Import 321h Stainless Steel Flat Bar — Buy in wholesale FOB from Supplier in China

321H stainless steel flat bar from Jiangsu Steel Group Co., Ltd. is an austenitic, titanium-stabilised grade supplied in thicknesses from 2 mm to 100 mm and widths from 10 mm to 500 mm, with standard mill lengths of 2 m to 6 m or cut to customer requirements. The 321H designation denotes a higher carbon variant (0.04 % to 0.10 % C) of grade 321, offering improved elevated-temperature creep resistance compared with standard 321, with the titanium addition minimising chromium carbide precipitation during welding and service above 425 degrees Celsius. The source lists JIS, AISI, ASTM, GB and DIN standards, with grades including 304, 304L, 309S, 310S, 316L, 316Ti, 317L, 321, 347H, 409, 409L, 410, 420 and 430 available from this supplier.

Typical material composition for 321H includes 17.0 % to 19.0 % chromium, 9.0 % to 12.0 % nickel, and 5 × (C %) to 0.70 % titanium minimum, with balance iron and controlled sulphur and phosphorus levels. The flat bar receives surface treatment by pickling, bright finishing or black scaling, depending on end-use requirements. Pickling removes surface oxides from hot rolling, bright finish provides a smooth, reflective surface for architectural or hygienic applications, and black finish retains the mill oxide for general fabrication where subsequent machining or welding will occur. Standard tolerances for hot-rolled flat bar typically follow ASTM A484 or EN 10058, with closer tolerances available on cold-finished sections.

Construction, shipbuilding, petrochemical, power generation, food processing, medical equipment, boiler heat exchanger and general machinery sectors all consume 321H flat bar. The grade's resistance to intergranular corrosion after welding makes it suitable for pressure vessels, exhaust manifolds and chemical processing equipment operating intermittently at temperatures up to 870 degrees Celsius. Buyers should confirm with Jiangsu Steel Group Co., Ltd. the specific dimensional tolerance class, surface finish required, and whether third-party inspection or mill test certificates to EN 10204 3.1 are included. The supplier notes packaging in bundles with seaworthy wooden pallets, and trade terms offered are FOB or CIF from Chinese ports with delivery 5 to 30 days after prepayment confirmation.

Jiangsu Steel Group Co., Ltd. maintains its registered address at 10/F, No. 257 Siping Road, Shanghai 200080, Hongkou District, China, placing its administrative functions in China's primary steel trading hub while manufacturing likely occurs in Jiangsu Province. The supplier tier is marked as 'imported' with trust tier 'harbor', indicating the profile was imported into the marketplace with basic harbour-level verification rather than enhanced due diligence. The response rate is 0.00 % with zero average response hours recorded, which means no response data is available and buyers should treat direct communication as untested.

The listing provides product range breadth across multiple stainless grades but does not disclose production capacity, annual turnover, employee count, export markets served, or named clientele. ISO9001 certification is claimed, though buyers should request the certificate number and scope, and verify validity through the issuing body. The address in Shanghai rather than a mill location suggests trading or group headquarters functions; buyers requiring mill-direct sourcing with full traceability should confirm whether the supplying mill is Jiangsu Steel Group-owned or whether the company operates as trader and manufacturer. No minimum order quantities, exact pricing, or detailed lead time breakdowns by grade and dimension are stated, so these must be negotiated directly.