.
Disposable Cargo Sling and Steel Pipe Sling	The matched set — band plus lifting rope — and the five points at which such a set is loaded and unloaded along a transport ch ain, with the geometry that has to hold at each one.
Threaded steel bundle sling	The steel plant case in its own terms: threaded bar bundles, the lashing that holds them, and what a plant order has to state.
Disposable circular sling	The round form and the fibre choice — polyester against nylon — for buyers who need a sleeved loop rather than a flat band.

Read together, the six pages describe one category from six directions: the article, the word, the order, the transport chain, the plant case and the fibre. This page's own contribution is the one thing none of the others covers, namely the moment at which the band is fitted and what that moment decides.

10. The Band Itself: Fibre, Width and Factor for a One-Trip Article

The band used for pre-slinging is an ordinary one-trip flat woven webbing sling, and the general position on its fibre and its factor is set out elsewhere on this site, so only the parts that chang e when the band is pre-slung are given here.

Choice	The usual answer	What pre-slinging changes about it
fibre	High-tenacity polyester, which is what most published specifications for a single-journey band name as standard. Polypropylene is also offered in this category and is a different fibre with a different chemical story; the comparison belongs to the circular sling page.	Little. The band spends the journey under slack load rather than at working load, so the fibre's behaviour at full load is not the deciding property; its behaviour against damp, sunlight and abrasion over weeks of storage is.
width	Wide enough that the band does not cut into the pack or mark a finished surface, and narrow enough that the loop can be gather ed easily on one hook.	A pre-slung band is seen by the customer as part of the product's packaging, so surface marking matters more than it does on a tool that never leaves the works.
factor and series	A single-journey band is normally supplied to a lower series than a general purpose sling, which is the whole point of the cat egory and is explained on the single use page.	The angle at the hook is the buyer's to fix, and it is fixed in the plan. The series is bought against a stated angle, not aga inst an assumed vertical pull.
colour and marking	White webbing is the usual supply for this category, with the working load limit printed on the band and identification on the label rather than in the colour of the webbing.	A white band in a bundle of white-wrapped product is hard to see; where the pack is white, say so, because the marking has to remain readable at the destination.

One point on manufacture is worth adding for buyers who specify by standard. Lift Sling Rigging Co., Ltd organises production of these bands by reference to the safety factor and colour-code system of the EN 1492 series, and to the domestic series that governs flat webbing slings in our own market; the label and the single-journey provisions follow the documents described on the one way sling p age, which is where the numbering and the marking requirements are set out in full. If your market requires a particular document to be named on the packing list, tell us at the enquiry stage rather t han at the port.

11. What an Enquiry for a Pre-Slung Cargo Sling Has to Carry

Everything above reduces to a list. An enquiry that carries these eleven items can be quoted without a second round of questions, and the quote that comes back will be a quotation for a slung c ondition rather than for a length of webbing. Every pre-slung sling we cut starts from this list, and a list that arrives complete is the difference between one exchange of e-mails and four.

Item	Why the quote needs it
1. the load, and its finished dimensions	The circumference sets the length; the length and stiffness set the number and spacing.
2. the mass of the unit, not of the consignment	The working load limit is per band and per unit, so the weight of one bundle is the relevant figure and the number of bundles is not.
3. the fitting point	Mill, packing station, consolidation yard or port apron — §3 above, because it decides whether the band is cut before or after the bundle is closed.
4. round turn or choke	These are different slung conditions with different lengths and different marking behaviour.
5. the loop height required above the top layer	It is added to the circumference, and it is the number most often omitted from a first enquiry.
6. the number of bands per unit and their positions	The order is placed in dozens against a bundle count, so this figure becomes the quantity ordered.
7. the angle between the legs at the hook	The load in each band depends on it, so the working load limit cannot be confirmed without it.
8. the edge condition at the crossing points	Sawn tube ends, steel straps and pallet corners decide whether a sleeve or a protector is needed, and that changes the price.< /td>
9. the marking required on the band	Working load limit, length, batch reference and any customer mark; print is set once per order.
10. what travels with the shipment	The plan, the fitting record and the batch note are §7, and they are produced with the order rather than afterwards.
11. the destination and its rules	Some receivers handle pre-slung units under their own rules for long or unitised cargo; knowing the port lets us mark and docu ment the consignment for it.

A yard lift of steel rod bundles with the slings gathered at the hook, showing the spacing and hook angle a pre-slu
ng drawing has to reproduce

Spacing and hook angle, visible in a single photograph. A pre-slung drawing is an attempt to fix these two things in advance so that the same unit is lifted the same way at every point of its journey — including at points where nobody who made the drawing is present.

12. Frequently Asked Questions

Q1: What is a disposable pre-slung cargo sling?

A pre-slung sling is a one-trip flat woven webbing band fitted to a unit of cargo before that unit is moved, so that the load trav els already rigged and the crane that finally lifts it has only to hook on. The band is disposable in the commercial sense — it goes with the load and is not recovered — and pre-slung in the handling sense: the fitting is done at the packing station, at the mill or on the quay apron rather than at the hook. The two words describe the article and the arrangement respectively, and an order normally has to specify both.

Q2: Is "pre-slung" a standard term, or a catalogue word?

