... Tube-----------------------------------------------------------------------------------------------------------------Features Materials: H-40,J-55,K-55,N-80,C-75,L-80,C-90,C ... BTC, LTC,STC Grades: H-40, J-55, K-55, N-80, C-75, L-80, C-90, C- ... (mm)GradeType of threadLengthCasing4-1/2114.305.21-8.56H40-P110STC LC BC4.88-13.5m5127.005 ... -13.06H40-P110Oil pipe2-3/860.324.24-8.53H40-P110NU EU6.1-12.8m2-7/873 ...