... )Competitive price 4)Connection type: BTC,LC,STC API 5CT casing pipeStandards: API 5CT Grades:J55, K55, N80, L80, C90, T95 ... is available as per clients requirements.Specifications:O.D.: 4 1/2"-20", W.T.: 5.21mm- 22.22mm. Thread: STC ... or black rust preventing paint as per clients confirmationApplication: OCTG casing pipeDimensions, Mechanical properties, Chemical compositions: Refer to API 5CT EUE ...