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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. Standard range: 1 т да 12 т working load limit on 4 мм шнур, кумдык-влак 25 мм марте 300 мм а 5:1, 6:1 але 7:1 фактор, loop lengths 0.5 м марте 100 м, colour coded to BS EN 1492-1 and supplied with a blue label stating the working load limit, кужытшо, the factor and the batch.
Why a Loop Suits a One-Trip Band
The two halves of this name answer two different questions. One way is commercial: the band travels with the pack, is used once, and is not recovered or re-issued. Мучашдыме 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.
Specifications
| Параметр | Вариант-влак |
|---|---|
| Продукт | One way single ply endless polyester flat lifting webbing sling / ик пачаш мучашдыме лапка рогатка |
| Формо | Петыралтше цикл, flat woven, joined to itself; no eye, мучашдыме келыштарыме |
| Куруу | Ик пачаш – one layer of webbing forms the whole loop |
| Клетчатке | Кӱкшӧ пеҥгыдылыкан полиэфир (ПЭС); nylon and polypropylene available for specific duties |
| Web thickness | 4 мм стандарт |
| Паша нагрузко чек | 1 т – 12 т, ик пачаш |
| Полоса кумдык | 25 мм – 300 мм, set by the working load limit and the factor |
| Лӱдыкшыдымылык фактор | 5:1 / 6:1 / 7:1, selected at order |
| Loop length | 0.5 м – 100 м, minimum rising with the width |
| Пеледыш | BS EN 1492-1 capacity colour; special colours and printed logos on OEM orders |
| Этикетке | Blue label: паша нагрузко чек, кужыт, лӱдыкшыдымылык фактор, партийын номерже |
| Паша жап | Ик путешествий – тӧрланен огыл, угыч лукмо огыл |
| HS код | 630790 |
Размер: 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. ИК 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.
| WLL | 5:1 | 6:1 | 7:1 | Мин. loop | кг/м годым 7:1 |
|---|---|---|---|---|---|
| 1 т | 25 мм | 25 мм | 30 мм | 0.5 м | 0.20 |
| 2 т | 50 мм | 50 мм | 60 мм | 1.0 м | 0.60 |
| 3 т | 75 мм | 75 мм | 90 мм | 1.0 м | 0.78 |
| 4 т | 100 мм | 100 мм | 120 мм | 1.5 м | 0.90 |
| 5 т | 125 мм | 125 мм | 150 мм | 1.5 м | 1.14 |
| 6 т | 150 мм | 150 мм | 180 мм | 1.5 м | 1.33 |
| 8 т | 200 мм | 200 мм | 240 мм | 2.0 м | 1.85 |
| 10 т | 250 мм | 250 мм | 300 мм | 2.0 м | 2.05 |
| 12 т | 300 мм | 300 мм | 300 мм | 2.0 м | 2.70 |
The same width ladder, in the looped-end form, is published on the ик гана кучылтмо нӧлталтше строп-влак лаштык – 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, кокла кумдык-влак, extra-wide loops and special colours are made to order. Nothing in the table is a stock size: the figure, фактор, the width and the length together describe a band made to your line.
Two readings catch buyers out. Лийшаш minimum length follows the width, тоннаж огыл: 25 мм налеш 0.5 м, 50 жана 75 мм налаш 1.0 м, 100 чейин 150 мм налаш 1.5 м да 200 мм да ӱлнӧ налаш 2.0 м. Йомша ӱмбаллан кумда тасма кӱлеш гын, кужурак минимумым налаш кӱлеш, кӱчык пакетыште радамым рашемдыше линий. А weight column is a handling figure: на вершине лестницы сто метров 300 mm band is over a quarter of a tonne, да группо-влак нимомат нӧлталме деч ончыч груз семын коштыт.
Кужыт: 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: Лийшаш йыргешке of the loop, да 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.
| You write | It means | When to use it |
|---|---|---|
| Loop circumference 4.0 м | One full turn round the load, measured round the closed loop | The band is ordered to wrap a known girth |
| Band length 2.0 м, laid flat | The webbing cut length before joining, пел йыргешке | The band is priced and cut by the metre |
| Girth at the pick 1.6 м, two picks | The dimension of the load itself, and the number of bands | The safest form on a first order: it needs no convention at all |
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.
| Верланымаш | Фактор | ИК 5 t loop gives |
|---|---|---|
| Вертикальысе – loop hangs, load on one side | 1.0 | 5.0 т |
| Шӱшкылын – round the load and back through itself | 0.8 | 4.0 т |
| Корзинка, legs 0-45° | 2.0 | 10.0 т |
| Корзинка, legs 45-60° | 1.4 | 7.0 т |
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. Тыге а 4.5 t pipe bundle choked on a 5 t loop is an overload, маржа огыл, 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
The word describes the journey, and nothing else: волокно, weave, лопкыт, фактор, 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 – тиде лифт гыч лукмо рейтингдыме маржа. 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, ошондой 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, тиде ик пачаш мучашдыме лапка рогатка.
