从China供应商批量进口304l Steel Pipe

304L steel pipe from Zhengzhou Huitong Pipe Fittings Co., Ltd. is supplied under ASTM A312 TP304L or equivalent JIS SUS304LTP specifications for seamless and welded austenitic service. The source data confirms availability in A/SA312 TP304, TP304L, TP316, TP316L and other grades, with 304L specifically designated for low-carbon welded applications in corrosive environments. Outside diameter ranges from NPS 1/8 inch to NPS 48 inch (10.3 mm to 1219 mm) are typical for A312 pipe, with wall thicknesses specified by Schedule numbers (SCH 5S through SCH 80S for stainless). The supplier notes hexagonal bundling with steel straps and plastic end caps as standard packaging, with custom packing available on request.

The low carbon content of 304L, maximum 0.03%, prevents sensitisation during welding and maintains corrosion resistance in the as-welded condition without post-weld solution annealing. Typical chemical composition includes 18-20% chromium, 8-13% nickel, 2% manganese, 1% silicon, with balance iron. Mechanical properties for annealed seamless pipe conform to tensile strength 515 MPa minimum, yield strength 205 MPa minimum, and elongation 35% minimum in transverse direction. The supplier's material list includes carbon steel, stainless steel and alloy steel grades, indicating broad sourcing capability rather than stainless steel specialisation. Heat treatment condition, typically solution annealed and quenched for austenitic grades, should be confirmed on the mill certificate.

Applications cited by the supplier include natural gas transmission, petroleum refining, chemical processing, electric power generation, water supply engineering, steam heating systems, hydroelectric stations and long-distance pipeline projects. Buyers span EPC contractors, process plant operators, municipal utilities and pipeline construction firms. The supplier states minimum order quantity of 5 metres, delivery time of 10-100 days depending on quantity, payment by letter of credit or telegraphic transfer, and shipment from Tianjin or Shanghai ports under FOB, CFR or CIF terms. Buyers should confirm pipe manufacturing method (seamless or welded), applicable dimensional standard (ASTM A312, A358, A409 or JIS G3459), and whether the 5-metre MOQ applies per diameter, per wall thickness, or per total order value.

Zhengzhou Huitong Pipe Fittings Co., Ltd. is located at No.168, Guoji Road, Jinshui District, Zhengzhou, Henan Province, China. The supplier carries 'imported' tier and 'harbor' trust tier classifications. Response rate is recorded at 0.00% with zero average response hours on platform channels, indicating buyers must rely on direct outreach for communication. The company name references pipe fittings but the source description focuses heavily on pipe material supply across carbon, stainless and alloy steel grades, suggesting either a broader product range than the name indicates or trading activity beyond manufacturing.

No founding date, employee count, factory ownership status, annual revenue, named clients, or specific quality system certifications are provided in the source data. The supplier lists numerous material grades across three categories (carbon steel, stainless steel, alloy steel) with extensive ASTM, API, JIS and DIN cross-references, implying trading or stocking capability rather than proprietary production of all listed grades. Buyers should verify whether the company manufactures pipe directly, sources from specific mills, or operates as a trader, and should request mill test certificates with heat numbers traceable to original manufacturers. The Henan location is inland, so port shipment from Tianjin or Shanghai involves domestic logistics that buyers should understand.