One Way Single Ply Endless Polyester Flat Lifting Webbing Sling

A one way single ply endless polyester flat lifting webbing sling is a closed loop of flat woven polyester webbing – one ply, joined to itself, with no eye, no end and no fitting anywhere on the article. It is bought for one journey and supplied with the load rather than drawn from a sling store. ప్రామాణిక పరిధి: 1 t నుండి 12 t working load limit on 4 mm వెబ్బింగ్, widths 25 mm నుండి 300 మి.మీ at a 5:1, 6:1 లేదా 7:1 కారకం, loop lengths 0.5 m నుండి 100 m, colour coded to BS EN 1492-1 and supplied with a blue label stating the working load limit, పొడవు, the factor and the batch.

Why a Loop Suits a One-Trip Band

The two halves of this name answer two different questions. ఒక మార్గం is commercial: the band travels with the pack, is used once, and is not recovered or re-issued. అంతులేని is structural: the band is joined to itself, so there is nothing to thread and nothing to align.

Put together, they answer what actually goes wrong at the far end of a consignment: the person re-slinging the load has no rigging plan, no sling store and no second choice, and a loop asks nothing of them.

• Nothing to align. An eye has to meet a hook of the right size the right way round. A loop is dropped over the load or passed round it, and the pick works whichever way it lands.
• Nothing to bruise a finish. No stitching stack at the bearing point, no thimble, no shackle in contact with the load. On coated pipe, anodised section or polished sheet that is the whole protection.
• Nothing to lose. A band with fittings can arrive with the fittings gone. A loop is one piece of webbing and it is either there or it is not.
• Nothing to get wrong on length. The one exception on this list, and it is the one that matters most – see the section on length below, because a loop is quoted two ways and they differ by nearly a factor of two.

స్పెసిఫికేషన్లు

Sizing: Width Follows the Figure and the Factor

Width is not a free choice: it follows from the working load limit and from the factor, which is why the same tonnage appears three times below with three widths. ఎ 7:1 band is wider and heavier than a 5:1 band of the same figure – that is the cost of the extra factor, not a different grade of webbing.

The same width ladder, in the looped-end form, is published on the single use lifting slings పేజీ – useful when a consignment needs eyes at the top and a loop at the bottom, which is two articles rather than one.

Maximum length is 100 m in one continuous loop. Longer lengths, intermediate widths, extra-wide loops and special colours are made to order. Nothing in the table is a stock size: the figure, the factor, the width and the length together describe a band made to your line.

Two readings catch buyers out. ది minimum length follows the width, టన్ను కాదు: 25 mm పడుతుంది 0.5 m, 50 మరియు 75 mm పడుతుంది 1.0 m, 100 కు 150 mm పడుతుంది 1.5 m మరియు 200 mm మరియు అంతకంటే ఎక్కువ తీసుకోండి 2.0 m. మృదువైన ఉపరితలం కోసం విస్తృత బ్యాండ్‌ని కోరుకోవడం అంటే ఎక్కువ కాలం కనిష్టాన్ని అంగీకరించడం, చిన్న ప్యాక్‌లో ఆర్డర్‌ను నిర్ణయించే లైన్. మరియు ది weight column is a handling figure: నిచ్చెన పైభాగంలో వంద మీటర్ల 300 mm band is over a quarter of a tonne, మరియు బ్యాండ్‌లు ఏదైనా ఎత్తే ముందు సరుకుగా ప్రయాణిస్తాయి.

పొడవు: the Two Conventions, and Why It Matters More Here

A loop has no ends to measure between, so this trade quotes the same article two ways: ది చుట్టుకొలత of the loop, మరియు ది length of the band laid flat. For the same sling the two figures differ by about a factor of two. Both are legitimate; only one of them is the figure you meant.

On a reusable sling the mistake shows up at the next lift and is corrected from the store. On a one-way band it shows up at the far end, in front of a customer, with no second band to swap in – which is why this is the single line worth getting right on the enquiry. State the convention with the figure, or state the use instead (the girth of the article the loop must go round), and the ambiguity disappears before the band is cut.

