... pipeOD:21.3-219mm, Thickness: 0.8---12mm Standard: API 5L (A, B, X level of series); Making ... oil, gas transmission pipelines and other oil drilling and casing, and can be used for the structure, shipbuilding, ... 42,X-46,X-52,X-56,X-60 API 5CT tubing and casing pipe: H40, J55 4) Diameter range: 73mm ... rust. 9) Standard: API 5L & API 5CT and so on 10) Certificate: API 5L PSL-2, API 5CT, DNV ISO 9001, ...