- Marking is part of the specification, not the paperwork. Паша нагрузко чек, кужыт, фактор, да отправке чынжымак кучылтмо справкым – пакет номер, 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.
- Путешествий деч вара лудаш лиеш, производство деч вара огыл. Цифр-влак грузовик дене илен лекшаш улыт, контейнер да грузитлыме вер. Изи печать, low-contrast, or on a face that enters the choke is print that will not be read.
- Кокымшо канал семын тӱс. Пакет типлан ик тӱс, кажне клиентлан але кажне тоннажлан икгай тасма гыч шогышо контейнерым ик ончалтыш дене сортироватлаш лийме ӱзгарыш савыра, 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. Count from the pack, not from the tonnage: two picks per pack is two bands, a four-point lift is four, and ninety packs at two picks is 180 группо-влак. Намеренно обрабатыватлыме пособийым ешарен – 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, стилаж дене пижыктыме але пуч дене пижыктыме, the sling becomes a line on the bill of materials: ужаш номер, a loop length, a colour and a print that does not change between shipments.
Where a One-Trip Loop Is the Right Order
| Load | What decides the band | Usual build |
|---|---|---|
| Пырдыж дене леведалтше полат труба, суставлаште | Band width is the coating’s only protection from the band doing the lift; measure the two pick positions from an end | 100-150 мм, 4-6 т, 7:1 |
| Труба але труба пуч дене | Пакет — тиде нагрузко; кажне позиций уло пакет гыч шке пайжым нумалеш, and the girth sets the loop | 150-200 мм, 6-8 т, 7:1 |
| Steel sheet and plate stacks | Пӱчкедыме лист ӧрдыж — тиде ургымо тасма ваштареш лезвий, so the height of the stack and the direction of the band both matter | 100-150 мм, 4-6 т, 7:1 |
| Пушеҥге, logs and packs | The arris prints a line into dressed stock and cuts the weave on a narrow band | 125-200 мм, 5-8 т, 7:1 |
| Coils, кӱ да йыргешке ужаш-влак | A closed loop is the natural form; the choke grips and the width spreads the pressure | 150-300 мм, 6-12 т, 7:1 |
| Machinery and finished assemblies | Nothing metallic touches the load at either end, which on a painted or ground surface is the reason to buy it | 50-125 мм, 2-5 т, 7:1 |
The Single Inspection, and What It Looks At
A one-trip band has one inspection in its life and it happens before the load, кунам экшыкым эше ик партий гыч вашталташ лиеш. Ныл арверым ончат, тиде радам дене: the weave where it meets the load (пӱчкеда, истирание, 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. Грит, шемшыдаҥ, нефть да шогышо вӱд контактыш пурат, and a clean band is the cheapest protection on the list.
Тудым пӱсӧ ӧрдыж деч аралыза, 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, да нигунамат пидме дене ӱштым тӧрлаташ огыл, сварке але шокшо. At the destination the band is disposed of, аралалт кодын огыл: a one-trip band that comes home to a rack gets issued again, and its marking then states something that is no longer true.
Чӱчкыдын пуымо йодыш-влак
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 т да 12 t on 4 мм шнур, 25 мм марте 300 мм кумдык, with loop lengths from 0.5 м марте 100 м.
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. Конвенцийым лӱмдыза, 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?
Жок. Width follows the working load limit and the factor in exactly the same way, да тасмаште печатлыме цифр-влак лифтлан келшыше цифр-влак улыт. 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 але 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 нунын коклаште шинча. Тӱрлӧ фактор дене икгай тоннаж — тиде тӱрлӧ кумдык дене тӱрлӧ арвер, сандене фактор йодыштмаш ӱмбалне лийшаш.
Can an endless webbing loop be used in a choker hitch?
Ооба, and it is what a loop is best at – it is how a pipe, a pole or a drum is gripped. Пӱтыртышӧ еҥ 0.8 of the vertical figure, тыге а 5 t loop chokes 4 т. 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. Паша нагрузкын чекше, 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, стилаж дене пижыктыме але пуч дене пижыктыме, labelled per pack and listed on the packing list with the reference that matches the print.
Request a Quotation
Send the pack and its travelling mass, the pick points and their spacing, келыштарыме, the girth at each pick, the safety factor your market works to, and the reference to print. We come back with the width, циклын кужытшо, 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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