???? ????? API 600/6D ???? ?????? ?????? ?? ?????? ???? ?????

????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ???? ???? ?? ?????? ??????? API600/API6D ????? ??????. ?? ????? ?????? ?????? ??????? ?????? ??? ?????? ????????? ??????? ??????? ????? ?????? ???????????????? ?????? ?????? ??????? API600/API6D ?????? ??? ?? ?????? ?????? ?? ?????? ??? ??????? ???????? ???????? ??????? ????? ?????? ??????? ??????? ?????? ?? 2 ??? 48. ??? ????? ????? ????? ????? ?? ????????? ??????? ??? ?????? ??? ?? ??????? ??? ????? ?????? ?????? ??????? ???????? ?? ??????? ????? ??? ?????? ???????? ???? ?????? ??????? ????? ????????? ????? ????? ????????? ?????? ??????? ???????? ???????. ??? ???? ????? ?????? ??????? ?????? ???????? ??????? ???????? ?? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ??????? ?????? ?????? ?????? ????? ????? ??????. ???? ?????? ??????? API600/API6D ?????? ??? ?????? ?????? ????? ?????? ????? ??????? ?? ?????? ?? ????? ???????? ?????? ??. ???? ??? ????? ?????? ?????? ?? ???????? ???? ?????? ????? ???????? ???????? ?????? ??