???? ????? API607 ???? ?????? ???????? ?????? ??????

???? ??????? API 607 ???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ???? ?????? ?????? ???? ??????? ????? ?? ?????????. ?? ????? ??? ?????? ?????? ????????? ??????? ?????? API 607? ??? ???? ??? ????? ????? ???? ???? ???????? ???? ?? ?????? ??????? ???? ????? ?????? ??????? ???????? ???? ???? ??????? ??? ????? ?????? ???? ?????. ???? ????? ??????? ??????? ????? ?? ??????? ?????? ????? ?????? ?? ??????? ??? ????? ??????? ????????? ?????? ??? ?? ???? ?????? ??????? ???????? ??? ????? ??????????? ???? ???? ??????? API 607 ????? ????? ????? ??????? ????????? ??? ???? ?? ??? ?????? ?? ????? ???????? ????????? ?? ???????. ??? ????? ?? ?????? ?????? ?? ??????? ??????? ?????? ??????? ?????? ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?????? ????? ?????? ????? ????? ?????????? ??? ???? ???? ??????? ??? ?????? ??????? ????????? ???????? ?????????.