Crochets de levage robustes

Weihua Group, a globally recognized leader in hoisting and lifting solutions, brings decades of specialized engineering expertise to every Heavy Duty Lifting Hook they manufacture. Choosing Weihua means investing in:

• 1. Engineered for Maximum Load & Sécurité: Every Weihua heavy duty lifting hook undergoes rigorous design analysis and testing, far exceeding international standards like ISO 9001, Femelle, and ASME B30.10. They boast exceptional safety factors (typiquement 5:1 ou plus), providing a critical buffer for unexpected stresses.
• 2. Ultra-High Load Capacities: Designed to handle the most challenging lifts, Weihua heavy duty lifting hooks are available in an extensive range of Working Load Limits (Wll), spanning from several tons to several hundred tons. Specific capacities are precisely matched to your application requirements.
• 3. Premium Forged Alloy Steel Construction: Forged under intense pressure from high-grade alloy steel, these hooks possess superior grain structure, maximizing strength, impact resistance, and fatigue life compared to inferior cast or cut hooks. This forging process is fundamental to their heavy-duty performance.
• 4. Advanced Safety Latches (Where Applicable): Many Weihua heavy duty lifting hooks feature robust, spring-loaded or positive locking safety latches. These latches are engineered for secure engagement, preventing slings or load attachments from accidentally dislodging, a vital feature for overhead lifting safety.
• 5. Optimized Hook Geometry: The precise throat opening and tip design ensure easy and secure engagement with shackles, chains, or slings. The smooth, radiused profile minimizes stress concentrations and wear on slings.
• 6. Enhanced Durability & Longevity: Crochet de la grue de Weihua undergo specialized heat treatment processes (quenching and tempering) to achieve the perfect balance of hardness and toughness. High-quality finishes (often electro-galvanized or other corrosion-resistant coatings) protect against rust and abrasion in harsh environments, extending service life significantly.
• 7. Seamless Integration: Weihua heavy duty lifting hooks are designed to integrate flawlessly with Weihua’s own cranes, hoists, and winches, as well as other major brands of lifting equipment. Shank types (chleeur, eye, ramshorn) and sizes are standardized for universal compatibility.

Weihua Heavy Duty Lifting Hooks Technical Parameter Table

Parameter Category	Specifications	Notes/Optional Configurations
Spécifications de base
Working Load Limit (Wll)	1 ton ~ 500 tonnes	Customizable (jusqu'à 1000+ tonnes)
Facteur de sécurité	≥ 5:1	Complies with FEM/ASME (jusqu'à 6:1)
Température de fonctionnement	-40°C to +200°C	Coutume: -196°C or +450°C
Structural Design
Matériel	High-tensile alloy forged steel (35CRMO, 42CRMO, 34Cr2Ni2Mo)	Meets GB/T 3077, DIN EN 10083
Processus de fabrication	Forgeage à die fermée + CNC machining	Grain flow follows hook contour
Type de crochet	– Single Hook (Clevis/Eye Shank) – Ramshorn (Double) Crochet - Crochets de grue pivotant	Bearing type: Tapered/ball roller
Throat Diameter (D)	50mm ~ 1500mm	Customizable per load geometry
Caractéristiques de sécurité
Safety Latch Type	– Spring Latch – Positive Locking Latch – Latchless	Locking force ≥ 10% Wll (mechanical)
Latch Material	Acier en alliage + surface hardening (HRC 40-45)	Impact-resistant design
Traitement de surface
Standard Anti-Corrosion	Electro-galvanized (8-12μm)	Salt spray test > 96 hours
Enhanced Protection	– Hot-dip galvanized (70-100μm) – Xylan®/Dacromet coating	Marine/chemical environments
Certifications
Design Standards	ISO 9001, ASME B30.10, Femelle 9.511, DEPUIS 15401, GB / T 10051
3rd-Party Certification	TÜV, Dnv-gl, Registre de Lloyd, CE	Nuclear (ASME NQA-1), Mining (MSHA)
Testing Methods	- 100% MPI – Ultrasonic Testing (Utah) – Proof Load Test (1.5×WLL)	MTC & test reports available
Mounting Interface
Shank Diameter	20mm ~ 300mm	Tolerance: H7/g6 (DEPUIS 6885)
Pin Type	– Clevis Pin (DEPUIS 688) – Eye Bore (DEPUIS 15403)	Lock nuts/cotter pins standard
Options de personnalisation
Special Features	– Load cell slots – RFID tag grooves – Latch sensor ports	IoT/automation ready
Environnements extrêmes	– Cryogenic (-196° C) – High-temp coating (+650° C) – Explosion-proof (ATEX/IECEx)	Deep cryogenic/heat treatment

Key Parameter Notes

• 1. Wll & Facteur de sécurité

  • Minimum breaking strength = WLL × Safety Factor (Par exemple, 100t hook: 500t breaking load)

  • Dynamic loads require derating (suggested: WLL × 1.2–1.5)

• 2. Swivel Hook Additions

  - Rotation torque: ≤ 2% × WLL × D (D = throat diameter)  
  - Bearing life: 100,000 cycles (ISO 281)

• 3. Corrosion Protection Comparison

Coating Type	Environnement	Service Life (Industrial)
Electro-galvanized	Dry indoor	5–8 years
Hot-dip galvanized	Humid/coastal	15+ années
Xylan® coating	Chemical exposure (pH 3–11)	10 années

Ideal Applications for Weihua Heavy Duty Lifting Hooks

• 1. Overhead Crane Systems (EOT, Gantry, Jib)

• 2. Foundries and Steel Mills

• 3. Heavy Machinery Fabrication & Installation

• 4. Shipbuilding & Dry Dock Operations

• 5. Mining & Mineral Processing

• 6. Power Generation (Turbine, Transformer Lifts)

• 7. Bridge & Major Infrastructure Construction

• 8. Port Terminal Container Handling & Heavy Lift Operations

Why Choose Weihua Heavy Duty Lifting Hooks?

• Sécurité sans compromis: Built to the highest global standards with massive safety margins.

• Fiabilité prouvée: Forged construction and premium materials ensure consistent performance under the most strenuous conditions.

• Superior Durability: Advanced heat treatment and protective finishes maximize hook lifespan, reducing replacement costs and downtime.

• Global Engineering Excellence: Backed by Weihua Group’s extensive R&D, manufacturing prowess, and stringent quality control.

• Comprehensive Support: Worldwide sales and service network providing expert advice, spares, and maintenance support.

When your operations demand absolute certainty under immense loads, trust the engineered strength and unwavering reliability of Weihua heavy duty lifting hooks. They are not just hooks; they are a critical safety component engineered to perform flawlessly, lift after lift.

Contact Weihua or your authorized distributor today to discuss your specific heavy lifting requirements and discover the optimal heavy duty lifting hook solution for your most challenging applications. Visit the Weihua website for detailed catalogs and technical specifications.