API 5L /ASTM A106 GR.B Carbon Steel Pipe Standard:API 5L,ASTM A106/A53, Size:OD 1/4"-48", WT 1.24mm-60 ... SEAMLESS STEEL PIPES API 5L/ ASTM A106, GR.BStandardASTM A106/ASTM A 53 API 5L,GB/T8163-1999,DIN 1626,JIS G3462.We also can supply Other standard:API 5L, API SPEC5CT,ASTM A106,ASTM A 53,ASTM A210,ASTM ...