Product Overview
Heavy-duty galvanized steel engineered for structural applications demanding maximum corrosion protection. With zinc coatings from G60 to G90 (180-275g/m²), this product delivers 20-30 year service life in challenging environments. The robust coating withstands fabrication processes including welding, bending, and punching while maintaining sacrificial corrosion protection.
Product Description
Produced by Shandong Jinlisheng New Materials, the Hot-Dipped Galvanized Steel Sheet is a multi-scenario material, made from high-quality cold-rolled steel via hot-dip galvanizing and chromating. With a zinc coating weight of 30-120g/m², it offers excellent corrosion resistance and processability.
For building roofs: Its 0.09-1.2mm thickness and 500-1250mm width balance strength and light weight (10-14kg/㎡), resisting rain and atmospheric erosion, and shortening construction cycles by over 40%.
For refrigerator backplanes: Smooth surface (regular/minimal/zero spangle) ensures good fit, with corrosion resistance against moisture inside appliances.
For automobile shells: It has high rigidity, enduring bending and welding, suitable for shaping vehicle outer and inner structural parts.
For chemical containers: It resists mild acids/alkalis, ideal for petroleum containers and chemical raw material barrels, complying with related quality standards.
Specifiction
Heavy zinc coating G60-G90 (180-275g/m²) for extended protection
Structural grade strength for load-bearing applications
Excellent weldability with proper procedures
Superior outdoor corrosion resistance
Full compliance with ASTM A653 and GB/T 2518 standards
Application field
Construction roofing and structural wall systems
Refrigerator and freezer back panels
Automotive body shells and structural components
Chemical storage tanks and containers
Industrial ductwork and ventilation systems
Why Choose Us
Advanced Production Lines: High-speed continuous hot-dip galvanizing equipment.
Strict Quality Control: 100% surface inspection and mechanical property testing.
Global Certification: ISO, ASTM, EN compliance for international markets.
Customization: Zinc coating, thickness, width, and surface treatments tailored to customer needs.
Export Expertise: Long-term supply to over 80 countries with professional logistics support.
FAQ
Q1: What does G60, G90 designation mean?
A: G60 = 0.60 oz/ft² (183g/m²) total both sides. G90 = 0.90 oz/ft² (275g/m²). Higher numbers indicate heavier zinc coating and longer corrosion protection. G90 provides 50% longer service life than G60 in equivalent environments.
Q2: Is this steel suitable for structural load-bearing applications?
A: Yes, available in structural grades S220GD through S350GD with yield strengths from 220 to 350 MPa. Full structural design data and certifications provided. Consult our technical team for specific application engineering.
Q3: How should I weld galvanized steel?
A: Remove zinc coating 25-50mm from weld area. Use adequate ventilation for zinc fumes. Use E7010 or E7018 electrodes for SMAW, or appropriate MIG wire. Post-weld touch-up with zinc-rich paint recommended for corrosion protection.
Q4: Can you supply with mill test certificates?
A: Yes, all structural grades include comprehensive mill test certificates showing chemical composition, mechanical properties, and coating weights. Third-party inspection by SGS, Bureau Veritas available upon request.
Q5: What is the delivery time for construction grades?
A: Standard grades: 15-20 days. Structural grades: 20-30 days. Large project orders can be scheduled for phased delivery. Emergency orders possible with expedited processing surcharge.
DX51D Galvanized steel is a type of steel that has been treated with zinc to enhance its corrosion resistance.
1.Surface structure code / Not just polished
Normal zinc flower N NS Small zinc flower M MS Zinc free flower F FS Zinc ferroalloy ZF ZFS
2.Surface quality code
Ordinary surface FA Advanced surface FC Higher surface FB
3.Surface treatment symbol
Passivation C Unction O Paint sealant L Phosphating P Don't deal with U
Service
Custom Orders: Tailored sizes, thicknesses, and coatings to meet customer needs.
Quality Assurance: Rigorous testing for surface quality and coating thickness to ensure high standards.
Flexible Payment Options: Multiple payment methods like T/T, LC, and PayPal.
Global Delivery: Timely and reliable worldwide delivery for large and small orders.
Packaging: Safe packaging suitable for international shipment.
