Advantages: Produced for drilling with uniform wall-thickness, wall thickness deviation +/-5%. High dimensional accuracy and nice straightness, straightness 1/1000mm or 0.5/1000mm. Reliable performance (including hardness) and nice torsion-resistant.
Main standards: ASTM A519, DIN.
Main materials: 4130, 4135 and 4140.
O.D. 30 to 127mm,
W.T. 5 to 13mm
For QT condition:
Tensile strength>=1030Mpa,
Yield strength: >=950Mpa,
Elongation: >=13%,
HRC 30 to 32.
Zhejiang Dingxin Steel Tube Manufacturing Co., Ltd.
ISO9001, TS16949.
Contact person: Lisa Hsu,
sales04[at]dingxintube[dot]cn
Mobile:+86-15669301195