... GR.B Carbon Steel Pipe Standard:API 5L,ASTM A106/A53, Size:OD 1/4"-48", WT 1.24mm-60 ... quality SEAMLESS STEEL PIPES API 5L/ ASTM A106, GR.BStandardASTM A106/ASTM A 53 API 5L,GB/T8163-1999 ... standard:API 5L, API SPEC5CT,ASTM A106,ASTM A 53,ASTM A210,ASTM A213,ASTM A179,ASTM A192,ASTM A252,ASTM A500, DIN 1629/2391/17172, ... A192,Q195,Q235,Q215 Size 1/4" to 48"(OD 13.7--1219MM) Lenght2-20m random or fixed. ...