8" X 1 Layer X 16 FT X 21,150 LBS Class 7 ASME B30.9 WSTDA-WS-1 Single Ply Polyester Endless Web Sling for Industrial Lifting Rigging Crane Hoist
- Dawson Group Ltd. - China Manufacturer, Supplier, Factory
DAWSON — Lifting & Rigging, Engineered for Safety Worldwide.
Single Ply Type V Endless Web Sling – ASME B30.9, WSTDA-WS-1 Class 7
✅Product Overview
This is a continuous loop formed by joining the ends of the webbing together with a load bearing splice. They are made of Polyester or Nylon. The minimum safety factor is 5:1.We make these products according to ASME B30.9 WSTDA-WS-1. Customers could choice special length based on special require.
✅Material & Construction
Product Name: Single Ply Type V Endless Webbing Sling – Class 7
Construction: For lifting building materials, steel beams, and heavy machinery.
Marine & Offshore: For cargo and container handling on ships, docks and offshore rigging.
Manufacturing: Factory lifting and relocation of heavy equipment and machinery.
We make these products according to ASME B30.9, WSTDA-WS-1, Customers could choice special length base on special require.
✅What Does "Single Ply Endless Webbing Sling" Mean?
Single Ply Type V Endless Webbing Sling is a Class 7 Polyester sling complying with ASME B30.9 and WSTDA-WS-1. It features a 5:1 safety factor, low stretch and flat profile, ideal for low-clearance thread-through rigging. Suitable for heavy-lift, offshore, pipeline and steel coil lifting applications.
In the industry, this endless sling is classified as Type V under WSTDA-WS-1. It accepts three main hitches:
Vertical Hitch – straight lift
Choker Hitch – grips the load when tightened
Basket Hitch – cradles the load for maximum capacity
Q1: What standards apply to your Single Ply Endless Webbing Sling?
A: Our Single Ply Type V Endless Webbing Sling follows WSTDA-WS-1 and ASME B30.9, built with Class 7 polyester webbing to satisfy North American synthetic rigging standards.
Q2: Why is the 5:1 safety factor critical for this Type V endless webbing sling?
A: This Single Ply Endless Webbing Sling adopts a 5:1 safety factor as mandated by WSTDA-WS-1, designed for reliable heavy-lift rigging under variable site loads.
Q3: Will the WLL vary when using different hitches on this Single Ply Endless Webbing Sling?
A: Yes. This Type V endless sling works with vertical, choker and basket hitches, and its working load limit differs across each lifting configuration.
Q4: What unique benefit does a Single Ply Endless Webbing Sling offer over double ply?
A: The Single Ply Endless Webbing Sling has a slim flat profile for low-clearance thread-through rigging. Double-ply versions deliver higher WLL but lack flexibility in tight spaces.
Q5: Is this WSTDA-WS-1 Type V sling suitable for dynamic offshore heavy lifting?
A: Yes. The Class 7 polyester Single Ply Endless Webbing Sling features low stretch and high strength-to-weight ratio, fit for offshore, pipeline and steel coil rigging.
Q6: What details are printed on the tag of this Type V endless webbing sling?
A: The sling tag permanently marks WLL, compliance standards and product information. Verify tag data before every lift with the Single Ply Endless Webbing Sling.
Q7: What defects require immediate retirement of this ASME B30.9 endless lifting sling?
A: Under ASME B30.9 rules, take this Single Ply Endless Webbing Sling out of service if cuts, tears, abrasion or chemical damage appear.
Q8: Can you produce custom-sized WSTDA-WS-1 endless webbing sling with full standard marking?
A: Yes. Custom width and length Single Ply Type V Endless Webbing Sling are available. All custom slings carry WLL tags and satisfy WSTDA-WS-1 & ASME B30.9.
⚙️Typical Capacity Reference: Single Ply Endless Type Webbing Sling Class 7 (9,800 lb/in width)
Item
Webbing Width (inch)
Vertical
Choker
Vertical Basket
60 Basket
45 Basket
30 Basket
M.B.S.
lbs
lbs
lbs
lbs
lbs
lbs
lbs
DSWSEN-1-9010
1
3,200
2,560
6,400
5,543
4,525
3,200
16,000
DSWSEN-1-9015
1 - 1/2
4,600
3,680
9,200
7,768
6,505
4,600
23,000
DSWSEN-1-9017
1- 3/4
5,400
4,320
10,800
9,353
7,636
5,400
27,000
DSWSEN-1-9020
2
6,200
4,960
12,400
10,739
8,767
6,200
31,000
DSWSEN-1-9030
3
9,400
7,520
18,800
16,281
13,292
9,400
47,000
DSWSEN-1-9040
4
12,400
9,920
24,800
21,477
17,534
12,400
62,000
DSWSEN-1-9050
5
15,600
12,480
31,200
27,020
22,059
15,600
78,000
DSWSEN-1-9060
6
18,600
14,880
37,200
32,216
26,300
18,600
93,000
DSWSEN-1-9080
8
21,150
16,920
42,300
36,632
29,907
21,150
105,750
DSWSEN-1-9100
10
26,450
21,160
52,900
45,812
37,401
26,450
132,250
Welcome to buy the newest and competitive price DAWSON ASME / ANSI B30.9 WSTDA-WS-1 Synthetic Endless Type Webbing Sling for Lifting from our factory. We're one of the leading China manufacturers and suppliers, offering you the wholesale service and the OEM service at a discount. With CE certification, our products made in China in stock are high in quality and low in price. Please be free to get the free sample from us.
Other sizes can be produced upon request, more information, please contact us: info@dawson-group.com
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2.Application of Synthetic Endless Type Webbing Sling (ASME / ANSI B30.9):
