... , API K55, API N80, API L80, API ... Oil casing pipe)Specification: 114.30-339.73*5.21- 12.19Standard ... 75, N-80, C-90, T-95, Q-125, P110Connection:Casing: LTC, STC, BTC.Tubing: NUE, EUEEnd:Beveled, Square cut ... . And pipe protection cap specially for casing and tubingSurface:Corrosion proofing water based paintHeat treatment:Normalized, Quencher ... 8"339.739.65-12.19 API 5CT Casing PIPE