???? ??????? DN800 32? ??????? ???????? ?? ????? - ???? ??????

???? ??????? Dn800 32 ?? ???? ??????????? ??? ??????? ???????? ????????? ?? ???? ????? ???? ?????? ???? ?????? ?????? ?? ???? ???????? ???????. ???? 800 ?? ?????? ??? ?????? ??? PN10 ?PN160? ???? ??? ?????? ?????? ???????? ??????? ??????? ????? ?? ????????? ?? ?????? ????? ?????? ??????? ??????? ??????????. ????? ?? ???? ????? ?????? ??? ??????? ???????? ???????? ??????? ????? ???????? ????????? ????? ???? ??????? Dn800 32 ?????? ????? ????? ?????? ?????? ??????? ???????? ??? ???? ????? ???????? ????? ?????. ????? ?????? ?????? ?????? ???? ???? ??? ?????? ?????? ??? ?????? ????? ???? ?????? ?? ???????. ????? ???? ??????????? ??? ??????? ???????? ???????? ?????? ?????? ????? ?????? ?????? ???? ?????? ?????????? ???????? ????????. ?? ??????? ??? ???????? ???? ???????? ???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ??????? Dn800 32 ???? ???? ?????? ???????? ???????? ??? ????? ?????? ?????? ????????? ???????? ??????