Kelly bars are key components in the execution of boreholes by hydraulic rotary drilling rigs. Telescopic Kelly bars transfer torque and crowd force from the rotary drive to the drilling tool. SIP&T is a highly specialized manufacturer of telescopic kelly bars to be applied to any type of piling rig available in the market.
Kelly bars can be selected into friction and interlocking type. Friction kelly bars are properly defined by their frictional contact between rail of each element. Interloking kelly bars are indeed privided with drive ribs which are welded with lock devices in order to transfer the maximum torque to each scope.
SIP&T kelly bars are designed by technicians and engineers with over twenty years experience.
Construction and welding manufacturing process of SIP&T kelly bars is by means of high quality materials and high mechanical features steel, provided with origin and quality certificates to guarantee long-life and reliability of the product after accurate engineering process.
SIP&T is able to manufacture kelly bar for all type of piling rig.
We are pretty sure to guarantee the best relaiability, thanks to to quality of our raw material, certification of our steel and high respect to Quality standards ISO 9001 . All kelly bars are manufactured according to our technical SIP&T standards and they have a warranty of one year or 2000 working hours.
Morevoer, all kelly bars can be provided of a damping noise system, which can sensibibly reduce the high frequency noises during the working operations. This system is composed by a phonoassorbent material applied to the outer scope of kelly bar and protected by a steel plate.
Technical specifications Friction and interlocking Kelly bars
Scopesno. 3/4/5 or on request
Drive Stubin forged steel
Upper shock absorberwith rubber or spring (where applicable)
Lower shock absorberwith spiral/discs spring or rubber (where applicable)