从China供应商批量进口304l Stainless Steel Pipe

China Valve Industry Co., Ltd. offers 304L stainless steel pipe in Schedule 40 dimensions, specifically 4 1/2 inches nominal diameter and 20 feet standard length, manufactured to ASTM A312. The 304L grade contains maximum 0.03% carbon, providing improved weldability over standard 304 by reducing chromium carbide formation in the heat-affected zone. The pipes feature seamless construction, which eliminates the longitudinal weld seam found in welded pipe and provides more uniform mechanical properties circumferentially.

ASTM A312 is the governing specification for seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. Schedule 40 denotes a specific wall thickness based on the ANSI/ASME B36.10M schedule system, with exact dimensions defined by nominal pipe size. The seamless manufacturing process, typically rotary piercing or extrusion followed by elongation, produces a pipe with no weld seam and consistent wall thickness throughout its length.

These pipes serve oil and gas production, chemical processing plants, power generation facilities, and construction projects requiring pressure containment. The 20-foot length is standard for North American market compatibility, though the supplier notes custom lengths are available on request. Buyers should confirm actual wall thickness for the 4 1/2 inch Schedule 40 specification, verify that the material meets the full ASTM A312 chemical and mechanical requirements, and discuss any additional testing such as hydrostatic or non-destructive examination before order confirmation.

China Valve Industry Co., Ltd. is located at No. 879, Jiahe Road, Xiamen, Fujian Province 361011, China, with an imported supplier tier and harbor trust tier classification. The supplier has a 0.00% response rate and zero average response hours, indicating no tracked communication activity. The company name suggests historical or primary focus on valve products, with stainless steel pipe representing a related or extended product line.

The supplier profile provides no information about establishment year, registered capital, production capacity, number of employees, or quality management system certification. There is no disclosed export experience, major client references, or factory audit information. Buyers should conduct independent due diligence on the company's manufacturing capabilities, verify whether pipe production is in-house or subcontracted, and confirm that ASTM A312 compliance is supported by mill test certificates from an accredited laboratory.