It is a trade term rather than a standard's term. Pre-slung and pre-slinging belong to the vocabulary of cargo handling and shippi ng, and pre-slung cargo appears as a recognised category in freight definitions and in port regulations. It does not appear in the standards that govern the sling itself: those describe the band — its fibre, its factor, its label and its test — and say nothing about where the band is put on. A supplier is therefore perfectly able to quote "pre-slung" while having no document to cite for it, and th e useful defence against that is to ask for the slinging plan described in §5.

Q3: Who fits the sling, and who is responsible for it?

Whoever the order says. The fitting can be done by the producer's packing line, by port or stevedore labour in advance of the vess el, or by the crew at the first lift. Responsibility follows the fitting point, which is why the point should be named in the enquiry and recorded on the plan: a band fitted at the mill and a band fit ted at the hook are attended by different people, working to different tolerances, and only one of them produces a pre-slung unit in the strict sense. In practice we supply the bands and the plan, and confirm the quantities, lengths and marking that the chosen fitting point requires.

Q4: How do I work out the length of a pre-slung band?

From the load, not from the crane. Take the finished circumference of the bundle or pallet, add the height the loop has to stand c lear of the top layer, and allow for the form of the attachment — a round turn under the bundle uses a different length from a choke that tightens on itself. The printed length on a one-trip band is t he length of the loop as made, and it is not the same number as the slung condition, which is why the plan is drawn with the load's own dimensions on it. If you can send a photograph of the bundle wit h its circumference and the loop height you want, we can work the length back from that and confirm it before cutting.

Q5: Does pre-slinging change the working load limit I need?

It changes the angle you have to state, which changes the load in each band. A pre-slung unit is normally lifted with its loops ga thered together on one hook, so the legs of the pair are inclined rather than vertical, and the tension in each band rises as the angle opens. The working load limit printed on the band is the figure for the condition the band was bought for, so the honest sequence is: fix the slung condition on the drawing, read the angle off it, and then buy the band against that angle. Buying a band first and d iscovering the angle at the port is how a well-made sling ends up being used outside its stated condition.

Q6: What loads are normally pre-slung?

The handling literature names palletised goods, sawn timber, bales, steel products and reels of newsprint, and treats pre-slung sh rink-wrapped bagged cement as an ordinary market article. The common thread is that each load is a unit built by one party and lifted by others several times before it is consumed: steel tube and pipe bundles, timber packs, pulp and paper reels, bagged products on pallets, and shrink-wrapped packs. Units that cannot be pre-slung without the band being crushed by their own base or frame during the journey — coils and some fabricated units — are usually better lifted by a beam, and a disposable band is then the wrong article.

Q7: Can a pre-slung disposable sling be re-used?

A band bought as disposable is bought for one journey, and the arrangement assumes it ends at the destination. It is made lighter and thinner than a general purpose sling because it is not built to be returned, stored and inspected for years, so putting it back into service means putting an uninspected article into a lifting sys tem. The one loop that pre-slung consignments most often leave open is the end of the journey: the band is withdrawn at a port or a customer's yard by someone who did not buy it, and unless the plan s ays otherwise it may simply be left in the pack or set aside. Saying on the plan that the band is to be withdrawn and destroyed is the cheapest control available, and it costs one line.

Q8: How is a pre-slung band marked?

On the band, with the working load limit in figures and the length, plus the batch reference; identification follows the label rat her than the colour of the webbing, which for this category is normally white. The full list of label items and the colour convention for the label itself are set out on the one way sling page, becaus e they belong to the article rather than to the fitting. What pre-slinging adds is a reason for the marking to be legible at the far end: a pre-slung band is read by the receiving party, not by the pa rty that bought it, so specify a colour and a print that survive the journey and remain readable against your own packaging.

Q9: What should I ask a supplier for, beyond the price?

Three things. First, the slinging plan: a drawing of the unit with the bands, their positions, the attachment, the loop height and the angle written on it — if a supplier cannot produce one, they are selling you webbing rather than a slung condition. Second, the marking that will be printed on the band, in writing, before the or der is placed. Third, confirmation of what travels with the shipment: the batch reference for the packing list and, where the consignment is split, the copies of the plan. All three are produced as pa rt of the order and none of them should be an extra.

Q10: How does pre-slinging compare with simply buying bands and fitting the m at the port?

Fitting at the port is a legitimate arrangement and is what the freight definition of pre-slung cargo often describes: cargo prepa red on the apron in advance of the vessel. The difference is what the band is measured against. If the bands are bought loose and fitted at the apron, the length has to suit a bundle that is already f inished, and the fitting has to be done by whoever is on the apron that day. If the bands are bought to a plan and fitted at the packing station, the length can be settled against the bundle as built, the loops can be positioned over the pack's stiff points, and the fitting is done by people who know the unit. The second route costs more planning and less rigging; on a repeated lane it is usually the cheaper of the two in total.

Contact

Lift Sling Rigging Co., Ltd manufactures the one-trip flat woven webbing band used for pre-slung cargo as well as the slinging plans that go with it. Send us the finished dimensions of the unit, th e mass of one bundle, the fitting point and the loop height you need, and we will work the band length back from them, confirm the marking that will be printed on the band, and quote the bands, the co rner protection and the documentation as one order. If you already have a drawing, send the drawing.