1.standard:BS, GB, ASME, ASTM,DIN,ASNI 2.material:Q195,Q215,Q235A/B,Q345 3.OD:21.3-12400mm,TH:2-60mm 4.favorable price Product NameErw Straight Welded Steel Pipe/ erw tubes SizeOD21.3~1420mmThickness2-60mmLength2/3/4/5.8/6/8/9/12m and other size according to customer needSteel materialQ195, Q215, Q235A,B, Q345, ST37-ST52 GR.B A106 ,A53 X42-X70,0Cr13,1Cr17,00Cr19Ni11,1Cr18Ni9,0Cr18Ni11Nb,16Mn,L245 ...