Integral lift sub is the specialized tool of lifting drill in petroleum ,natural gas,geologic,exploration and drill engineering.Nominal size(mm) I.D.(mm) O.D.of join(mm) joint length(mm) Connection Nominal size(mm) I.D.(mm) O.D.ofjoin(mm) joint length(mm) Connection 73 31.8 79.4 250 NC23 127 82.695.3 177.8 250 NC50 44.5 88.9 NC26 184.2 89 54.0 104.8 NC31 196.8 300 NC56 50.8 120.7 NC35 203.2 68.3 127.0 NC38 209.6 6 5/8”REG 127 71.4 152.4 NC44 228.6 NC61 158.8 241.3 7 5/8”REG 82.6 158.8 NC46 247.7 NC70 165.1 254 NC70 171.5 279.4 NC70
