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Our team have wide experience in design > fabricate > Erect, of wide range of chimneys, cooling towers and industrial stack towers, and could also fabricate them from galvanized steel or aluminum and with or without insulations

  • Special industrial chimneys for power plants, cement plants, chemical and petrochemical projects
  • Cooling towers (Special industrial radiators) for power plants, refineries, chemical plants.

Natural draft cooling tower

The natural draft or hyperbolic cooling tower makes use of the difference in temperature between the ambient air and the hotter air inside the tower. As hot air moves upwards through the tower (because hot air rises), fresh cool air is drawn into the tower through an air inlet at the bottom. Due to the layout of the tower, no fan is required and there is almost no circulation of hot air that could affect the performance. Concrete is used for the tower shell with a height of up to 200 m. These cooling towers are mostly only for large heat duties
because large concrete structures are expensive.


Industrial stacks and Chimneys

Usually a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air. Flue gases are produced when coal, oil, natural gas, wood or any other fuel is combusted in an industrial furnace, a power plant's steam-generating boiler, or other large combustion device. Flue gas is usually composed of carbon dioxide (CO2) and water vapor as well as nitrogen and excess oxygen remaining from the intake combustion air. It also contains a small percentage of pollutants such as particulate matter, carbon monoxide, nitrogen oxides and sulfur oxides. The flue gas stacks are often quite tall, up to 400 meters, below are actual photos of some of projects we awarded in fabrication and installation in Iraq.


Other types of air towers (IN/OUT Air Processing)

  1. Primary goal is to market the LNG Air Tower Vaporization process
  2. This patented process enables builders of LNG Receiving Terminals to heat the LNG by using the heat of the ambient air via a Heating Tower
  3. The proprietary process 
    1. creates substantial cost savings with high ROI
    2. reduces emissions 
    3. has no impact on marine environment
  4. The process is being used on production scale at the LNG Receiving Terminal in Freeport, Texas. Operation has started in June 2008. 
  5. Conservative estimates show that the annual fuel gas consumption can be reduced by 70% compared to a regular fuel gas vaporizing 
  6. Processes under weather conditions in the Gulf Coast area.

Isnad is a distributer of two large southeast Asian professional manufacturers of diesel generators that’s adopt original imported engines manufactures by Caterpillar and Rolls-Royces USA, and Perkins UK.

These engines adopt the latest technologies and high quality grind-proof materials to assure a world class level.

And furthermore matches the Leroy Somer alternators manufactured by Emerson Group with NEMA1 and IP22 standards.
Our supply range start from 12kVa to 2,500 kVa


Switchgears and Control Panels:

Through our experience and the joint venture with Control Equipment Ltd. (Established in 1982 in Ireland), Al rai became a Leading Switchgear and Control Panel Manufacturers and willing to be the official licensee for the ABB MNS and ArTu Systems in Ireland. We produce a complete range of Switchgear for large scale industrial and commercial projects in multiple sectors.


Packaged Sub-Stations

Are generally provided as single or double ended units utilizing dry type transformers directly connected on the low tension side to the main breakers of the sub-station. Treble ended or multi supply can also be catered for using our type tested MNS system.



  • Direct connection of transformer via bus-bar to switchgear eliminates cables and associated hazards
  • Dry type transformer no oil spills
  • Internal mounting all equipment LV and MV in same area.
  • Pehla certification against arcing up to 50ka
  • Up to form 4 type 7 construction.


  • Space saving
  • Less cabling
  • Ease of maintenance

Based on our professional team and strong support from our partners, we can provide industrial power plants with the capability of 1,000 MW fired fuel (HFO, Diesel and Gas) at the same time we provide professional services with integrated solutions to our clients such as project planning, engineering, design and management, equipment fabrication & procurement, supervision of construction, installation, commissioning and test rum, and after sales training service.


Key Properties:

  • Customized engineering design according to prevailing standards, main equipment always in accordance to ASME codes, control system and electrical system will be according IEC standards.
  • Customized boilers according to the ASME, whether it is stroker boiler, CFB boiler or pulverized fried boiler, to adopt different fuel types.
  • Steam turbines, conducting, extraction or back pressure units.
  • Control Systems, either PLC or DCS
  • Supervision for installation at the construction site
  • Flexible training manner for operators, in or out side Iraq.
  • We provide spare parts ASAP.
  • Providing the third party inspection services.

Key points:

  • Rich experience
  • Capability to communicate with client’s technology and language
  • Many successful cooperation achievements supplying and installing complete sets of equipment and spare parts.
  • Rich experience in cooperation with foreign companies such as Wärtsilä and ABB.

Other Power Related Experiences:

  • Control panels and automation  Projects
  • Fuel stations and storage solutions projects
  • Water intakes and circulation projects
  • Fire fighting projects
  • Transformation station and distribution projects
  • Overhauling, reconstruction and maintenance projects