... -1,EN10224 L235,L275,L355;EN10025 S235JR,S235JO,S235J2,S275JR,S355JR,S355JO,S355J2,S355K2; DIN 1629 ST37,ST42,ST52 etc. Out Diameter ... of Origin China Main Market Middle East,Africa,South-east Asia,USA,Canada,South America Technique SAW welding UsagePiling projectheat-supply project ...