Chain sling 100 DOF

2-pointsteelalloy

Introduction
Grade 100 DOF Chain Sling is a double-leg lifting assembly manufactured from quenched and tempered Grade 100 alloy steel chain and components. The sling is equipped with a Grade 100 oblong master link on the top and two Grade 100 foundry hooks on the bottom, suitable for heavy-duty lifting applications requiring large hook openings and balanced two-point load distribution.

Key Benefits

• Approximately 25% higher Working Load Limit compared with Grade 80 for the same chain size
• Maintains a 4:1 design factor
• Foundry hooks feature a wide throat opening for connecting to large lifting lugs, castings, steel fabrications, and oversized attachment points
• Double-leg configuration improves load stability and distributes lifting forces evenly between two lifting points

Product Configuration Code

• D = Double Leg
• O = Oblong Master Link
• F = Foundry Hook

Product Identification

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

Manufacturing Standards
Manufactured from quenched and tempered Grade 100 alloy steel chain and components in accordance with EN 818-2, EN 1677-1, EN 1677-2, EN 1677-4, ASME B30.9, OSHA 1910.184, AS 2321, and ISO 3077 requirements for Grade 100 lifting chain sling assemblies.

Testing Standards
Manufactured with a minimum design factor of 4:1. Each sling is proof tested, visually inspected, dimensionally verified, and checked for component compatibility before shipment. The chain complies with EN 818 fatigue requirements and withstands 20,000 load cycles at 1.5 times the Working Load Limit (WLL). Every sling is supplied with an individual serial number, identification tag, written certification, and complete traceability records.

Application Standards
Suitable for overhead lifting, two-point lifting, heavy machinery handling, structural steel erection, foundry operations, precast concrete installation, equipment installation, and industrial material handling operations.

Maintenance Standards
Inspect before each use for chain elongation, excessive wear, cracks, corrosion, deformation of foundry hooks, damaged master links, connecting links, and missing identification tags. Remove the sling from service immediately if defects exceed the applicable inspection criteria.

Parameters (table)
Design Factor | 4:1
Dim | 1-Leg (90°) Load Factor:1 | 2-Leg (60°) Load Factor:1.7 | 2-Leg (45°) Load Factor:1.4 | 2-Leg (30°) Load Factor:1 | 3&4-Leg (60°) Load Factor:2.6 | 3&4-Leg (45°) Load Factor:2.1 | 3&4-Leg (30°) Load Factor:1.45
7/32" | 2,700 | 4,700 | 3,800 | 2,700 | 7,000 | 5,700 | 4,000
9/32" | 4,300 | 7,400 | 6,100 | 4,300 | 11,200 | 9,100 | 6,400
5/16" | 5,700 | 9,900 | 8,100 | 5,700 | 14,800 | 12,100 | 8,500
3/8" | 8,800 | 15,200 | 12,400 | 8,800 | 22,900 | 18,700 | 13,200
1/2" | 15,000 | 26,000 | 21,200 | 15,000 | 39,000 | 31,800 | 22,500
5/8" | 22,600 | 39,100 | 32,000 | 22,600 | 58,700 | 47,900 | 33,900
3/4" | 35,300 | 61,100 | 49,900 | 35,300 | 91,700 | 74,900 | 53,000
7/8" | 42,700 | 74,000 | 60,400 | 42,700 | 110,900 | 90,600 | 64,000
1" | 59,700 | 103,400 | 84,400 | 59,700 | 155,100 | 126,600 | 89,550
1-1/4" | 90,400 | 156,600 | 127,800 | 90,400 | 234,900 | 191,800 | 135,600

Features / technical specifications

• Name: Grade 100 DOF Chain Sling
• Configuration: Double leg with oblong master link on top and two foundry hooks on bottom
• Material: Quenched and tempered Grade 100 alloy steel chain and components
• Design factor: 4:1
• Testing: Proof tested, visually inspected, dimensionally verified; complies with EN 818 fatigue requirements (20,000 cycles at 1.5× WLL)
• Identification: Individual serial number, identification tag, written certification, traceability records
• MOQ: 100 Sets
• Package: Carton + Steel Pallet
• Applications: Overhead lifting, two-point lifting, heavy machinery handling, structural steel erection, foundry operations, precast concrete installation, equipment installation, industrial material handling
• Maintenance: Inspect before each use for elongation, wear, cracks, corrosion, deformation or damaged components; remove from service if defects exceed criteria