The Three Hitches, and What Each One Carries

The same loop works in three arrangements, and the figure on the label only describes the first of them. This is the most common error on an endless band, because all three are rigged without any change to the article.

The choke is the arrangement a loop is bought for – it is what grips a pipe, a pole or a drum – and it is also the one that costs 20 % of the figure. కాబట్టి ఎ 4.5 t pipe bundle choked on a 5 t loop is an overload, not a margin, and the answer is the next width up rather than a longer band. Where the loop is used as a basket under a bundle, both sides carry and the figure doubles; where it is used vertically, the label figure applies as printed.

One Way Is a Commercial Life, Not a Lower Grade

ఈ పదం ప్రయాణాన్ని వివరిస్తుంది, మరియు మరేమీ కాదు: ఫైబర్, నేత, వెడల్పు, కారకం, working load limit and marking are specified exactly as for a band used for years, and buying a narrower band or a lower factor because it is only going one way is not a saving – ఇది లిఫ్ట్ నుండి తీయబడిన రేటింగ్ లేని మార్జిన్. What does change is the record. On a reusable sling the inspection history is the evidence; on a single-trip band there is no history after the lift, కాబట్టి the print on the band and the packing list carry the whole traceability. The returnable version of the same loop, inspected between lifts and drawn from a store, is the single ply endless flat sling.

• Marking is part of the specification, not the paperwork. పని లోడ్ పరిమితి, పొడవు, కారకం, మరియు డెస్పాచ్ వాస్తవానికి ఉపయోగించే సూచన – ఒక ప్యాక్ సంఖ్య, an order number, your own part number. That reference is what ties a band on a quay to a line on a packing list in an office.
• ప్రయాణం తర్వాత స్పష్టంగా, ఉత్పత్తి తర్వాత కాదు. గణాంకాలు లారీని తట్టుకుని నిలబడాలి, ఒక కంటైనర్ మరియు లోడింగ్ బే. చిన్నది అని ముద్రించండి, low-contrast, or on a face that enters the choke is print that will not be read.
• రెండవ ఛానెల్‌గా ఒక రంగు. ప్యాక్ రకానికి ఒక రంగు, ఒక్కో కస్టమర్‌కు లేదా టన్నేజీకి ఒకే విధమైన బ్యాండ్‌ల కంటైనర్‌ను ఒక చూపులో క్రమబద్ధీకరించవచ్చు, and on a made-to-order band it costs nothing.

Counting: One Band per Pick Point, per Pack

One-trip bands are bought in the same arithmetic as the packing, and it is done once because nothing comes back. ప్యాక్ నుండి లెక్కించండి, టన్ను నుండి కాదు: two picks per pack is two bands, నాలుగు పాయింట్ల లిఫ్ట్ నాలుగు, and ninety packs at two picks is 180 బ్యాండ్లు. ఉద్దేశపూర్వకంగా నిర్వహణ భత్యాన్ని జోడించండి – two to five per cent covers the band cut on a sheet edge while the pack is made up – so a shortfall becomes a line on the order instead of a delay at the dock. Where the bands are packed inside a crate, స్టైలేజ్‌కి స్ట్రాప్ చేయబడింది లేదా బండిల్‌లో టేప్ చేయబడింది, the sling becomes a line on the bill of materials: ఒక భాగం సంఖ్య, a loop length, a colour and a print that does not change between shipments.

Where a One-Trip Loop Is the Right Order

The Single Inspection, and What It Looks At

A one-trip band has one inspection in its life and it happens before the load, ఒక లోపం ఇప్పటికీ అదే సరుకు నుండి భర్తీ చేయవచ్చు. నాలుగు అంశాలను పరిశీలిస్తారు, ఈ క్రమంలో: the weave where it meets the load (కోతలు, రాపిడి, a glazed or pinched face), the join where the loop closes, the label – because an unreadable figure cannot be matched to the pack it was cut for – and what the band has been lying in. గ్రిట్, స్వర్ఫ్, చమురు మరియు నిలబడి ఉన్న నీరు పరిచయంలోకి ప్రయాణిస్తాయి, and a clean band is the cheapest protection on the list.

