... Diameter Thick Wall PSL2 ERW Welded Steel Pipe 1. API 5L PSL1/2, 2. IPS-M-PI-190(2), ... thickness less than 2 inch etc. Standard:According to API 5L Gr.B standard.GB/TB163, GB/T8162, GB/T3087, GB/ ... , G3461;ASTM A106, A53, A179, A192, A252, A500;API 5L Gr.B spec 1/2.Material:According to NACE MR 0175 standard ... .8, ST37, ST42, ST52, A53, A106, A179, API5L/GR.B-X42, X46, X52, X56, X60. X65. X70. X80.Weld ...