... or bulk Material grade: J55, K55, N80, L80, T95, , 5" oil casing pipeCasing and Tubing Standard: API 5CT,Carbon Steel5"ZS300MeterLength: R2, R3 ... : bundle or bulk Material grade: J55, K55, N80, L80, T95, 7" casing pipeCasing and Tubing Standard: API 5CT,Carbon Steel7"ZS300MeterLength: R2, R3 ... prop pipe27SiMnGB/T17396-199870-377*9-40Hydraulic support and prop API 5CT K55 Casing Pipe