... A106 GR.B Carbon Steel Pipe Standard:API 5L,ASTM A106/A53, Size:OD 1/4"-48", WT 1.24mm-60 Material ... :GrA, GrB,X42 Kingmetal resources co.,ltd can supply high quality SEAMLESS STEEL PIPES API 5L/ ASTM A106, GR ... 1629/2391/17172, JIS 3461/3462, BS3059,BS1387 etc Material: Gr A, Gr B, X42, X52, X60,X80,10#,20#,35#,45 ...