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SledgeHammer Oil Tools Pvt.Ltd
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Commitment Towards Perfection
Commitment Towards Perfection

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SledgeHammer's Welded Spiral Vane Solid Rigid Centralizer Fixed is designed same as Welded Spiral Vane Solid Rigid Centralizer except rows of set screws on the outer periphery of centralizer to restrict rotation. It can be easily converted from fixed to non fixed design by detaching set screws and positioning with stop collars. All centralizers are stored painted or coated with polyester powder.

These are available in all sizes ranging from 3 1/2" to 20". Any special sizes can be made available on request.


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SledgeHammer Stand Off Band is designed to provide a positive stand off the casing for both cased and open holes. The angled fins provide increased turbulent flow. These Stand off Band is require where close tolerance between the casing and the hole is being encountered. Mainly it's designed for the liner applications. Design of the stand off Band allows for reciprocation and rotation during cementing and can be installed between Set Screw Stop Collar (SC04).

These Stand Off Band undergo a special Phosphate coating process to prevent from Rust then coated with special Polyester Powder.

These are available in all sizes ranging from 3 1/2" to 20". Any special sizes or combination can available on request.


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Electrodes, which assured ultimate strength and uniformity in every weld. Steel construction provides superior toughness over other materials. Vanes can be selected to meet any hole dia from a choice of seven boat profile depths. Straight Slip On Spirolizer are provided for direct installation on the pipe by slipping on and can be provided with compatible Stop Collars beveled from one side positioned by set screw.

Fins are designed to provide low coefficient of friction to reduce drag forces while running the pipe. Fins create vortex flow to optimize mud displacement and minimize pressure drop across the centralizer. Straight blades yield to allow passage through unexpected under gauge open hole. These are shipped in assembled condition only.

These centralizers undergo a special Phosphate coating process to prevent from Rust then coated with special Polyester Powder.

These are available in all sizes ranging from 3 1/2" to 20". Any special sizes or combination can available on request.


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SledgeHammer's Solid Heavy duty Spirolizer are specially designed for extra heavy load in highly deviated Horizontal well and for use with Liner Hangers. The heavy steel construction is highly effective as compare to other alloy. Wide symmetrical Spiral fins are welded to the one piece rolled formed Sleeve under required temperature and condition with extra low Hydrogen coated Electrodes, which assures ultimate strength and uniformity in every weld.

Steel construction provides superior toughness over other materials. Vanes can be selected to meet any hole dia from a choice of seven boat profile depths. Slip On Spirolizer are provided for direct installation on the pipe by slipping on and can be provided with compatible Stop Collars beveled from one side positioned by set screw. Hydrodynamic shapes of spiral fins allow optimal mud displacement and minimal pressure drop across centralizer. Induced vortex flows enable superior mud removal. They have high wear resistance and resist high side load. Slip On Solid Spiralizor are provided for direct installation on the pipe by slipping on and can be provided with compatible Stop Collars beveled from one side positioned by set screw. They are shipped in assembled condition only.

These centralizers undergo a special Iron Phosphate coating process to prevent from Rust then coated with special Polyester Powder.



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SledgeHammer's Spirolizer is designed specially for highly deviated or horizontal wells. Ideal for use with Liner Hangers. The steel construction ensures extra strength and superior toughness. The boat shaped Spiral fins minimize Drag Forces while running pipe. The fins glide smoothly in the low side of horizontal bore holes. Wide symmetrical fins are smoothly beveled on the both ends to have lower coefficient of friction and to ease casing movement in either direction.

Fins designs also resist high side load. Spirally oriented Fins are welded to the one piece rolled formed End Collar under required temperature and condition with extra low Hydrogen coated Electrodes, which assures ultimate strength and uniformity in every weld. Steel construction provides superior toughness over other materials.

Vanes can be selected to meet any hole dia from a choice of seven boat profile depths. Slip On Spiralizor are provided for direct installation on the pipe by slipping on and can be provided with compatible Stop Collars beveled from one side positioned by set screw.

They are shipped in assembled condition only. These Centralizers undergo a special Iron Phosphate coating process to prevent from Rust then coated with special Polyester Powder. These are available in all sizes ranging from 3 1/2" to 20". Any special sizes or combination can available on request.


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Sledgehammer’s Centralizer Subs are used to allow the operator to run centering devices into wellbores where standard tolerance Centralizers are restricted due to Stop Collars not being capable of withstanding drag and fit limitations. Bow Springs can be supplied in almost any casing size, grade or thread and for use in the most challenging wellbore configurations. The Bow Spring Centralizer can pass through annular spaces below ¾” per side without compromising the centralizer’s performance in under-reamed hole sections.

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SledgeHammer’s Slip On Welded Semi-Rigid Centralizers share many of the same design and operational features as Hinged Welded Centralizers. They can be directly installed onto pipe and are provided with set screw style Stop Collars to increase the holding force. The Collars are innovatively designed with roll formed peripheral ridges that provide extra rigidity. The Centralizers are available in a variety of Bows configured from a choice of four standard Bow heights.

All Centralizers undergo a special iron phosphate coating process to prevent corrosion and are then coated with a special polyester powder.

This product is shipped in assembled condition only. It is available in all sizes ranging from 3 1/2” to 20. Any special sizes or combination can be made available upon request.

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SledgeHammer's Hinged Welded Semi rigid Centralizer ensures high efficiency in casing. Welded Centralizer has more Restoring Force as compare to Non Weld Centralizer. The Centralizers have double crested Bow Spring strongly welded to the End Collar under required temperature and condition with extra low Hydrogen coated Electrodes, which assures ultimate strength and uniformity in every weld. Integral hinge folded on the inside stay intact even under extreme stress. The End Collars are designed with a reinforcing Rib stamped into the End Collar to give maximum structural toughness. These generally shipped in half assembled condition for economy in shipping and storage cost. These Centralizers are available with combination of Bows configure from choice of four standard Bow height for optimum starting and Restoring Force. These centralizers undergo a special Iron Phosphate coating process to prevent from Rust then coated with special Polyester Powder.

These are available in all sizes ranging from 3 1/2" to 20". Any special sizes or combination can available on request.

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