Chaînes de levage et crochets

Core Product Range

Alloy Steel Lifting Chains

• Grades: Manufactured to G80 (Grade 8) and G100 (Grade 10) alloy steel standards, providing superior strength-to-weight ratios and exceptional durability.

• Types: Available in various configurations including:

  • Single Leg Chains
  • Double Leg (2-Leg) Chains
  • Triple Leg (3-Leg) Chains
  • Quad Leg (4-Leg) Chains
  • Endless Loops
  • Custom Lengths & Assemblages

• Features: Precision welded links, uniform heat treatment ensuring consistent strength, smooth surface finish to minimize wear on sheaves and blocks, clear grade markings for traceability.

Lifting Hooks & Assemblages

• Types de crochets: Wide selection including:

  • Crochets de la chape (Shackle Hooks): For direct sling or shackle connection.
  • Crochets pour les yeux: For connection via a pin or shackle.
  • Self-Locking Hooks: Featuring robust safety latches to prevent accidental disengagement.
  • Non-Locking Hooks: For controlled environments.
  • Foundry Hooks: Heat-resistant hooks for demanding environments.
  • Specialty Hooks: Designed for specific applications (Par exemple, grab hooks, sorting hooks).

• Master Links & Couplings: Essential components for connecting multiple legs of chain slings or attaching hooks to machinery.

• Shackles: Available in anchor, chain, and D-shackle types (though often categorized separately, frequently paired with chains and hooks).

Technical Parameters Summary Table

Component	Key Parameter	Gamme typique / Spécification	Standard Reference
Chain (G80)	Diamètre (d)	6mm – 26mm (Custom available)	ISO 4778, DANS 818-4
	Wll	0.25t – 25t+ (Depends on d)
	Min. Break Load (MBL)	4 x WLL
	Proof Load	2 x WLL
	Matériel	Acier en alliage (Par exemple, 20Mn2, 23MnCrMo5-2)
Chain (G100)	Diamètre (d)	6mm – 26mm (Custom available)	ISO 4778, DANS 818-4
	Wll	Higher than G80 for same d (Par exemple, 10mm ~4.0t)
	Min. Break Load (MBL)	5 x WLL
	Proof Load	2 x WLL
	Matériel	Higher Grade Alloy Steel
Crochets (Gr 8)	WLL Range	0.25t – 50t+	ISO 7592, DANS 1677-1
	Min. Break Load (MBL)	5 x WLL
	Proof Load	2 x WLL
	Min. Yield Strength	640 N/mm²
	Ouverture de la gorge (S)	Controlled per WLL & Taper
	Matériel	Acier en alliage forgé (Par exemple, 34CRMO4, 30CrNiMo8)
All	Traceability Marking	Wll, Grade, Manufacturer ID, Batch/Serial	All Standards
	Protection contre la corrosion (Opt.)	Galvanisation à chaud (Hdg) à Iso 1461

Core Product Range & Spécifications techniques

Alloy Steel Lifting Chains (G80 / Grade 8 & G100 / Grade 10)

• Chain Grades: G80 (Minimum Break Load = 800 N/mm²), G100 (Minimum Break Load = 1000 N/mm²)

• Chain Diameters (d): Typically ranging from 6mm (1/4") to 26mm (1") (Custom diameters available).

• Limite de chargement de travail (Wll): Directly proportional to chain diameter and grade. Example ranges:

  • 6mm G80 Chain: Approx. Wll 1.0 tonne
  • 10mm G80 Chain: Approx. Wll 3.2 tonnes
  • 13mm G80 Chain: Approx. Wll 5.3 tonnes
  • 16mm G80 Chain: Approx. Wll 8.0 tonnes
  • 10mm G100 Chain: Approx. Wll 4.0 tonnes
  • (WLLs are rigorously tested and marked on each chain; always refer to markings)

• Proof Test Load: Typically 2x WLL (Per ISO 4778 / DANS 818-4).

• Break Test Load: Minimum 4x WLL for G80, 5x WLL for G100 (Destructive testing on samples).

• Elongation at Break: ≤ 15% (Measured over 3 links).

• Tolerance: Link dimensions manufactured to tight tolerances as per ISO 4778.

• Surface: Smooth finish, optionally galvanized (Min. average coating weight: 610 g/m² for Grade A) or painted for corrosion protection.

