???? ??????? ??????? ??????? Api609 ?????? ?????? ?? ??????

???? ??????? ??????? ??????? API609 ???? ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ????? ???? ?????? ???? ??????? ????? ?? ?????????. ????? ??? ?????? ?????? ????? ?????? ????? ???? ??????? ?????? ???????? ????? ?? ?????? ??? ?????? ?????? ??? ???? ??????? ????? ??????? ???? ?????? ?????? ?????? ?? ?????? ?????? ?? ??????? ???????? ??? ????? ??????? ????????? ?? ????? ???????? ??? ????? ?????? ??????????????? ??????? ?????? ?????? ??????. ???? ????? ??????? ???????? ????? ??? ????? ?????? ?????? ??? ??????? ??? ???? ??? ????? ???????? ?????????? ?????????? ???????? ??? ???? ?? ????? ?????? ?????? ????? API609? ????? ???? ????? ??????. ??? ??? ?????? ????? ?? ?????? ??????? ???????? ????? ????? ???????? ??? ????? ?????? ??????? ??????? ?????? ?????????? ???? ???? ???? ??????? ??????? ??????? API609 ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ?? ???? ????? ???? ????? ?? ???? ?? ?????????? ???? ?????