Import 304n Polished Stainless Steel Bar — Buy in wholesale FOB from Supplier in China

304N polished stainless steel bar is a nitrogen-alloyed austenitic grade that delivers markedly higher tensile and yield strength than standard 304, making it suitable for structural and pressure-bearing applications where mechanical integrity is critical. Jiangsu Steel Group Co., Ltd. lists this material as AISI 304N / SUS 304N, with outer diameters spanning 1.0 mm to 400 mm and standard mill lengths of 3000 mm or 6000 mm, though cut-to-size configurations are available on request. The nitrogen addition, typically 0.10 to 0.16 percent by weight (standard for the grade), stabilises the austenitic structure against sensitisation while maintaining the corrosion resistance expected of the 300-series family.

The polished surface finish is achieved through mechanical polishing or bright annealing, yielding a smooth, reflective surface that reduces adhesion and simplifies cleaning. This finish is distinct from the mill-scale black, pickled, or cold-drawn bright conditions also offered by the supplier. Bar forms include round, square, flat, hexagon, angle, channel, and threaded profiles, each produced via hot rolling, forging, cold drawing, or peeling depending on dimensional tolerance requirements. For precision work, cold-drawn bright bars in the 1 mm to 20 mm range carry tighter dimensional control than hot-rolled black bar stock.

Industries sourcing this grade span petroleum and chemical processing, marine construction, medical device manufacturing, food-processing equipment, and architectural metalwork. The combination of elevated strength and polish finish makes it particularly valued in shafting, pump components, valve stems, and ornamental fixtures. Buyers should confirm with Jiangsu Steel Group Co., Ltd. the exact nitrogen content, hardness in HB or HRB, and whether mechanical test certificates and third-party inspection are included with shipment.

Jiangsu Steel Group Co., Ltd. maintains a registered office at 10/F, No. 257 Siping Road, Shanghai 200080, Hongkou, China, with its manufacturing base located in Jiangsu Province. The supplier holds ISO9001 certification according to the listing, and offers product certification aligned to GB, AISI/JIS, SUS, UNS, and DIN standards. The company is classified as an imported-tier supplier with a harbour trust tier, and the listing indicates that third-party certificates including BV, SGS, and ISO can be arranged for international orders.

The supplier's product range covers austenitic, ferritic, and martensitic stainless steel grades across the 200, 300, and 400 series, with bar products available in round, square, flat, hexagon, angle, channel, and threaded profiles. Response rate data is shown as 0.00 percent with zero average response hours, which buyers should interpret as an absence of recent transaction-verified engagement metrics on this channel rather than an operational assessment. The company emphasises custom-length cutting and surface finish options, positioning itself as a mill-direct or near-mill source for export-oriented stainless steel long products.