
Industrial Carbon Steel Sewer System Durable Spiral Welded Steel Pipe. Customized Dimensions: Diameter 8-80 inches, Wall Thickness 6-16mm, Length fully customized. High Production Capacity: Annual capacity exceeds 10 million tons across four production bases. Strict Quality Control: Full inspection from raw materials to final hydrostatic and non-destructive testing. Flexible MOQ Options: 10 tons for standard specs, 20 tons for custom, negotiable for trial orders. Fast Sample Delivery: Free samples available with 3-5 working days lead time. Global Shipping Network: Ships from Tianjin, Jingtang, Qingdao with door-to-door delivery options. Technical Support Services: Engineering team provides consultation, installation guidelines, and CAD drawings.