Chain sling Grade 100 QOO

4-pointsteel alloy

Introduction
Grade 100 QOO Chain Sling is a quad‑leg lifting assembly manufactured from quenched and tempered Grade 100 alloy steel chain and components. The sling features a quad oblong master link assembly at the top and four oblong master links at the bottom, delivering multiple connection points and maximum configuration flexibility for heavy‑duty lifting operations. Compared with Grade 80 slings, Grade 100 provides approximately 25% higher Working Load Limit (WLL) for the same chain size. Each sling is permanently identified with a serial number, chain size, grade, exact sling length, and WLL to ensure full product traceability.

Key Benefits

• Quad‑leg configuration distributes load forces across four legs for improved stability when handling oversized or irregular loads.
• Top quad oblong master link assembly and four bottom oblong master links enable flexible connections to shackles, lifting eyes, spreader beams and custom fixtures.
• Manufactured from quenched and tempered Grade 100 alloy steel, offering ~25% higher WLL versus Grade 80 for equivalent chain sizes.
• Permanently marked with serial number and identification tag for complete traceability and certification handling.

Product Configuration Code

• Q = Quad Leg
• O = Quad Oblong Master Link Assembly (top)
• O = Four Oblong Master Links (bottom)
• QOO denotes a quad‑leg chain sling fitted with a quad oblong master link assembly on the top and four oblong master links on the bottom.

Product Identification

• Individual serial number (one per sling)
• Chain size
• Chain grade (Grade 100)
• Exact sling length
• Working Load Limit (WLL)

Typical Applications

• Heavy machinery handling
• Structural steel lifting and erection
• Offshore module installation and offshore lifting operations
• Precast concrete installation
• Spreader beam systems and multi‑point lifting
• Industrial material handling

Standards & Testing
Manufactured from quenched and tempered Grade 100 alloy steel chain and components in accordance with EN 818‑2, EN 1677‑1, EN 1677‑4, ASME B30.9, OSHA 1910.184, AS 2321 and ISO 3077 requirements for Grade 100 lifting chain assemblies. Each sling is designed with a minimum design factor of 4:1. Slings are proof tested, visually inspected, dimensionally verified and checked for component compatibility before shipment. The chain is stated to meet EN 818 fatigue requirements and to withstand 20,000 load cycles at 1.5×WLL. Every sling is supplied with an individual serial number, identification tag, written certification and complete traceability records.

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

Parameter — Meter table
Item NO. | Diameter of Lifting Chain | 1 Leg (ton) | 2 Legs (0°<α<45°) (ton) | 2 Legs (45°<α<60°) (ton) | 3 & 4 Legs (0°<α<45°) (ton) | 3 & 4 Legs (45°<α<60°) (ton) | Continuous Sling (ton)
Example rows:
TPL81841004, 4, 0.63, 0.88, 0.63, 1.32, 0.94, 1
TPL81841005, 5, 1, 1.4, 1, 2.1, 1.5, 1
TPL81841006, 6, 1.4, 1.96, 1.4, 2.94, 2.1, 2
... (table continues with Item Nos. through TPL818410050 with corresponding WLL values for each configuration)

Parameter — Feet table (representative)
Item No. | Diameter of Lifting Chain (in.) | 1 Leg (90°) (lbs) | 2 Legs Factor 1.4 (lbs) | 3 & 4 Legs (lbs) | Continuous Sling (lbs)
Example rows:
TPL81841004, 5/32", 2,205, 2,205, 2,205, 2,205, 2,205
TPL81841005, 3/16", 2,205, 2,205, 2,205, 4,409, 4,409
TPL81841006, 1/4", 2,205, 4,409, 2,205, 6,614, 4,409
... (table continues with imperial‑size rows showing WLLs in lbs for each configuration)

Packaging & MOQ
MOQ: 100 Sets. Package: Carton + Steel Pallet.

Characteristics / Technical Specifications

• Product name: Grade 100 QOO Chain Sling — Quad‑leg oblong master link top and four oblong master links bottom
• Model / Configuration: QOO (quad leg with quad oblong master link top and four oblong master links bottom)
• Material: Quenched and tempered Grade 100 alloy steel (chain and components)
• Design factor: Minimum 4:1
• Working Load Limit (WLL): Values depend on chain size and sling configuration; Grade 100 provides ~25% higher WLL vs Grade 80 for same chain size
• Identification: Each sling permanently identified with serial number, chain size, grade, exact sling length and WLL; supplied with written certification and traceability records
• Standards: EN 818‑2, EN 1677‑1, EN 1677‑4, ASME B30.9, OSHA 1910.184, AS 2321, ISO 3077
• Testing: Proof tested, visually inspected, dimensionally verified; chain tested to 20,000 cycles at 1.5×WLL (stated)
• Typical applications: heavy machinery handling, structural steel lifting, offshore installation, precast concrete, spreader beam/multi‑point lifting
• MOQ: 100 Sets; Packaging: Carton + Steel Pallet