... ,STC,LTC The detail of the Casing Pipe Product NameBrief IntroductionMaterialAdditional Description 4 1/2" oil casingCasing and Tubing Standard: API 5CT ... or bulk Material grade: J55, K55, N80, L80, T95, , 5" oil casing pipeCasing and Tubing Standard: API 5CT,Carbon SteelLength: R2 ... Material grade: J55, K55, N80, L80, T95, 7 5/8" oil casing pipeCasing and Tubing Standard: API 5CT,Carbon SteelLength: R2 ...