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All steam boilers manufactured by Bohar Niro Company are produced according to international standards BS2790 and national standard 4231, which are designed and manufactured under the supervision of Iran Quality and Standard Inspection Company and are provided with a quality control plate and standard mark.
The production system is made as a wet rear with a working pressure of 6, 8, 10 bar. The capacity of steam boilers is from 100Kg/h to 10000Kg/h and the design temperature is 250 degrees Celsius.
Installation of steam boilers with multiple manholes and handholes enables access to the surface of the tubes and the furnace, which makes this service - descaling and repair easy for the consumer. The design and construction of all boilers are based on the plans approved by An inspection is carried out, which is provided to this company with the latest revisions by design experts.
The front and rear valves make it easy to visit, service and repair the boiler and reduce the long duration of related operations. Due to the proximity of the pipe sections to the furnace, it is easy to inspect, service and repair the furnace and tubes. Steels used in shell construction Furnace and boiler grids are 17mn4 - DIN 17155 and A516GR70 and heat tubes are St35.8 - DIN17175. The design of the boiler is equal to 1/1 of the maximum working pressure and hydrostatic test is done at 1/5 times the design pressure. All welding lines are tested according to national and international standards by representatives of Iran's Standards and Industrial Research Department, which include radiography, ultrasonic, penetrating and hydrostatic tests. All welders have been tested for welding qualification according to EN 287-7 standard. and has a welding qualification certificate from the most reliable inspection and test centers, under the full supervision of the factory's quality control unit. The electrodes used for penetration and complementary welding are E6010 and E7018, which are used in accordance with the relevant PQR and WPS. All the flanges used are of standard PN16 type. The design and construction of the boiler doors are hinged and openable, which makes possible repairs of the boiler easier. Proper insulation by stone wool and aluminum or steel cover (according to the buyer's request) prevents heat loss and while protecting the boiler against moisture and all external factors, adds to the beauty of the installation site. It has high efficiency and reliability, and the presence of pressure control switches and safety valves, as well as a fountain glass for visual control and a siren maximizes the safety risk of the device.
How the boiler works
A boiler is basically a closed chamber in which water is heated until the water turns into steam at a desired pressure. Its fuel, which is basically coal, is burned in the furnace and then hot gases are produced. These hot gases are in contact with the water chamber, the heat of these gases is transferred to the water, and as a result, steam is produced in the boiler. Then these vapors are transferred to the turbines of thermal power plants. Different types of steam boilers are used for different purposes such as sterilizing equipment, heating the surrounding environment, various industries, etc
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