... PI-190(2), 3. NACE MR-0175. Large Diameter Thick Wall PSL2 ERW Welded Steel Pipe 323Design and manufacture ... seamless carbon steel pipe and tube, JCOE technology Large Diameter, Thick Wall Steel Pipes and Tubes, ERW/LSAW ... A179, A192, A252, A500;API 5L Gr.B spec 1/2.Material:According to NACE MR 0175 standard.Q345 ... IPS-M-PI-190(2) standard.ISO3183-3, API Spec 5L PSL2, ISO3183, GB/T9711, DNV OS-F101, ...