Q355GNH plate to GB/T 4171 weathering steel standard

High-strength, atmospheric-corrosion-resistant structural steel plate produced to Chinese standard GB/T 4171-2008. Q355GNH offers enhanced resistance to weathering for outdoor structures and civil engineering applications, reducing the need for frequent painting or maintenance in many environments.

Key attributes

• Conforms to GB/T 4171-2008 (dimension, appearance, permissible deviations, technical requirements, test methods, packing, marking and quality certificate for atmospheric corrosion resisting structural steel)
• Weathering steel grade designed for bolted, riveted and welded structural assemblies
• Delivery condition configurable to project requirements (hot rolled, controlled rolling, normalizing, annealed + tempering, normalizing + tempering, hardening + tempering)

Typical commercial specification

• Width: 1220–4200 mm
• Length: 5000–18000 mm
• Coil thickness: ≤ 25 mm (for coiled product)
• Minimum order quantity (MOQ): 10 pieces
• Packing: standard sea-worthy packing or customer-specified packing
• Shipping ports: Shanghai, Tianjin, Qingdao, or as requested

Applications

• Structural components for bridges, towers and buildings
• Vehicle and container manufacture
• Outdoor architectural elements and exposed structural members where improved atmospheric corrosion resistance is required

Ordering information

For a quote, provide required thickness, width, length, quantity, preferred delivery condition and destination port. Technical test reports and certificates can be supplied per GB/T 4171-2008 requirements on request.