Lifting Hooks & Assemblages

• Hook Grades: Manufactured to Grade 4, 5, 6, 8 (Equivalent to ISO 7592 / DANS 1677-1). Grade 8 (Most Common, Min. Yield Strength = 640 N/mm²) is standard for heavy-duty use.

• Limite de chargement de travail (Wll): Ranges from 0.25 tonnes to 50+ tonnes, depending on hook type, size, and design.

• Proof Test Load: Typically 2x WLL.

• Break Test Load: Minimum 3x WLL for Grade 4, 4x WLL for Grade 5, 5x WLL for Grade 6/8.

• Ouverture de la gorge de crochet (S): Precisely controlled according to WLL and standard dimensions (Par exemple, DANS 1677-1).

• Shank Diameter/Width: Sized according to WLL and connection type (Par exemple, eye diameter, clevis pin hole).

• Latch Types: Forged safety latches on self-locking hooks, designed to withstand impact and prevent accidental release. Latch engagement tested.

• Matériel: Acier en alliage à haute tension (Par exemple, 34CRMO4, 30CrNiMo8), forged and heat-treated.

• Surface: Shot blasted, optionally galvanized or painted.

Caractéristiques clés & Benefits of Weihua Lifting Chains and Hooks

• Force sans compromis & Durabilité: Forged or fabricated from high-grade alloy steel, rigorously heat-treated to achieve specified tensile strengths (G80/G100). Resistant to deformation, abrasion, et fatigue.

• Sécurité améliorée: Designed and manufactured in strict compliance with international safety standards (ISO 4778, ISO 7592, ASME B30.9, DANS 818-4, etc.). Critical for protecting personnel and loads.

• Precision Manufacturing: State-of-the-art production processes ensure consistent link dimensions, smooth surfaces, and reliable weld integrity. This minimizes internal stress points and wear.

• Rigorous Quality Control: Every batch undergoes stringent testing, y compris:

  • Proof Load Testing
  • Break Load Testing (destructive on samples)
  • Dimensional Checks
  • Inspection visuelle
  • Tests non destructeurs (NDT) comme l'inspection des particules magnétiques (MPI) as required.

• Traçabilité: Each chain and hook is clearly marked with its Working Load Limit (Wll), grade (Par exemple, G80), manufacturer ID (Weihha), and often a unique serial/batch number for full traceability.

• Versatilité: Suitable for a vast array of applications across industries, from general manufacturing and warehousing to construction, mining, shipbuilding, and heavy machinery.

• Personnalisation: Weihua can provide custom chain lengths, specific hook configurations, and unique assemblies to meet specialized lifting requirements.

• Résistance à la corrosion: Standard finish protects against general environments. Optional galvanization or specialized coatings available for harsh/corrosive conditions.

Lifting Chains And Hooks Applications

Weihua lifting chains and hooks are integral components in:

• Overhead Crane Systems (Crochet et bloc)
• Chain Hoists (Manuel & Electric)
• Lever Hoists (Come-alongs)
• Chain Slings (Assembly Kits)
• Rigging Applications
• Material Handling Equipment Integration
• Chantiers de construction
• Mining Operations
• Manufacturing Assembly Lines
• Chantiers navals & Docks

Certifications & Conformité

Weihua lifting chains and hooks are manufactured to meet or exceed:

• ISO 4778 (Specification for short link chain for lifting purposes)
• ISO 7592 (Forged steel lifting hooks – Grade 4, 5, 6, 8)
• ASME B30.9 (Slings) / B30.10 (Crochets)
• DANS 818-4 (Short link chain for lifting – Grade 8)
• DANS 1677-1 (Components for slings – Safety – Part 1: Forged steel components, Grade 8)
• CE Marking (le cas échéant)
• Other national and regional standards upon request.

Why Choose Weihua Lifting Chains and Hooks?

• Global Reputation: Backed by Weihua’s decades of experience and leadership in lifting equipment.

• Fiabilité prouvée: Confiance par les industries du monde entier pour des opérations de levage critiques.

• Sécurité d'abord: Engineered and tested to the highest safety standards.

• Assurance qualité: Robust manufacturing and quality control processes guarantee performance.

• Comprehensive Range: One-stop solution for diverse chain and hook requirements.

• Support technique: Expert guidance available for selection and application.

Weihua’s lifting chains and hooks represent the pinnacle of strength, fiabilité, and safety in load connection technology. Whether you need standard components or custom-engineered solutions, Weihua provides the dependable link you can trust for efficient and secure lifting operations. Invest in Weihua quality for peace of mind and optimal performance.