... :API J55, 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 ...