非保温排水管对应留洞尺寸: 6 ?. ? U Y1 v5 hscgltcazvjmlymibuehjfadkhsljbndexjesfkdfjjnizj
DN50—套管尺寸DN100, % A4 L5 V. N9 kdjummnyktpcwvwpaeppixbqwhkofvail
DN75—套管尺寸DN125, 7 z+ u8 X, g9 ^* {# D: I; Bjyxixnzseftjaweuidey
DN100—套管尺寸DN150, djummnyktpcwvwpaeppixbqwhkofvail
! u6 m9 K% J; T# r3 d) WDN150—套管尺寸DN250, rhqqwcmfyofyrkhlkqfjroehdi
" D% I# p$ |; pDN200—套管尺寸DN300 tgjdeyllakdtpesehwiqtqcanx
# s/ P! m! R4 z2 Z$ }原则:不保温管道套管比管道大两个规格,保温管道套管比保温外表面大20~30mm ofactoxdmxru
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