పదునైన అంచుల నుండి రక్షించండి, hot surfaces and welding spatter with a sleeve or a padded protector, never shorten a sling with a knot, never join two slings by knotting them, and never repair webbing by stitching, welding or heating. At the destination the band is disposed of, నిల్వ లేదు: a one-trip band that comes home to a rack gets issued again, and its marking then states something that is no longer true.

తరచుగా అడిగే ప్రశ్నలు

What is a one way single ply endless polyester webbing sling?

A closed loop of flat woven polyester webbing, one ply thick, joined to itself with no eye, no end and no fitting. It is bought for one journey, supplied with the load and not recovered. The standard range runs 1 t నుండి 12 t on 4 mm వెబ్బింగ్, 25 mm నుండి 300 mm వెడల్పు, with loop lengths from 0.5 m నుండి 100 m.

How is the length of an endless sling loop measured?

Two ways, and they differ by about a factor of two: the circumference of the closed loop, and the length of the band laid flat before joining. సమావేశానికి పేరు పెట్టండి, or name the girth of the load instead – that is the form that leaves nothing to interpret.

Is a one-trip endless band weaker than a reusable one?

నం. Width follows the working load limit and the factor in exactly the same way, మరియు బ్యాండ్‌పై ముద్రించిన బొమ్మలు లిఫ్ట్‌కు వర్తించే బొమ్మలు. What changes is that the band is not recovered, so the print and the packing list carry the whole record of it.

Which safety factor should I order – 5:1, 6:1 లేదా 7:1?

7:1 is the design factor used for general-purpose flat woven webbing slings under European practice and is the usual choice with colour coded bands under BS EN 1492-1. 5:1 is the customary North American figure for synthetic webbing slings and 6:1 వాటి మధ్య కూర్చుంటాడు. వేరొక కారకం వద్ద ఒకే టన్ను వేరొక వెడల్పుతో విభిన్న వ్యాసం, కాబట్టి అంశం విచారణలో ఉండాలి.

Can an endless webbing loop be used in a choker hitch?

అవును, and it is what a loop is best at – it is how a pipe, a pole or a drum is gripped. ఉక్కిరిబిక్కిరి అయిన మూర్తి 0.8 of the vertical figure, కాబట్టి a 5 t loop chokes 4 t. Select the width for the arrangement you will really use, not for the vertical figure on the label.

Single ply or double ply endless sling?

Single ply is the lighter, more flexible and more economical build, and it is the right answer for most lifts up to 12 t and for anything that has to be threaded through a tight space or wrapped round a small diameter. Double ply buys a higher figure at the same width, or a stiffer, wider bearing face – at more weight and more cost per band.

Can the band be printed with our own reference or packed with our product?

Yes to both, and they are usually ordered together. పని లోడ్ పరిమితి, the loop length and your own pack, order or part number can be printed as a production instruction, in the exact string and case you send; the bands can be packed inside a crate, స్టైలేజ్‌కి స్ట్రాప్ చేయబడింది లేదా బండిల్‌లో టేప్ చేయబడింది, labelled per pack and listed on the packing list with the reference that matches the print.

కొటేషన్‌ను అభ్యర్థించండి

Send the pack and its travelling mass, the pick points and their spacing, అమరిక, the girth at each pick, the safety factor your market works to, and the reference to print. We come back with the width, the loop length, the finished weight and the marking – on a drawing, before the band is cut.

Send your loop specification for a quotation

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సంబంధిత ఉత్పత్తులు

• సింగిల్ ప్లై అంతులేని ఫ్లాట్ స్లింగ్ – the returnable version of the same loop
• Single use lifting sling, అంతులేని లూప్ – the single-trip range
• Single use lifting slings – the category, and the other three end forms
• Disposable webbing sling one eye – where the band is hooked, not wrapped
• Single ply eye-eye webbing sling – the same band with two sewn eyes
• అంతులేని ట్రైనింగ్ స్లింగ్ – the category, and choosing by the load
• అంతులేని రౌండ్ స్లింగ్ – a sleeved core for awkward shapes
• Polyester webbing sling – ఫైబర్, and the elongation figure
• కార్గో లిఫ్టింగ్ నెట్ – అదే సరుకు, స్లంగ్‌కు బదులుగా నెట్‌డ్