Three-pass hot water boiler -2500 kilowatts

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Packman Company’s fire-tube hot water boilers, according to the European standard EN12953, are designed as three-pass, wet back with an internal return chamber, with an efficiency of 86%.

(Three Pass, Wet Back, with Internal Reversal Chamber)

These boilers are produced with capacities ranging from 350 to 20,000 kilowatts and can operate at pressures up to 30 bars.

Packman Company’s fire-tube hot water boilers are constructed from seamless fire-tubes and heat-resistant carbon steel plates, with specifications compliant with the referenced standard. The thickness of these materials is determined in accordance with the boiler’s operating pressure.

Furthermore, these boilers are constructed from integrated network of firetube pipes and corrugated combustion chambers, with specifications compliant with the mentioned standard.

In the manufacturing process of Packman Company’s hot water boilers, the latest methods of submerged arc welding (SAW) and flux-cored arc welding (FCAW) with automatic equipment are utilized.

Additionally, in-process inspections, including welding inspection and non-destructive testing (NDT), are conducted on weld lines during manufacturing.

After the completion of welding operations and the mentioned inspections, necessary tests such as hydrostatic testing are conducted. As a result, all hot water boilers manufactured by Packman Company will be equipped with standard plates at the time of delivery to the customer.

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SKU: PHWBN-2500 Category: Tags: , , , , , , , ,
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In the design of three-pass fire-tube hot water boilers by Packman Company, the three passes of flue gas start sequentially from the boiler furnace. They pass through the second furnace, return to the second-pass tubes, and are transferred to the third-pass tubes from the front door side. The exhaust gas is directed towards the boiler flue after passing through the third pass tubes, which are located at the end of the boiler.

Packman Company’s horizontal hot water boilers are produced as fire-tube and three-pass according to the BS-EN-12953 standard.

According to the standard, the furnaces of hot water boilers are manufactured with specified capacities using unique machines, in a corrugated form. In manufacturing the furnace in a corrugated form, skill in calculating and producing the depth and pitch of each corrugation is very important. Packman Company, with over 50 years of experience in producing steel boilers, has achieved this expertise.

Packman Company’s boilers are stress-relieved according to the specified capacities and thicknesses based on the aforementioned standard. The thickness of which is determined according to the boiler’s operating pressure.

The boiler tubes are made of ST35.8 seamless steel, which is exclusively imported by Packman Company from European countries.

Heat-resistant pipes are welded using special equipment with the method of fusion welding (for welding the network).

Boilers at Packman Company are welded using sub-arc and flux-cored welding machines from Isab Sweden, and with electrodes from Isab, Geka, and Ama. The welding of boilers is carried out under the strict supervision of Packman Company’s Quality Control (QC) team according to specified WPS (Welding Procedure Specifications). All necessary tests, including UT (Ultrasonic Testing) or RT (Radiographic Testing), are performed on the boiler welds.

It is worth mentioning that inspectors from the Standards Department are permanently present at Packman Company (as resident representatives of the Standards Department), and they review all necessary documents and tests. Upon delivery of boilers from Packman Company, standard plates will be provided, and if requested, documents such as WPS, PQR, etc., will be presented to the customer.

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