zhejiang dingxin steel tube manufacturing Co.,Ltd

We are a factory in China, professionally manufacture & supply cold-drawn and cold-rolled precision seamless steel tubes. They are widely used in automobile (cylinder sleeve, liner, camshaft, bushing, bearing, & other car parts made from tubes), hydraulic & pneumatic cylinder, hydraulic jack, mechanical machine components, shipbuilding, geological drilling, nuclear station, etc.
Main Standard: DIN 2391, EN 10305-1, ASTM A519, A192, A513-5, A 106, GB/T3639, BS6323, JIS, DIN1629, DIN17175.
Main material: Grade 10, 20, 35, 45, ST35, ST37(E235), ST45(E255), ST52(E355)(16Mn), 1010, 1020, 1026(25Mn), 1035, 1045(S45C), 4130, 4140, C45, C35, 20Cr(20Cr4)(5120), 40Cr(41Cr4)(5140), 30CrMo(4130), 34CrMo4, 35CrMo(4135), 42CrMo(4140), 42CrMo4, 38CrMoAl(38XMIOA), Gr. B, or custom made.
Delivery condition: BK(+C), BKW(+LC), BKS(+SR), GBK(+A), Q&T, NBK(+N).
Size: O.D. 10 to370 mm (0.4 in to14.6 in ), W.T. 1 to32 mm (0.04 in to1.26 in).
Output: 25,000 tons / year.
Certificate: ISO9001... [Details]