api 5l astm a52 welded steel pipe 1.Size: ... 40mm,SCH10-SCH160 3.Standard:ASTM A52/A53/A106,API 5L api 5l astm a52 welded steel pipe Size1/2"- ... XXSLength5-12mMaterialcarbon steel,stainless steel,alloy steel,StandardASTM A53/A106,API 5L,GB/T3091,JISApplications Rangeused for water, gas, stream ... or according to the customers' requirement PortTianjin Xingang seaport,China. api 5l astm a52 welded steel pipe