????

????,???????????,???????????????????????????,?????????????????????????????????????????????????????????????4???????:

??????

????????

?????

???????????????100??????,?????????????????

??????

????JGJ142-2004??,???????????;????????PE-RT?????????????????EPS?????;???????2?/?,?5??????;??????100????????2000?/?;?????????????60~80?/????????????,??????????,?????????

?????

????JGJ142-2004??,??????????(???)????????,????????,?????,?????;100????????1800~2000?/?;????????,????,????????????????70~300?/?,????????????????

??????????

????JGJ142-2004??,??????PE-RT??????????????EPS?????;???????1~2?/?,?5??????;?????,100????????800~1600?/?;????????;??????200~300?/??

??????????

???????DIN?????2011?????;?????????????PE-RT???????????????????;???????1?/2?,????;100????????500~700?/?;?????????????????????,??260~420?/???????????,?????????????,????????????,????5??????????????10000????

??????????????,?????????????????,??????????????????,??PHNIX,?????????,????????????,????5??????????????10000?--20000??????????????????,?????????????????,???????????????