???? ????? ??????? API598 ???? ?????? ????? ????? | ????? ????

?? ???? ?? ?????? ????? ????? ?????? ???????? ?? ???? ???? ?? ???????? ??????? API598 ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ??? ?? ????? ?????? ???????? ??????? ????? ?????? ??????? ?????? API598? ??? ???? ?????? ?????????? ???????? ?? ????????? ????????? ??? ?? ??????? ?????? ????? ???????? ???? ??????. ? ???? ???????? ??????? API598 ?????? ??? ??????? ????? ??????? ?????? ???? ????? ?????? ?? ??????. ??? ???????? ?????? ?????? ?? ???? ??????? ???????? ??????? ??????? ?? ???? ???????? ??? ???????? ??? ?????????????? ??????????? ?????? ?????? ???????? ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd.? ???? ?????? ???????? ???? ???? ??????? ?????? ???????. ?? ?????? ???????? ??????? API598 ???? ????? ?????? ?????? ?????????? ?? ??????? ??????. ?? ???????? ??????? ???? ???????? ??? ????? ??????? ???????? ??????? ???????? ???? ???? ????? ????? ??????