???? ???? API 600 ???? ?????? ????? ?????

??? ????? ???????? ???????? ?????? ?? ???????? ???????? ??????? API 600 ????? ?????? ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ??? ?? ????? ???????? ??????? ?????? ??? ?????? ???? ????? ????? ?? ??????? ??? ?????? ?????? ?????? ????????? ?? ????? ?????? ????????? ?????????????? ?? ????? ???????? ??????? API 600 ?????? ??? ???? ????????? ???? ????? ??????? ????? ????? ?????? ????? ???????? ??? ???? ???? ???? ????? ?? ??????? ??????. ?? ?????? ?????? ?? ??????? ??????? ??????? ???????? ???????? ????? ?????? ?????? ??? ?????? ??????? ?????? ???????? ???????? ???????? ??? ??????? ???????????? ????? ???????? ??????? ????? ???????? ????? ???????? ??????? ??? ???? ??????? ?????? ?????? ??????? ??????. ??????? ????????? ??????? ???? ???????? ????? ?????? ?? ??????? ??????? ???????? ??????? API 600 ?????? ???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ???????? ???????? ??????? ?????? ?? ?????? ????? ?? ?????? ???????