Construction Project Machine interlocking Kelly bar drilling rig
1. Main Features
(1) The kelly bar is imported from Germany or adomestic high strength seamless steel pipe manufacture.
(2) All kelly bars are available as friction and interlocking version.
(3) High strength steel tube material is picked and heat-treated to arrange production.
(4) Special toolings are set up to ensure the straightness of tubes during welding process
1. Square head following section bold, more solid, not easy to break
2. Welding: processing all welding two times more durable
3. The first row of the pressure point two holes, more solid, which greatly reduces the rebound is not easy to break, and the pressure point is lengthened 500mm, longer and more durable
4. Oblique tooth widening, no longer parallelogram, but symmetry and pressure points, unlock more convenient, prevention with rod
5. Protective ring, easy to wear point replaced removable replacement parts, easy to maintain, more wear and increase the service life of the Kelly bar
6. Driver sets: Our products internal spline to 1 m, longer, more wearable, and the drive sleeve height 1.2m (other manufacturers internal spline generally is 600 / 800mm, tube 1 meter high
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