Import Astm A106 Gra Grb Grc Seamless Steel Pipe — Buy in Bulk from Supplier in China

Chengdu Heyi Steel Tube supplies ASTM A106 GrA, GrB and GrC seamless steel pipes for high temperature and high pressure service. The pipes are manufactured to ASTM A106 standards, covering nominal sizes from 1/8 inch to 24 inch outside diameter with wall thicknesses ranging from schedule 10 to schedule 160. These seamless pipes are engineered without weld seams, eliminating weak points that can compromise structural integrity in demanding applications such as power generation and petrochemical processing.

The material composition adheres to ASTM A106 specifications, with carbon content capped at 0.30% for GrA, 0.30% for GrB and 0.40% for GrC, alongside controlled manganese and trace element levels to ensure consistent mechanical properties. Standard surface treatments include black painting, varnishing or galvanising for corrosion resistance, while the typical length supplied is 5.8 to 12 meters. The pipes are produced via hot rolling or cold drawing, with typical tolerances of ±0.5% for outer diameter and ±12.5% for wall thickness.

These seamless carbon steel pipes are primarily used in oil and gas pipelines, refinery processing units, boiler systems and heat exchangers where reliability under thermal stress is critical. Importers commonly source these in bulk for infrastructure projects, with packaging typically in hex bundles secured with steel strips. Buyers should confirm incoterms such as FOB or CIF, as well as inspection requirements for dimensional accuracy and hydrostatic testing before shipment.

Chengdu Heyi Steel Tube operates from No.68, Longzhou Road in Chengdu, Sichuan Province, China. The company is classified as an imported tier supplier with a harbor trust tier, indicating it meets baseline verification standards for export readiness. Its address places it in a key industrial hub for steel production and logistics, with access to major transportation routes for bulk shipments.

The supplier’s profile does not list a response rate or average response time, which suggests buyers should proactively confirm availability, technical specifications and lead times directly. No additional certifications, production capacity or client references are provided in the available data, so importers are advised to request third-party inspection reports or mill test certificates for quality assurance.