High Efficiency OD470mm Depth 28m Drilling Kelly Bar , Bauer Kelly Bar For Drilling Rig 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, ....
Unique Piling Drill Kelly Bar Parts Spring For Rotary Drilling Rig 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction kelly bar, .....
377mm Dia 18 Torque Drilling Kelly Bar Drill Rig White Color 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction kelly bar, combined ...
High Efficiency Unique Piling Drill Q345B Kelly Bar Parts ISO9001 2008 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction kelly bar...
ISO9001 2008 406mm Diameter Drilling Kelly Bar High Strength 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction kelly bar, combined ...
24m Depth 394mm Dia Kelly Bar Drilling Equipment Abrasion Resistance 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction kelly bar, ...
Depth 50m Torque 18 Kelly Bar Drilling , Telescopic Kelly Bar High Efficiency 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction .....
65m Depth 440mm Dia Friction Kelly Bar , Kelly Pipe For Sany Rotary Drilling Rig 1. Material: Q345B or 35CrMo 2.Type: Interlocking kelly bar, friction ...