American standards:
ASTMA53\A106\A179\A192\A199\A210\A213\A519
German standards: DIN17175\2391\2393\17121\DIN1629\
European standards: EN10208\EN10216\EN10305/EN10255
Japanese standards:
JIS-G3461\G3462\G3463\G3441\G3444\G3452\G3454,
British standards: BS3059\BS6323\BS7191\BS1717\BS6323

Our ERW tubes are:
ASTM A 53/A 500, EN 10219 etc.

Our material are: ST 52.0, ST37.0, ST 35.8, T11, T22, P11,
P22, SAE 1020, SAE 4130,34CrMo, 35CrMo, 30CrMo, 37Mn5 etc.

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