... customized any specifications Stainless Oil Casing PipeAPI 5CT H40/J55/K55/N80/L80/P110/Q125 Casing Pipe with LTC\ STC\ ... tubes for well spainend casing pipes2. Steel Grade: H40, J55, K55, N80, M65, L80, L8013CR, C90, C95, T95, P110, Q125, ... .11. Mill Test Certificate: EN 10204/3.1B H40, J55, K55, N80, M65, L80, L8013CR, C90, C95, T95, P110, Q125, ... you very much. Seamless Oil Casing Tube (API 5CT K55)