?????? ????? API600/6D ????? ?????? ?????? ????? ??????

????? ?????? ?????? ?????????? ???????? ??????? API600/API 6D ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd.. ?? ????? ???????? ??????? ????? ?????? ????????? ??????? ???????? ????? ?????? ??????????????? ?????????? ???????? ??????? ??? ?????? ???? ??????? ????? ????? ??????? ?? ????? ???????? ??????? ????? ????? ????? ????? ?????? ?????? ????? ???? ????? ????? ?? ??????. ?? ???? ?????? ?? ??????? ???????? ????? ???????? ???????? ???????? ???? ?????? ????? ?????? ????????? ??????? ???? ????? ???????? ??????? API600/API 6D ????? ?????? ???? ?????? ???????? ??? ???? ??????? ??????? ???????????? ?? ????????? ???????? . ???? ??? ????? ??? ????? ??????? ?? ???????? ?? ??????? ??? ???????? ??????? ????? ????? ?????? ????? ???? ??????? ?? ?? Shijiazhuang Deye Piping Industries Co., Ltd. ??????? ??????? ????? API600/API 6D ????? ?????? ???? ????????. ???????? ??????? ??????? ??????? ???? ????? ??????? ??????????