38mm*38mm Pre Galvanized Hollow Section ERW Welded Iron Carbon Gi Round Steel Pipes for Construction Material

38mm*38mm Pre Galvanized Hollow Section ERW Welded Iron Carbon Gi Round Steel Pipes for Construction Material. Wide Material Range: Available in Q195, Q235B, St37-2, St52, SS400, ASTM A53, and more. Flexible Surface Treatment: Galvanized with zinc coating options from 40g to 210g per square meter. Customizable Dimensions: Pipe length 3-12m, OD 1/2''-6'', and ends can be plain or threaded. Strict Quality Control: Professional inspection of diameter, thickness, and chemical composition before shipping. Third-Party Inspection Support: Supports SGS, BV, and other third-party inspections for quality assurance. Certified Standards: Meets ASTM A53, GB/T3091, and JIS G 3443 standards with MTC provided. Versatile Applications: Suitable for pipeline transport, boiler pipes, construction, and scaffolding. Reliable Delivery: Stock items ship in 5-7 days; customized items within 30 days.