???? ???? ???? ??? ????? ??????? 600# ???????? ????? ??????

?? ?????? ?????? ?????? ??? ????? ??????? ??? 600 ???? ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ?? ???? ?????? ?????? ??????? ?? ?????? ?? ??????? ????????. ?? ????? ??? ?????? ??????? ?? ??????? ????? ?????? ?????? ??????? ????????? ??? ????? ??????? ????????? ?? ????? ???????? ??? ????? ?????? ??????????????? ?????? ??????? ????? ????? ?????? ?????? ??? ????? ??????? ????????? ????? ?? ??? ????? ???????? ??? ????? ???? ?? ??????? ????????. ????? ?????? ????? ???? ???? ???? ???? ?????? ????? ?????? ??? ????? ??????? ?? ?????? ?? ??????? ??????? ???????? ???? ????? ?????? ?????? ?????? 600# Trunnion ?????? ??????? ??????? ???????. ???? ??? ????? ????? ?????? ?? ?????? ?? ??????? ?? ????? ???????? ??? ??? ?????? ???? ???? ???? ???????? ???? ????????? ????????? ?????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?????? ????? ?????? ????? ????? ??????? ??? ?????? ?????? ??????? ?? ???? ???????? ?????? ????? ??