?????? ???????? ???? ????????? ? ?????? ?????
PE ??? ???? ???? ?? ??????? ?????? ?????? ?????? ?? ???????? ???? ??????? ?????? ???? ????? ??????? ??????. ??? ?????? ?? ????? ???????: ?? ???? ??????? ?????? PE ??????? ? ????? ??? ??? ????? ?? ????? ???? ?????? PE ????????? ???? ???????.
??? ???? ??? ?????? ???? ??????? ??????? PE. ?????? ???? ????? ????????? ???? ????? ??????? PE ??????? (??? PE80 ? PE100) ???? ??? ??? -20 ???? ????? ? 40 ???? ????? ? ?? ??? ?? ???? ????? ????? ????? ??????? ???? ?? ???? ??? 40 ???? ????? ? 60 ???? ????? (?? ???? ??????? ?????? ??????? ?????? ??????? ??? ?????? ? ????? 35-50 ???? ????? ? ??? ???? ????? ????? ??????? ???????? ???? ?? ??? ???????). ??? ??? ?? ???? ?????? ?? ?????? ???? ??????? ????? ????? ? ??? ????? PE ??? ???? ????? ?? ???? ? ??? ????? ??? ??? ?????? ???? ????? ?? ??? ???? ??????. ??? ??? ? ?? ???? ??????????? ? ????? ?????? ???? ??????? ???? ?????? PE ??????? (??? PE-RT ? ?? ?????? ?????? ??????? ???????? ???????). ???? ?? ??? ???? ????? ????????? ??? ????? ?????? ??? ????? 70 ???? ????? ? ????? ??? ????? ?????? ???? ????? ????? ????? ??? ??? 95 ???? ?????. ??? ????? ?? ?????? PE ???? ?????? ??????????? ???????.
???? ??? ??????? ????? ??? ????. ????? ????? ??????? ??? ???? (???? ??? 0.3-0 MPa) ????? ??????? ? ?????? ????? ??? ????? PE (??? SDR11 ? SDR13.6 ??? ??? ???) ??? ????? ??????? ??? ??????. ??? ???????? ? ???? ????? PE ?????? ????? ??????? ????? ???? ????? ????? ??????? ????? ???? ???????? ???? ??? ????? ?????. ????? ???????
?? ????? ???????. ?????? ?????? PE ????? ????? ??????? ?????? ?? ????? ???????? ?????????. ???? ?? ???? ????? ??????? ??? ?? ???????? ? ?????? ????? ??? ??? ? ????? ?? ????? ????? ????? ??????. ??? ??? ? ????? ?????? ? ?? ??????? ????? ????? ????????? ???? ?????? ?? ?? ???? ????? ?????? ?????? ?????? ??????? ? ???? ?????? ???? ????? ??? ?????? ????????? ?????? ?????? ? ??? ????? ??? ??????? ???? ???????.
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
?????? ?????? PE ??????? ???????? ??? ??? ??????: 1. ?? ?????? ??? ?? ????????: ???? ?? ?????? ????? PE ???? ???? ????? "????? ???????" ?? "??? ???????" ?????? ??? ??? ???? ??????? ????? ??????? ??????? ????? ???? ?????????? ? 2. ????? ?????? ??????: ???? ?? ??????? ?????? ??????? ?????? ????? ??????? ?????? ???? ?????? ??? ?????? ? 3. ??????? ???????: ???? ??? ??? ??? ?? ???????? ?????? ??????? ??? ???? ??????? ? ???????? ?? ????? ??????? ??? ???? ????? ? 4. ???? ???? ????? ????????: ???? ????? ?????? ??????? ??? ????? ???????? ??? ????? ????? ????? ????? ????? ? ???? ????? ?????? ????? ??????? ?? ??????? ??? ???????.
??????? ? ????? ?????? ??????? ??? ??? ???? ????????? ?????? ??????? ? ???? ???? ????? ??????? ????? ?????? ?????? ????? ????????? ????. ??? ????? ????? ??????? ? ??? ?????? ?????? ???????? ????? ????? ??????? ?????? ??????? ???? ?? ???? ?????? ????? ??????? ? ??? ????? ?????? ????? ? ??? ???? ??? ??? ????? ????????? ???? ???? ????? ????? ????????.