ESCO Tool Company

75 October Hill Rd
Holliston,  MA  01746-1344

United States
  • Booth: B37012

ESCO Tool manufactures, sells and rents MILLHOG®, Hog Tie® and Flange Hog® tools for the fabrication and maintenance of tube and pipe systems.


-  Bevel the hardest tube and pipe alloys without cutting fluids at any angle.

-  Remove membrane, overlay and cladding from boiler tubes while beveling the   tube end.

-  Cut boiler tube panels quickly, accurately and with no “HAZ”.

-  Notch membrane from between boiler tubes without the risk of tube damage            due to deflection that can occur with flame notching.

-  Cut pipe to 60in O.D.

-  Expand boiler tubes using torque controlled rolling motors for precise tube wall   reduction and tight tube joints.

HOG TIE® Boiler Tube Alignment Clamp:

-  Accurately aligns boiler tube ends in preparation for welding.

-  Reduces the risk of tube joint failure due to misalignment.  

Flange Hog® Flange Facing Tool:

  • Reconditions RF and FF flange gasket seat surfaces with a precision phonographic finish. Fast set-up and manually operated.

 Press Releases

  • A pipe beveling tool for performing precision end preps on pipe up to 24″ O.D. and producing perfectly square end preps to assure high integrity
    welded joints is available from Esco Tool of Holliston, Massachusetts. The Dictator II MILLHOG® Pipe Beveler is an I.D. clamping welding end prep tool that aligns perfectly using self-centering clamps and performs any degree of bevel on pipe from 4.5″ I.D. to 24″ O.D. with up to a 2″ wall.

    Superior to hand grinding and other end prep methods, this tool includes a patented safety spring hanger for easy handling, positioning, and clamping. Featuring one mandrel and a set of three wide clamps that provide six points of contact to the pipe I.D., the Dictator II MILLHOG® Pipe Beveler mounts rigidly for chatter-free beveling, facing, and boring.

    Requiring no cutting oils, this pipe beveling machine is suitable for use on-site and in fabrication shops. Pneumatic, hydraulic, and electric power are available.

    The Dictator II MILLHOG® Pipe Beveler is available for sale and rent

  • A broad line of I.D. and O.D. clamping welding end prep tools and saws for cutting and beveling tube and pipe are available for same day rental anywhere in the U.S.A. from Esco Tool of Holliston, Massachusetts.

    Esco’s Rental Tools Program features the full line of MILLHOG® I.D. clamping welding end prep tools for beveling tube and pipe from 1” to 48” dia., the COHOG® O.D. clamping tool for 2” to 36” dia., and the Universal Air Powered Saw and track systems for cutting pipe up to 60” dia.

    Manufactured in the U.S.A., Esco’s Rental Tools can perform any degree of bevel on all types of alloys and cut extra heavy wall pipe to 36” dia. The Rental Program offers emergency support to minimize downtime and assure that the welding preparation job is done on time and within budget.

  • A pneumatic saw and pipe trolley system that is easy to operate and cuts a wide range of pipe materials including stainless steel, carbon steel, and concrete-lined pipe is available from Esco Tool of Holliston, MA.

    The Esco APS-438 Air Powered Saw and WrapTrack® System are designed to cut highly alloyed pipe perfectly square by providing a trolley that guides the saw around the circumference without wobbling. Ideal for repairing under-ground steam lines in situ, the saw cuts perfectly square with no HAZ and leaves a smooth finish for end prepping or joining pipes with couplings.

    Designed to fit pipe from 6” to 60” dia., the Esco APS-438 Air Powered Saw and WrapTrack® System is offered in 28 sizes of stainless steel bands that clamp onto the pipe and accept the saw which is mounted onto a trolley. Featuring a fiberglass reinforced blade, the operator simply maintains the blade’s leading edge on the pipe to produce a cut with ±1/16” accuracy.

    The Esco APS-438 Air Powered Saw and WrapTrack® System is available for rent or purchase.


    The all NEW COHOG® Clamshell Split-Frame machine for parting and beveling pipe features a new module cutting blade system with double-edged insert bits is available for sale or rent and manufactured in the USA ESCO Tool....

  • For decades, ESCO Tool has manufactured rugged, reliable and simple to operate tube and pipe fabrication equipment known to the industry as MILLHOG®. Years of working closely with end-users, has led us to develop our own line of split frame machines that hold true to our name. The all new COHOG® split frame eliminates the complication associated with traditional OD mounted tube and pipe fabrication machines while setting a new standard for lasting performance.

    COHOG® machines feature indexable tool slides and trip mechanisms that use a marked locating system to precisely align and quickly attach without shims or guesswork. A variety of blade modules easily attach to the tool slides and hold conventional high-speed tool steel blades or cutting inserts. 

    At the COHOGs® core is its unique frame made from 7075 aluminum and rotating ring, machined from a steel forging, heat-treated, and nickel-plated for corrosion and wear resistance. Self-squaring clamps quickly align and rigidly secure the machine enabling it to part and bevel heavy wall pipe, in one operation, without vibration or chatter.

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