... .5-18mm 3.Length:6m/9m/12m or other size API 5L spiral welded steel pipe Product NameSpiral Pipe/Spiral Steel ... Material Can Be Ordered)StandardGB/SY/DIN/ASTM/ASME/ASNI/API/UsageUsed For Gas, Petroleum, Water ,Oil, Structure And SewageEndsPlain or ... ,L245,A25,A,BExecutive StandardSY/T5037-2000,GB9711.1-1997,API SPEC 5L ASTM A53Application:structure steel pipe,boiler pipe,petroleum,gas ...