Import A709grade50 Structural Steel Plate — Buy in wholesale FOB from Supplier in China

A709 Grade 50 structural steel plate is a high-strength low-alloy (HSLA) plate specified for bridge and highway construction, with a minimum yield strength of 50 ksi (345 MPa) per ASTM A709. This hot-rolled carbon-manganese steel is produced to withstand tensile loads in critical infrastructure, with typical plate thickness ranging from 6 mm to 100 mm and widths up to 2500 mm depending on mill capability. The grade designation reflects its 50 ksi yield point, placing it in the higher-strength category of structural steels used where weight reduction and load capacity are both priorities.

The plate chemistry typically includes carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, and vanadium in controlled ranges to achieve the specified mechanical properties and atmospheric corrosion resistance. Charpy V-notch impact testing at 0°C or lower temperatures is standard for many thicknesses and applications, particularly in colder climates where brittle fracture resistance matters. Weldability is a defining feature: the carbon equivalent (CE) is typically kept below 0.45% to ensure good fusion and minimise hydrogen-induced cracking, though buyers should request the mill test certificate for the actual CE value. Surface condition is normally as-rolled or shot-blasted, with mill scale intact unless surface preparation is specified.

Primary buyers include bridge fabricators, heavy engineering contractors, shipyards, and steel service centres serving infrastructure projects across Asia, Africa, and the Middle East. The plate is supplied in standard mill lengths or cut-to-size, with typical packaging as bare bundles or wrapped with steel straps for ocean freight. Incoterms and payment structures vary by order volume; CIF and FOB are common for export shipments. Buyers should confirm lead time, minimum order quantity, and whether third-party inspection (SGS, BV) is included or arranged separately.

Henan HZZ Iron and Steel Co., Ltd. is headquartered at Jincheng International Building 6 in Zhengzhou, Henan Province, central China. The company is classified as an imported-tier supplier with a harbor trust tier. The listing shows a response rate of 0.00% and an average response time of zero hours, which indicates that direct communication data is not currently available or the supplier has not responded through the platform's enquiry system. Buyers should initiate contact directly to assess responsiveness and English-language capability.

The supplier lists A709 Grade 50 structural steel plate among its product offerings, positioning itself within the competitive Chinese structural steel export market centred on Henan Province, a region with established steel production and trading infrastructure. No verified certifications, production capacity figures, or client references are stated in the available profile data. Buyers are advised to request mill test certificates, ISO 9001 or equivalent quality system documentation, and evidence of prior ASTM-compliant shipments before placing trial orders.