从China供应商批发进口A691 1.25cr Lsaw/Dsaw Pipe — FOB条款

A691 1.25Cr LSAW/DSAW pipe is an chromium-molybdenum alloy steel pipe manufactured to ASTM A691 for electric-fusion-welded carbon and alloy steel pipe intended for high-temperature and high-pressure service. Hebei Tirico Pipeline Co., Ltd. supplies this grade with a size range from 1/2 inch NB to 24 inch NB, with wall thicknesses spanning SCH20 through XXS. The 1.25Cr designation indicates 1.25% chromium content, providing enhanced oxidation resistance and creep strength above standard carbon grades. The supplier's source material confirms plain end, beveled end, and threaded end finishes, with standard 6 metre lengths or cut-to-order upon request.

The pipe is produced from pressure vessel quality steel plate with filler metal added during fusion welding, with post-weld heat treatment applied as needed to meet the specified mechanical properties. ASTM A691 Grade 1.25Cr requires specific chemistry limits and tensile properties that differ from lower alloy grades such as CM-65 or CM-75. The electric-fusion-welded construction, either longitudinal submerged arc welding (LSAW) or double submerged arc welding (DSAW), yields a robust seam with full penetration and consistent quality. Typical applications demand this pipe withstand sustained metal temperatures up to approximately 510°C in refinery, petrochemical, and power generation service.

Buyers sourcing this product for boiler tubing, heat exchanger shells, or process piping should confirm the specific CM-75 or CM-65 strength grade required, as A691 encompasses multiple classes within each grade. Hebei Tirico Pipeline Co., Ltd. is located in Cangzhou, Hebei Province, a region with established steel pipe manufacturing infrastructure. Importers should verify the exact grade classification, heat treatment condition, and any supplementary NDE requirements before finalising an order, as these significantly affect pressure rating and code compliance.

Hebei Tirico Pipeline Co., Ltd. operates from Wuliyao Industrial Park in Yanshan County, Cangzhou, within Hebei Province, China's most concentrated region for carbon and alloy steel pipe production. The supplier holds a Harbor trust tier on the platform, though both response rate and average response hours are recorded at zero, indicating no verified transaction history or communication data is currently available. Buyers should treat this as a profile with unproven responsiveness and conduct direct due diligence before committing to orders.

The listing provides no disclosed certifications, no stated factory size, workforce figures, or annual output capacity. The supplier's product focus is alloy steel pipe for high-pressure, high-temperature applications, with this A691 1.25Cr grade representing a specific niche within their catalogue. Importers are advised to request ASTM A691 mill test certificates, verify the welding procedure specification (WPS), and confirm the supplier's quality system credentials directly, as none are pre-verified on the profile.