
Hot Sale E235 E355 St52 Seamless Carbon Steel Tube Cold Drawn Galvanized Carbon Steel Round Tube. Wide Size Range: OD: 3mm-90mm, Wall thickness: 0.5mm-8mm, Tolerance: +/-0.1mm. Multiple Material Grades: Available in E355, E235, 10#, 20#, Q355B, and other carbon steel grades. Various Delivery States: Options include BK, BKW, NBK, GBK, BKS, and Quenched & Tempered (QT). Flexible Customization: Supports OEM/ODM, full customization, and small quantity orders. Strict Quality Control: 20 QA/QC inspectors with random visual and function inspections. Established Manufacturer: Factory established in 2007 with 167 employees and 8000+ tons annual output. Multi-Industry Application: Suitable for hydraulic systems, automotive, machinery, and construction. Competitive Pricing: High-quality tubes offered at competitive prices with flexible payment terms.