... : API 5L Gas and petroleum pipelines GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelinesSY/T5037 Spiral submerged arc-welded steel pipe for ... St13, St14, St33,St37, St44, ST52ASTM A 53: Gr. A, Gr B, Gr C, Gr.DAPI 5L: A, B, X42, X46, X52, X56, X60, X65 X70GB/T9711 ... L290, L320, L360, L390, L415, L450, L485, L555ASTM A252: Gr.1 Gr.2 Gr.3 Size range:Outer Diamter: 25.4mm - 304.8mm ...