Seamless Steel Pipe Quick Details Standard: GB, ASTM, API Standard: GB/ T 8163-1999, GB/ T8163, GB/ T 3087, ... Grade: 10# -45# , 16Mn, A53-A369 Grade: 10# , 20# , 16Mn, A53( A, B) , A106( B, C) , A17... Thickness: 2 - 50 mm Section Shape: Round Outer Diameter: 1 - 28 inch Place of Origin: China ( Mainland) Secondary Or Not: Non-secondary Application: Structure Pipe Technique: Cold Drawn Certification: CE Special Pipe: Thick Wall Pipe Alloy Or Not: Non-alloy Type: Seamless Grade: A106-B A53-B A178-C ST458 ST42-2 Standard: ASME