Frictional kelly bar interlock kelly bar locking kelly bar friction kelly bar for foundation construction piling ben@chinaunimate.com
Interlocking kelly bar
Interlocking kelly bar can be two type: one is 3 or 6 sets external straight bar with 3 or more pressure boards. The other is 3 sets external straight with full pressure keys on it, apply for IMT rigs. This interlocking kelly bar mostly used for hard layer, like rock or stone layer etc.
Friction Kelly bar
Friction kelly bar is composed 3 or 6 sets straights wear-resistant seamless alloy strips. Working by rotary Friction power digging hole, apply for soft layer, like mud or sand layer etc.
Drilling rig kelly bar & spare parts
We supply all accessoreisfor rotary drilling rigs, like swivel joint, damper spring, motor, speed gearbox,damper rubber, base parts, like track roller, guide roller, gear ring, pulley etc.
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