Chain sling Grade 80 QOF

4-pointsteelalloy

Product Overview
Grade 80 QOF Chain Sling is a quad-leg lifting assembly manufactured from quenched and tempered Grade 80 alloy steel chain and components. The sling is equipped with a quad oblong master link assembly on the top and Grade 80 forged hooks on the bottom, suitable for heavy-duty lifting operations requiring multiple lifting points and balanced load distribution.

Key Features

• Quad-leg chain sling configuration for improved load stability and balanced load distribution.
• Top assembly: Quad oblong master link assembly.
• Bottom fittings: Grade 80 forged hooks (compatible with Grade 80 lifting systems).
• Manufactured from quenched and tempered Grade 80 alloy steel chain and components.
• Each sling supplied with written certification and full traceability (individual serial number and identification tag).

Product Configuration Code

• Q = Quad Leg
• O = Quad Oblong Master Link Assembly
• F = Forged Hook

Product Identification

• Individual Serial Number on identification tag
• Chain Size
• Chain Grade
• Exact Sling Length
• Working Load Limit (WLL)

Typical Applications

• Heavy machinery handling
• Structural steel lifting
• Precast concrete installation
• Equipment installation
• Mining maintenance
• Industrial material handling

Standards, Packaging & MOQ

• Name: Grade 80 QOF Chain Sling – Quad Leg w/ Quad Oblong Master Link on Top and Forged Hooks on Bottom
• MOQ: 100 Sets
• Package: Carton + Steel Pallet
• Manufacturing Standards: Manufactured in accordance with EN 818-2, EN 1677-1, EN 1677-2, EN 1677-4, ASME B30.9, OSHA 1910.184, AS 2321, ISO 3077.
• Testing Standards: Minimum design factor 4:1. Each sling is proof tested, visually inspected, dimensionally verified, and checked for component compatibility. Chain complies with EN 818 fatigue requirements and withstands 20,000 cycles at 1.5× WLL. Supplied with serial number, identification tag, and written certification.
• Application Standards: Suitable for overhead lifting, multi-point lifting, heavy machinery handling, structural steel erection, precast concrete installation, equipment installation, mining maintenance, and industrial material handling.
• Maintenance: Inspect before each use for chain elongation, wear, cracks, corrosion, forged hook deformation, damaged master links or connecting links, and missing identification tags. Remove from service if defects exceed inspection criteria.

Parameter — Meter table (Working Load Limit in metric tons)
Header: Diameter (mm) | 1 Leg (ton) | 2 Legs (0°4 | 0.5 | 0.71 | 0.5 | 1.06 | 0.75 | 0.8
5 | 0.8 | 1.12 | 0.8 | 1.6 | 1.18 | 1.24
6 | 1.12 | 1.6 | 1.12 | 2.36 | 1.7 | 1.8
7 | 1.5 | 2.12 | 1.5 | 3.15 | 2.24 | 2.5
8 | 2 | 2.8 | 2 | 4.25 | 3 | 3.15
10 | 3.15 | 4.25 | 3.15 | 6.7 | 4.75 | 5
13 | 5.3 | 7.5 | 5.3 | 11.2 | 8 | 8.5
16 | 8 | 11.2 | 8 | 17 | 11.8 | 12.5
18 | 10 | 14 | 10 | 21 | 15 | 16
19 | 11.2 | 16 | 11.2 | 23.5 | 16.8 | 17.9
20 | 12.5 | 17 | 12.5 | 26.2 | 18.7 | 20
22 | 15 | 21.2 | 15 | 31.5 | 22.5 | 24
26 | 21.2 | 30 | 21.2 | 44.5 | 31.8 | 33.9
28 | 25 | 33.5 | 25 | 52.5 | 37.5 | 40
30 | 28 | 39.2 | 28 | 58.8 | 42 | 44.8
32 | 31.5 | 45 | 31.5 | 66.1 | 47.2 | 50.4
36 | 40 | 56 | 40 | 84 | 60 | 64
38 | 45 | 63 | 45 | 94.5 | 67.5 | 72
40 | 50 | 70 | 50 | 105 | 75 | 80
45 | 63 | 88.2 | 63 | 132.3 | 94.5 | 100.8
50 | 78.5 | 109.9 | 78.5 | 164.8 | 117.7 | 125.6

Parameter — Feet table (Working Load Limit in lbs, Design Factor 4:1)
Header: Chain Diameter (in) | 1-Leg Sling (lbs) | 2-Leg Sling (60°) (lbs) | 2-Leg Sling (45°) (lbs) | 2-Leg Sling (30°) (lbs) | 3 & 4-Leg Slings (60°) (lbs) | 3 & 4-Leg Slings (45°) (lbs) | 3 & 4-Leg Slings (30°) (lbs)
7/32" | 2,100 | 3,600 | 3,000 | 2,100 | 5,500 | 4,400 | 3,200
9/32" | 3,500 | 6,100 | 4,900 | 3,500 | 9,100 | 7,400 | 5,200
5/16" | 4,500 | 7,800 | 6,400 | 4,500 | 11,700 | 9,500 | 6,800
3/8" | 7,100 | 12,300 | 10,000 | 7,100 | 18,400 | 15,100 | 10,600
1/2" | 12,000 | 20,800 | 17,000 | 12,000 | 31,200 | 25,500 | 18,000
5/8" | 18,100 | 31,300 | 25,600 | 18,100 | 47,000 | 38,400 | 27,100
3/4" | 28,300 | 49,000 | 40,000 | 28,300 | 73,500 | 60,000 | 42,400
7/8" | 34,200 | 59,200 | 48,400 | 34,200 | 88,900 | 72,500 | 51,300
1" | 47,700 | 82,600 | 67,400 | 47,700 | 123,900 | 101,200 | 71,500
1-1/4" | 72,300 | 125,200 | 102,200 | 72,300 | 187,800 | 153,400 | 108,500

Notes

• All values in meter table are expressed in metric tons and represent maximum Working Load Limit (WLL).
• Angle definitions: a = angle between sling leg and vertical. 0° < a < 45° and 45° < a < 60° ranges are used to determine load factors and adjusted WLLs.
• Continuous Sling refers to an endless chain sling configuration WLL.

Caractéristiques / spécifications techniques

• Nom produit: Grade 80 QOF Chain Sling
• Modèle / Dénomination commerciale: Grade 80 QOF Chain Sling
• Marque: TOPONE CHAIN
• Matériau: Grade 80 quenched and tempered alloy steel (chain and components)
• Top fitting: Quad Oblong Master Link Assembly
• Bottom fitting: Grade 80 forged hooks
• Identification: Individual serial number, identification tag, chain size, chain grade, exact sling length, WLL
• MOQ: 100 Sets
• Emballage: Carton + Steel Pallet
• Normes de fabrication: EN 818-2; EN 1677-1; EN 1677-2; EN 1677-4; ASME B30.9; OSHA 1910.184; AS 2321; ISO 3077
• Essais: Minimum design factor 4:1; proof tested; visual inspection; dimensional verification; fatigue test: 20,000 cycles at 1.5× WLL
• Applications: Overhead lifting, multi-point lifting, heavy machinery handling, structural steel erection, precast concrete installation, equipment installation, mining maintenance, industrial material handling
• Maintenance & Inspection: Inspect before each use for elongation, wear, cracks, corrosion, deformation, damaged links, and missing tags; remove from service if defects exceed criteria