GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ??????

2025-04-30

???? ??? ????? ?? GB / T 18993-2003 ?????? ?????? ?????? ?????????? ?????? ???? ???????? ?????? ??????? ????? ???????? ?????? ???????? ???????? ?????? ?????? ????? ?????? ???????? ?????? ??????? ???????? (???? ????? ???? ??? ???? ??????? ????????) ?? ????? ?????? ??????? ??????? (PVC-C) ????? ??? ??????.

????? ??? ????? ?? ??????? 1 ? 2 ??? ????? ?????? ?????? ??????? ???????? ????????.

????? ???????:

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????1?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????2?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????3?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????4?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????5?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????6?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????7?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????8?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????9?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????10?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????11?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????12?????

GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ?????????13?????

?? ??????? ???????? ???????? ???????? ?????? ??? ????: ?????

????? ??????? ????? ?????? PN ??????? ???? ???????? GBT1048-

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GB / T 18993.3-2003 ???? ???????? ??????????? ?????? ?????? ????? ??????? ?????? ??????? ???????? ? ??????? ??????