GB/T3639 10 20 16mn 35 45 30CrMo 42CrMo Seamless Steel Tube

GB/T3639 10 20 16mn 35 45 30CrMo 42CrMo Seamless Steel Tube. High Precision Seamless Tube: Cold drawn seamless steel tubes with high precision for automotive and hydraulic applications. Wide Material Range: Available in 10, 20, 16mn, 35, 45, 30CrMo, 42CrMo and other customized steel grades. Multiple Surface Treatments: Options include Bright, Black Phosphated, Galvanizing (Silver, Yellow, Olive green) with 8-20um thickness. Strict Quality Control: Double inspected by professional quality controllers with vivid test reports for all delivered products. Convenient Logistics: Located in Zhangjiagang with access to Shanghai port, ensuring convenient water and land transportation. OEM Service Available: OEM service is available for customized requirements and special steel grades upon request. Certified Standards: Products comply with DIN 2391, EN10305, BS 6323, ISO 8535, and hold ISO 9001/Ts16949 certificates. Versatile Applications: Suitable for fuel injection lines, hydraulic cylinders, CNG tubes, and various automotive components.