Azimov , S. and Toshqobilov, J. 2025. CALCULATIONS FOR HEAT EXCHANGER EXPANSION BELLOWS MADE OF B443 (UNS N06625) MATERIAL. Techscience uz - Topical Issues of Technical Sciences. 3, 5 (Aug. 2025), 80–86. DOI:https://doi.org/10.47390/ts-v3i5y2025N11.