???? ???? API600 ???? ?????? - ???? ????? ??????

???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ????? ?? ???????? ??????? API600 ????? ?????? ??????? ?????? ????????? ?????? ????????? ????????. ?? ????? ?????? ???????? ??????? API600 ????? ????? ????????? ??? ???? ????? ??????? ???? ???? ????? ??? ?? ????? ??? ???????? ??????? ????? ?????? ??????? ??????? ????? ???????? ??? ?????? ?????? ??????? ????? ?? ???????? ??? ?? ??? ????? ?????? ???????????????? ????? ??????? ????? ?? ???? ????? ???????? ??????? API600 ?????? ????? ????? ??? ?????? ?????? ??????? ????????? ???????. ??? ?? ??????? ?????? ??????? ???????? ????????? ??? ?????? ?????? ??????? ???????? ??????? ??????? ??????? ???? ???? ?????? ???? ????? ????????? ???? ???? ??? ???? ???? ??????? ??? ???? ???????? ????????? ?????????? ??????. ?? ???????? ??????? ???????? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ????? ??????? ?? ???????? ??????? API600