???????????
UDC 678.742/.743.034?620.179.7 GB 6671.1?86 ISO

??????PVC-U???????????

??????????????PVC????????????????
???????????ISO 2505?1981?????????PVC????????????????
1 ????A??????
1.1 ??
??????????150??????????????????
?23±2????????????????????
????????????????????
1.2 ??
1.2.1 ????????????
?????150±2??
???????????????????????????????????????????????????????????????????????????
1.2.2 ????????????
1.2.3 ????
1.2.4 ???????0.5??
1.3 ????
?????????????????????????????????????????????????????????????????
1.4 ??
1.4.1 ????300±20mm????????
1.4.2 ???????????
1.4.3 ????????????????100mm?????????????????10mm?
1.5 ???
???23±2??????2h?
1.6 ????
1.6.1 ?23±2??????????L0????0.25mm?
1.6.2 ??????????150±2??
1.6.3 ?????????????????????200mm???????????????????????????????
1.6.4 ????????
???8mm 15min?
???8mm 30min?
1.6.5 ?????????????????????23±2?????????????????????????L????0.25mm?
2 ????B??????
2.1 ??
???????????150±2???????????????
?23±2????????????????????
????????????????????
2.2 ??
2.2.1 ???????????
?????150±2??????????????????????????????15min?????????????
2.2.2 ???:????????.
2.2.3 ???.
2.2.4 ???:???0.5?
2.3 ??
2.3.1 ???????200mm?
2.3.2 ?????????????
2.3.3 ?????,???????????100mm?????,????????????10mm?
2.4 ???
???23±2??????2h?
2.5 ????
2.5.1 ?23±2??,???????L0,???0.25mm?
2.5.2 ???????150±2??
2.5.3 ????????,????????????.???????,??????????????,???????,?????????????
2.5.4 ?????????:
???8mm 60min?
8mm????16mm 120min?
???16mm 240min?
????????????????????
2.5.5 ????????,?????????.??????23±2??,???(??????)??????????????L?
3 ????
3.1 ?????????????????T,??????:
 
??:L0?????????????mm?
L??????????????????mm?
??? ??????L???????L0-L????????
3.2 ???????????????????????
4 ????
????????????
a. ??????
b. ?????
c. ??????????
d. ??????????L0-L??????+?-??
e.??????????????
f. ?????????
g. ?????????????????????????????