1.Grade:J55,K55,N80,L80,P110 2.Type:API Tubing Pipe 3.Thread:STC,LC,BC 4.Standard:API 5CT ... and accord with the requirements of API 5CT. API 5CT Tubing PipeMaterials: J55, K55, N80 1, N80 Q, L80, ,C90,C95 ... ,P110,Q125,P: Plain end, N: Non upset, U: External upset, T&C: Threaded and coupled.Grades: J55, K55 ...