... well .Packing: bundle or bulk Material grade: J55, K55, N80, L80, T95, 7 5/8" oil casing pipeCasing and Tubing Standard: API 5CT,Carbon ... a well .Packing: bundle or bulk Material grade: J55, K55, N80, L80, T95, 9 5/8" oil casingCasing and Tubing Standard: API 5CT,Carbon ... petroleum and natural gasHydraulic prop pipe27SiMnGB/T17396-199870-377*9-40Hydraulic support and prop API 5CT K55 Casing Pipe