Import A36 Q235 Carbon Steel Sheet — Buy in wholesale FOB from Supplier in China

A36 Q235 carbon steel sheet from Jiangsu Steel Group Co., Ltd. is a dual-certified structural hot-rolled plate combining ASTM A36 and Chinese GB Q235B specifications, available in the dimensional envelope of 8-600 mm thickness, 1500-4200 mm width, and 6000-18000 mm length. The Q235 designation covers four sub-grades (A through D) with varying sulfur, phosphorus, and impact requirements; buyers must specify which sub-grade applies to their order. Tensile properties align closely between the two standards, with minimum yield of 235 MPa for Q235B and 250 MPa typical for A36, though actual mill production often targets the higher threshold. Surface treatment is supplied clean, with optional shot blasting to customer specification or primer coating for corrosion-sensitive applications.

The material chemistry for Q235B specifies carbon 0.12-0.20% typical, manganese 0.30-0.70% typical, silicon max 0.30% typical, sulfur max 0.045% typical, and phosphorus max 0.045% typical, with controlled nitrogen and residual elements per GB/T 700. ASTM A36 permits slightly broader chemistry windows, particularly for manganese, which can reach 1.20% typical. The dual-grade claim implies the supplier sources material meeting both analytical sets, but buyers should demand separate mill certificates for each standard when dual certification is contractually required. Deoxidation practice varies: Q235A is rimmed steel, Q235B is killed or semi-killed, and Q235D requires full killing with aluminium addition for low-temperature toughness.

Engineering procurement offices, bridge fabricators, and pressure equipment manufacturers represent the core demand for this dual-certified grade, as it allows specification flexibility across projects with differing national standards. Common formats include full plates for welded girders, flame-cut profiles for machine bases, and normalized blanks for boiler drums. The supplier lists FOB, CFR, and CIF trade terms with settlement by T/T or L/C at sight. Importers should clarify whether Q235 sub-grade selection affects minimum order quantities or mill rolling schedules, as B-grade and D-grade production may carry longer lead times due to tighter chemistry and testing protocols.

Jiangsu Steel Group Co., Ltd. maintains its registered office at 10/f, No.257 Siping Road, Shanghai 200080, Hongkou District, China, classified as an imported-tier vendor with harbor trust status. No response activity is recorded through the platform, with a 0.00% response rate and zero average response hours. The company lists carbon steel coils and sheets across a broad grade matrix including A36, Q235, SS400, and multiple European designations,Tenanting a stockist or trading company model with access to several domestic mill sources.

The supplier profile omits manufacturing certifications, quality system registrations, annual turnover figures, and employee counts. There is no indication of owned rolling mills, slitting lines, or heat treatment facilities. Buyers should independently verify business registration with the Shanghai Municipal Administration for Market Regulation, confirm export operator registration, and request bank reference letters. Given the absence of response data, initial contact through alternative channels (direct email, telephone, or trade fair meeting) may prove more reliable than platform messaging for urgent enquiries.