We can provide ERW steel pipe,  The outside diameter of this kind of ERW steel pipe is from 89mm to 720mm with wall thickness 4mm-13mm.

If you want know more info of the ERW steel pipe,please contact.
Slina(Sales manager)

Skype: slinawm
MSN: slinawm2009@live.cn
Email: slinawm2009@yahoo.cn