Large Diameter Thick Wall PSL2 ERW Welded Steel Pipe 1. API 5L PSL1/2, 2. IPS-M-PI-190(2), ... meters, thickness less than 2 inch etc. Standard:According to API 5L Gr.B standard.GB/TB163, GB/T8162, GB/ ... , G3456, G3461;ASTM A106, A53, A179, A192, A252, A500;API 5L Gr.B spec 1/2.Material:According to NACE ... According to IPS-M-PI-190(2) standard.ISO3183-3, API Spec 5L PSL2, ISO3183, GB/T9711, DNV OS-F101, ...