Steel Pipe, Cold Drawn Precision Seamless Steel Pipe, Precision Seamless Steel Tubes manufacturer / supplier in China, offering DIN 2391 Precision Seamless Steel Tubes for Hydraulic Cylinders 24h Response, ISO 9001 Certified Precision Seamless Steel Tubes Custom Length Seamless Steel Tubes, Annealed Precision Seamless Steel Tubes for Structural Applications Tensile Strength ≥ 450 MPa and so on.