Specification :

DIN2391EN10305 ST37.4 NBK
Seamless cold drawn precision steel tubes
Inside surface precision seamless tubes for hydraulic pressure and pneumatic services,
Black Phosphate Seamless Steel Tube,
Can be Used in Hydraulic Systems.
For Auto use,
For machinery use.
For oil cylinder tube.
Motor cycle shock reducer,
For auto reducer innder cylinder

Size:
OD: 4-280mm
WT: 1-50mm

Steel grade:
ST35, ST37, ST37.4, ST45, ST52,
E215, E235, E255
24CrMo4, 24CrMo, 35CrMo4, 35CrMo, 20Cr
Richard Shen
Ningbo New-Era Steel Tube Co,.Ltd
Tel: 0086-574-87334900
Fax: 0086-574-87715158
Mobile: 0086-(0)137 3616 4628
Email: Richard831228@gmail.com
Msn: Richard831228@hotmail.com
Skype ID: Richard831228