???? ??????? Dn800 32 ???????? ????? ?????? - ????? ????!

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