Tarabukin , I. 2021. CALCULATED DETERMINATION OF PRE-HEATING PARAMETERS FOR WELDING POLYETHYLENE PIPES FOR GAS PIPELINES AT LOW AIR TEMPERATURES. EurasianUnionScientists. (Jun. 2021), 29-31. DOI:https://doi.org/10.31618/ESU.2413-9335.2021.1.86.1353.