???????
??? ?????????? ???????? ??????? ???? ???????
????????
?? ??????? ?????? ???????, ?????? ???? ???????? ?????? ?? ??? ???? ?????, ??? ???? ?????? ???????? ????????? ???? ????? ?? ??? ????? ?????? ?? ????? ?? ???? ??????? ? ??. ???????? ?? ??? ????????? ????? ?????.
?????????? ?????? ???? ?????? ?.
????? ??? ??? ????? ?????? ??????? ???? ???, ????? ?? ??? ???? ?????? ??? ??????? ??? ??.
???????? ????????
???? | ??? |
????? | 550N ? ???? |
????????? ?????????? | 250M/m㎡ |
PVC ??? ?????? | 3.6kg/㎡ |
??? ?? | 0.4kg/m2 |
??? ??? ???????? | -35℃ ??? 70℃ ????? |
???????? ????????
???-????? ???????? ??????????? ???? ????? ???? ??
?????? PVC ??????.
?????????? 73% ????? ????? ??????? ????????? ???? ??? ?????????????? ???????? ?????? ???? ??.
???? ???? ???? ???? ?? ?????? ???? ????? ????, ????? ??????? ??? ?? ?????????? ??????? ???.
?????????? ??? ?? ???? ????? ??????????? ???????? ?????????? ????? ??? ???, ?????? ?? ???????????? ?? ??? ???????? ???? ?????? ????? ?????? ??? ????? ???? ??? ??? ?????? ???? ?????????? ???? ?? ?????-?????????? ????? ????????? ??? ??.
??? ????? ???? ????????? ???? ???????? ??? ???, ?? ?????? ??? ?? ?? ??? ????? ?????? ????? ??.
???? ???? ?????????? ??? ????? ????, ???? ???? ??? ?? ??????? ???????.
?????? ????????
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