... ST37,ST42,ST52 etc. Out Diameter 219mm-3048mm Wall Thickness 5.4mm-25.4mm Length 5.8m-20m ... 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 ... properties analysis,Chemical composition testing API 5L 3 layer PE coated Steel Pipe