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??????????? 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. ?????????????????????????????
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