Our company is specialized in Cold drawn High precision Seamless pipe.That's used for hydraulic system,Auto system & Engineering machine system. Like: hydraulic cylinder,hydraulic jack,backbone of Automobile and rear axle tube.

1. Main standard:          DIN2391/EN10305-1

2. Steel grade:             ST35,ST37,ST52,      4130,4140

3. Size range:     OD:16~419mm(0.63"~16.5")  WT:1~22mm(0.04"~0.87")    Length: 13.8m (0.54")

4. Delivery Condition:      BK,NBK,BKS.

5. Straightness:      1:1000

Ps:For hydraulic jack,the Size, OD(30~80mm) Tolerance

 in ID: 0~0.08mm  OD(80~110) Tolerance in ID:0.1~0.35mm.