... .Length: 6 – 22 m 4.Steel Grade: Q235A, Q235B, Q345API 5L: GR A, GR B, X42,X46, X56, X60,X65,X70 ... 43, Grade 50EN: S275, S275JR, S355JRH, S355J2H 5.Standard: API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, GB/T9711 ... reply!Linda YuanSKYPE: lindayuan1124Mobile: +86-15226605670 albaba express erw api 5l gr.b spiral welded steel pipe