Import 309 Bright Stainless Steel Round Bar — Buy in wholesale FOB from Supplier in China

309 Bright Stainless Steel Round Bar from Jiangsu Steel Group Co., Ltd. is a chromium-nickel austenitic stainless steel product, UNS S30900, engineered for sustained performance in oxidising environments up to 1093°C. The bright finish denotes a smooth, cold-drawn or cold-rolled surface with tighter dimensional tolerances than black or pickled counterparts. Source data confirms availability across 200, 300, and 400 series grades, with this specific listing centred on 309. Length is offered from 2000 mm to 6000 mm as standard, with custom cut-to-length service available on request.

The 309 grade contains approximately 22-24% chromium and 12-15% nickel by mass, with carbon typically at 0.20% maximum, giving it superior resistance to thermal cycling and scale formation compared to 304 or 316 grades. The bright finish improves surface integrity for applications where contamination or particulate shedding is unacceptable. Standard compliance includes GB, AISI, ASTM, ASME, EN, BS, DIN, and JIS specifications. Surface options extend beyond bright to ordinary industrial finish or other customised treatments. Standard packaging is regular export packing or as specifically required by the buyer.

Typical applications span furnace components, heat treatment fixtures, aircraft exhaust collectors, heat exchanger tubing supports, and chemical processing equipment where intermittent exposure to temperatures above 870°C occurs. The construction and decoration sectors also draw on this material for architectural features in aggressive environments. Buyers should confirm with Jiangsu Steel Group Co., Ltd. the exact MOQ, current lead time, and Incoterms for their destination, as these are not fixed in the source data. Payment terms offered include T/T and L/C.

Jiangsu Steel Group Co., Ltd. is headquartered at 10/f No.257 Siping Road, Shanghai 200080, Hongkou, China, operating from a commercial office location rather than a disclosed production facility. The supplier profile is classified as imported tier with a harbor trust tier. Response rate is recorded at 0.00% with an average response time of 0 hours, indicating no historical response data is available through this channel. The listing presents itself as a trading or export-oriented entity with access to ISO, BV, and SGS verified manufacturing sources.

The supplier offers stainless steel long products across 200, 300, and 400 series grades, suggesting a broad sourcing capability rather than single-grade specialisation. No information is provided about factory ownership, production capacity, year of establishment, employee count, or annual revenue. Buyers should conduct independent verification of the company's manufacturing relationships and quality management systems before committing to volume orders. The address in Shanghai's Hongkou district places the commercial office in a central business area, not a steel-producing region, which is common for export trading companies in China.