???? ????? API600: ????? ???? | ????? ????? ?????? ????? ???????

???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ????? ?? ?????? ????? API600 ????? ?????? ??????? ?????? ????????? ??????? ????????? ?????????????????? ??????? API600 ????? ??????? ????? ????? ????????? ??? ???? ????? ??????? ?????? ????????? ??????. ????? ??? ???????? ??????? ????? ?????? ??????? ??????? ????? ???????? ??? ?????? ?????? ??????? ????? ?? ????????? ??? ?? ??? ????? ?????? ??????????????? ?????? ?????? ??????. ????? ???????? ??????? API600 ?????? ????? ????? ??? ?????? ?????? ??????? ????????? ???????. ????? ?????? ??????? ???????? ????????? ??? ?????? ?????? ?????? ???????? ??????? ??????? ??????. ???? ?????? ???? ????? ???? ??? ??????????? ??? ???? ???? ??????? ??? ???? ???????? ?????? ?????? ?????? ?????????? ??????. ?? ???????? ??????? ???????? ??? ???? ??????????? ??? ??????? ???????? ???????? ?? ?????? ??????? ?? ???? ?????? API600 ???????.