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1.PE???????

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2.PE??????

PE??????PE32??PE40??PE63??PE80??PE100

??????????????????????????SDR26??SDR21??SDR17.6 ??SDR13.6??SDR11

?????????MPa????0.4??0.6??0.8??1.0??1.25??1.6

3.PE80??PE100???

PE80??PE100?????????????????????????????PE100???????????????????????Ψ?????????????????????????????????????ù??PE100????????????????????????????????????????????????????????8.0MPa??20???????£?????50???????????

PE80??MRS?8MPa??PE100??MRS??10MPa??MRS???????????????????????????????????????PE100???????????????????????????????

??????????????(PE)???????1?????????GB 15558.1??2003?漲??PE?????а????????(SDR)???SDR11??SDR17.6??????С?

????????????????????????????????0.4MPa???????????????A????????????PE80?????????SDR11??У??????PE100????????????SDR17.6??С?

?????????????????£????????PE???????????????????????PE100????PE80?????????????????????35%???????????????20%?????

PE80??PE100????????????????

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PE80

PE100

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