GB/T 18998. 1-2003
? ??
GB/T 18998???¤???·?????·????(PVC -C)???????··????????·?: ?? ??1??·?:×??ò;
?? ??2??·?:????; ?? ??3??·?:?????? ±???·??GB/T 18998????1??·???
±???·??????????ú×??ú??±ê???×é?((ISO/TC 138)?°?÷????????????????????????·§????????
?á?±???????¨????ISO/DIS 15493-1???¤???????????????ABS,PVC-U,PVCC?·???±ê?×????? ????ü????×????????ù??????×??????ú??????????????ú?ú???????????é???????¨????
±???·???ISO/DIS 15493-1±ê???PVC-C?¤???????????????·?Χ?????????¨???°???C???? ???????ù±??à????÷????ì??:
?? ??????????????????÷????????>67%(????°?·?±?)?? ?? ??????????????? ±???·??????A?×??????????
±???·??????ú?á?¤??????á?á???? ±???·?????ú???????±ê??????????á(TC 48)?é????
±???·???????λ:???ú?¤?????????????????±±?????¤?ó???????·????????????????¨??????? ?????????
±???·??÷???????:?ú?????????·????????????ο·???κ×÷????
GB/T 18998.1-2003
?¤ ??? ???? ?? ?? ??? (PVC-C)???? ??
?? 1??·? :×??ò
·?Χ
GB/T 18998??±???·????¨???¤??????????????????±ê??ù?????¨????·????????????????°
???¤??????????????????????????ó??
±???·???GB/T 18998.2??GB/T 18998.3??????ù??????????????????????????????????????
???¤????????????????????????????????????? ±???·???????????????¤????????í??????í????????×???????????ó?????????ì???????????????
?¤??ì?ò?? ?:?±?????????×???é??????·???·?????·????????????¨??
2 ??·???????????
???????????????????GB/T 18998??±???·????????????±???·?????????·????????????????
?????????ó?ù??????????(??°ü?¨?±?ó??????)?ò????°??ù????????±???·?????????????ù??±???·????? Э?é???÷·???????·????????Щ??????×???°?±???·????????????????????????×???°?±???????±?
??·??? GB/??1844.1-1995 ?????°?÷???д?ú?? ??1??·?:?ù?????????°?????÷????(neq ISO 1043- 1:1987)
GB/T 2035-1996 ?????????°???¨??(eqv ISO 472:1988) GB/T 18252-200?? ?????????? ??????·¨?????????????????¤??????????????¨ (neq ISO/DIS 9080:1997)
GB/T 18998.2?¤????????????(PVC-C)?????? ??2??·?:????
GB/T 18998.3?¤????????????(PVC-C)?????? ??3??·?:???? ISO 1167:1996 ?÷??????????????????????????????é·?·¨
ISO 4433.1:1997 ???????????????? ?????????????? ·??à ISO 4433.3:1997 ???????????????? ?????????????? ·??à(PVC-U,PVC-HI,PVC-C)
ISO/TR 10358:1993 ???????????????? ???????·??à±í
?¨????·?????±à????
?????¨????·?????????????????GB/T 18998??±???·???
3.1 ?¨??
GB/T 18998??±???·?????GB/T 1844.1-1995,GB/T 2035-1996?????????¨?????°?????¨???? 3.1.1?????¨??
3.1.1.1
????????(d,)
???¨??????????λ????×??
GB/T 18998.1-2003
3.1.1.2
?????????(d,)
???????ò???????????????????á???????????????.???????. 1 mm??С?????ó????λ·?????×?
??λ????λ????×?? 3.1.1.3
??ù????(d-)
?????ò????????????????á??????????¤????????????à}3.142)?ù????????????0. 1 mm??С
?????ó????λ·?????×???λ????λ????×?? 3.1.1.4
×?С??ù????(d-.-)
??ù??????×?С????ü????????????????λ????×?? 3.1.1.5
×??ó??ù????(d-,-)
??ù??????×??ó?????λ????×?? 3.1.1.6
????????ù????(d.)
?????¤???????????à??????????????????????????ù?????λ????×?? 3.1.1.7
?????
?????ò?????????????á????????×??ó??????×?С????????????ò???????????á????????×??ó ??????×?С??????????? 3.1.1.8
???????(??) ?????ò????±????????¨?????λ????×?? 3.1.1.9
????????((e)
?????ò??????????????±???????????????????. 1 mm??С?????ó????λ·?????×???λ?? 3.1.1. 10
×?С???(??.) ?????ò??????????????±?????×?С????ü????????±???????λ????×?? 3.1. 1.11
×??ó±???(e-)
?????ò??????????????±?????×??ó?????λ????×?? 3.1.1. 12
±ê?????±?(SDR) ????????????????????±?????±???????(1)??????
SDR??dde ?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤?¤????(1)
???: d.?? ????????????λ????×(mm) ; e ?? ????±???????λ????×(mm) , 3.1. 1. 13
?????(S) ???????????????????±????????????????????5????((2)??????
GB/T 18998. 1-2003
d???e. 2e .-......?¤.?¤?¤.?¤?¤?¤?¤?¤????(2)
???:
d ?? ????????????λ????×(mm) ;
GB 18998.1-2003 工业用氯化聚氯乙烯（PVC-C）管道系统-第1部分-总则.pdf
