Steel warm water boilers of this unit are designed and produced under the supervision of IRAN NATIONAL STANDARD with the number of ISIRI-7911 or the analogous British one (BS-855). Also, it utilizes some soft wares like: SUPERACTION BOILER DESIGN & FIRE CAD.
It is possible to produce these boilers up to 400,000 Kcal/h capacities & 400,000 Kcal/h in DRY-BACK and WET-BACK shapes.
The process of design & production are fulfilled under the supervision of the experts of technical inspection & company,s quality control section.
The resistant steel sheets to water & fire (A516 GR-70 (DIN 17155) 17 MN4) are used in all designs.
Also , The seamless tubes of A106 GR-B & ST-35.8 (DIN 17175) and all branches are chosen based on the standards of A105-A106,ASTM.
All the related weldings are designed under the standard of ASME Sec.IX ,and are welded via one of SMAW , MIG, MAG, TIG method with special electrodes, after the confirmation and preparation of PQR & WPS.
For example, in SMAW method, (AWS) E 6010 electrode is applied for penetration welding, while (AWS) E7018 electrode is used for the other weldings.