Quick heating transformation  Cooling by air or water      Removal
         point degree      

    (A) heating    ⇒   (B) cooling    ⇒   (C) shrinking
■Shrinking process
1) Applicable to tubes of non-magnetic metals such as copper, aluminum,
  brass, titanium, as well as steel.
2) The vacuum ark discharge heating will heat a tube instantly, which will
  substantially shorten working time and labor costs.
3) No skilled worker. User friendly. Simple work.
4) No damages on tube sheet because of not using drill nor chisel.
5) Controlled heating is available. Repeatable works reproduce the same
  and consistent quality.
6) Arc generator, Vacuum pump, water cool circulator are compactly
  unified as a main body, suitable for a working site.
7) No over heating. No change in characteristic of the work piece.
8) No fire. No smoke. No noise. No workers' accident.

Considerably shorten your time - consuming work of removal of the used tubes.
■Features
Nessan technology for heating method with vacuum ark discharge substantially
shortens and simplifies the time-consuming work-removal of the used tubes
of boiler, heat exchanger, condenser, etc.
Tube Removal Device with Vacuum Arc Discharge
Supporting Device for Plant-Maintenance
High Frequency
Induction Heater

・HEARTS Heater
・MULTI Heater
・MOBILE Heater

H.F. Induction Heating
Device for Warp
Straightening

・Standard NETZ
(for deck steelsheet)

・Handy NETZ
(for wall steelsheet)


Electric Resistance
Heater for Preheating
and Annealing

・Sanric Series
・Heating Element

Heat-related Product
・Thermocouple
 Welding Unit

・Asecoat
 Heat-resistanr Wire


Supporting Device for Plant-Maintenance
・Tube Removal
 Device with Vacuum
 Arc Discharge

・Arc Cleaning Device
・Bolt Clamping heater

Industrial Furnace
・Industrial Furnace
 Variety

・ready made furnace

Local Post
Weld Heat Treatment


TIG for Tungsten
Products
NESSAN heat CORPORAION