00691naa#a2200193#i#450# EN\\bibl\29568 20240502140319.4 2071-7318 20160425b2016####ek#y0engy0150####ca RU RESEARCH OF WELDING INTO SOCKET OF POLYPROPYLENE PIPES AT LOW AMBIENT TEMPERATURES Journal article Belgorod Belgorod State Technological University named after V.G. Shukhov 2016 5 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Botvin G.V. Danzanova E.V. Gerasimov A.I. bulletinbstu.editorum.ru