Casing Pipes and Pipes for Core Barrels

Casing pipes and pipes for core barrels of high durability are used in drilling wells during the exploration of solid minerals and water, in engineering-geological works and in the construction.

The foreseen modification of casing pipes and pipes for core barrels is joint, connected with the help of nipples, which have on both ends the outside thread.

Casing Pipes and Pipes for Core Barrels

Drill pipes are made of steel group of durability K, according to customer’s coordination drill pipes can be made of steel 45.

Technical  characteristics of casing pipes

Standard size External diameter of the pipe and connector D, mm Internal diameter of connector d1, мм Wall thickness of the pipe t, mm Weight, kg Thread Torque, Nm (±5%)
1 m of the pipe connector Steel 45 Steel strength K
57×4.0 57 46.5 4.0 5.23 0.8 52х4 675 888
57×4.5 57 46.5 4.5 5.83 0.8 52х4 675 888
73×4.0 73 62.0 4.0 6.81 1.0 68х4 1220 1605
73×5.0 73 62.0 5.0 8.38 1.0 68х4 1220 1605
89×4.5 89 78.0 4.5 9.38 1.3 84х4 1650 2171
89×5.0 89 78.0 5.0 10.36 1.3 84х4 1650 2171
108×4.5 108 95.5 4.5 11.49 2.4 103х4 2310 3040
108×5.0 108 95.5 5.0 12.70 2.4 103х4 2310 3040
127×5.0 127 114.5 5.0 15.04 2.6 122х4 3015 3968
146×5.0 146 133.5 5.0 17.39 2.8 141х4 3758 4946

Note: According to the customer’s agreement we can produce drill pipes with length from 0.4 up to 6.0 m.

Mechanical properties of pipes (at least)

Parameters Steel strength K Steel 45
Tensile strength, MPa 686 539
Yield strength, MPa 490 323
Elongation, % 12 16
Hardness HRC