1)OD:8mm-210mm
2)Length:6-9mtr or fixed
3)Material:Q195-Q235,10#-45#,16Mn,Q345,12Cr1Mov,15CrMo,304,316,20Cr,40Cr,
20CrMo,35CrMo,42CrMo,40CrNiMo,GCr15,65Mn,50Mn,50Cr,3Cr2W8V,
20CrMnTi,5CrMnMo etc.
4)Standard: GB699-1988,GB700-1988,GB3077-1988,GB702-1986,QJ/HG02.17-1991 .