Cevisa Bevelling Machines International Inc.
Bevelling Machines Specialists
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 Tube bundles puller It is completely automatic and can pull out and introduce heat exchanger tube bundles in petrolchemical plants thus reducing the work times and improving personnel safety as well as considerably reducing the plant stopping times. It is offered in three sizes according to the diameter and length of the tube bundle. Pulling sequence |
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Band saw for the dismantling and recovery
of heat exchanger tube bundles
For dismantling tube bundles we recommend BundleCut, the new band saw. The solid construction of its electro-welded structure, the use of precision guides and pads and several fundamental devices make this machine an absolute innovation to be included in a modern workshop of heat exchanger maintenance.
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BundleCut associated with the quick attaching gripper tube puller of the Grippul series, facilitates and highly speeds up the recovery of the tube sheets.
The quality of the mechanical band cutting in replacement of the oxygen cutting eliminates pollution from combustion gas and protects the holes of the tube sheet against scratching during extraction of the stubs.
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  Unit for the continuous pulling of tubes from 1/2" to 4" For pulling out tubes from heat exchangers in oil refineries, condensers in power plants, from boilers in sugarplants boilers, we offer six different pulling units equipped with different hydraulic pump units in pneumatic or electric version and three different pulling units equipped with the three following guns: |
  Tube semiautomatic hydraulic puller. It is cheap, easy to handle and suitable for small maintenance interventions. |
  Quick attaching gripper tube puller. It is cheap, handy and suitable for small maintenance interventions. It has been conceived to quickly pull tube stubs out of the tube sheets. It is available in the 10-20-30 versions for tubes having different diameters and extraction power. |
  Automatic hydraulic tube puller It is equipped with an automatic device for the continuous pulling of tubes at high speed; it is suitable for big maintenance interventions in condensers and heat exchangers. |
 Tools for the manual and cheap maintenance of the tube in heat exchangers   One revolution tube-cutter, adjustable reach from 50 to 150 mm. It has been conceived for hand use with a tap wrench and its functioning is based on the eccentricity of the blade. |
  High-speed steel (HSS) reamers with Morse taper connection. To be used to reduce the thicknesses of tubes to be replaced for a depth of about 80% of the thickness of the sheet. |
  Tube collapsing tool used for crumpling tubes of non-ferrous alloys or ferrous alloys made lighter with the use of the reamer F/791. |
  Tube expeller to be used preferably with a pneumatic hammer. |
  Manual puller |
  Flaring punch. |
  Pneumatic hammer specific for "Cheaptool" |
  Tube plug composed of ring and tapered pin in carbon steel (CS), brass (B), stainless steel (SS) or aluminium (AL). |
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 Internal expansion plugs for tubes in heat exchangers Pop a plug is undoubtedly an innovative proposal which enables the tubes in the heat exchangers to be plugged, by using a very easy, safe method with a plug which can be removed up to pressure of 4500 psi without welding. It is made up of three mechanical parts: a a threaded adapter b a sealing ring c a tapered pin The threaded adapter is fixed to the hydraulic pump and is then inserted in the tube at a minimum reach of 1.3/4" (about 45 mm) ; it must however be in the tube sheet area to guarantee safe anchoring. When the pump is activated, the tapered pin is pulled, by the threaded adapter, and passes through the sealing ring which expands and presses with its wings against the inside part of the tube thus guaranteeing the requested sealing. After reaching the pulling necessary to plug the tube, the threaded adapter detaches from the pin and remains attached to the gun.  |
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  The tube cutter for tubes from 1/2" to 1,1/2" designed to be used in maintenance of heat exchangers and boilers, allows the cut of 3-4 mm thick tubes made of high resistance material. The tool is operated by a portable electric three-phase low voltage 42V motor or by a pneumatic motor.   |