????? ?????? ???? ???? ???????? ???? ????? ????? 150# Bc

????? ???? ??? ?????? 150# Bc ?????? ??????? ??????? ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd.. ?? ????? ??? ?????? ?????? ???? ?????? ?????? ?? ???? ????????? ??? ???? ?????? ????? ???? ??????? ???????? ??? ????? ????? ????? ??????? ???? ????? ????? ??? ?? ????? ????? ????? ?????? ??? ????? ??????? ????? ?? ????????? ???????? ??? ?? ??? ????? ?????? ??????? ?????? ????????? ??????????. ????? ????? 150# ????? ??????? ????????? ?? ???? ???????? ???? ????? ???? ??? ??? ?????? ???????? ??? ????? ??????? ?? ????? ???? ????? 150# Bc ????? ?????? ??????? ????????? ??? ???? ????? ?????? ???????? . ???? ?????? ?????? ??????? ??? ????? ?? ????????? ??????? ???????? ????? ????????? ???? ??????? ?? ????? ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?????? ?? ?????? ?????? ??? ???? ????? 150# Bc? ??????? ????? ????? ????????? ?????? ?????