... API5LGr.B,X42~X80;ASTMA252 Gr.2,Gr.3;ASTMA53 Gr.BSY/T 5037-2000;SY/T5040- ... ,S355JR,S355JO,S355J2,S355K2; DIN 1629 ST37,ST42,ST52 etc. Out Diameter 219mm-3048mm Wall Thickness 5. ... South America Technique SAW welding UsagePiling projectheat-supply project 3. conveying drinking water,drainage,coal gas,fuel gas ... . Bevelled or plain ends as per buyer's request,3. Marks: as per customer's request, 4. Surface ...