In the design of Packman Company’s three-pass firetube steam boilers, the smoke passes through the furnace three times. It starts from the boiler furnace, then returns through the second furnace, enters the tubes of the second pass, and finally, from the front door, it is transferred to the tubes of the third pass. 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.

Horizontal steam boilers by Packman Company are manufactured in firetube and three-pass configurations according to BS-EN-12953 standard.

Steam boiler furnaces, according to standard specifications, are constructed in specified capacities using unique devices, in a corrugated form. In the construction of the furnace in a gate-like manner, skill in calculating and producing the depth and step of each projection is very important. Pakman Company, with over 50 years of experience in manufacturing steel boilers, has achieved expertise in this matter.

Boilers manufactured by Packman Company undergo stress relief operation according to the specified capacities and based on the mentioned standard and thickness. 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. Boiler welding is carried out by Packman company’s Quality Control (QC) group with precise supervision and according to specified Welding Procedure Specifications (WPS). All necessary tests, including UT (Ultrasonic Testing) or RT (Radiographic Testing), are performed on boiler welds.

It’s worth mentioning that inspectors from the Standards Department are permanently present at Packman Company (as resident representatives of the Standards Department), reviewing 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.