Mechanical tubes and Structural tubes DIN17175, EN10216-2 ST 52.0, ST37.0, ST 35.8 16Mo3, 15Mo3, 10CrMo910, 12CrMo910 25CrMo, 25CrMo4, 34CrMo, 34CrMo4, 35CrMo, 30CrMo, 37Mn5 etc. Size: OD: 6-219mm WT: 1-50mm 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