api 5l astm a52 welded steel pipe 1.Size:1/2"-48" 2. ... -SCH160 3.Standard:ASTM A52/A53/A106,API 5L api 5l astm a52 welded steel pipe Size1/2"-48"(DN15-DN1200 ... -12mMaterialcarbon steel,stainless steel,alloy steel,StandardASTM A53/A106,API 5L,GB/T3091,JISApplications Rangeused for water, gas, stream ... to the customers' requirement PortTianjin Xingang seaport,China. api 5l astm a52 welded steel pipe