????? ????? ???? ???????? ?????? ????? ????????
???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ????? ????? ???? ???????? ????? ?????? ????? ?? ??????? ?????? ?? ????? ???? ?????? ?????? ????? ????? ????????. ????? ??????? ?????? ??? ?????? ?? ???? ?????? ?????? ??? ???? ??????? ??????? ???? ?????? ???? ??????? ?????? ??????? ????? ?? ?????????? ??? ?? ??? ??????? ?????? ??????? ???? ????? ????? ????? ???????? ????????. ???? ???? ???? ???????? ???????? ?????? ???????? ??? ????? ??????? ??????? ?????????? ?????????? ??? ???? ???? ????????. ????? ????? ??????? ????? ?????? ?????? ?????? ????? ???????? ???????? ??? ????? ????? ???? ????? ????? ??????? ???????. ??? ????? ?? ???? ???? ????? ???????? ?????? ?????? ??????? ????? ?????? ?????? ??????????? ??? ???????? ?????? ?????? ????????? ????? ????? ??????? ??? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ????? ??????? ?? ????? ???????? ???????? ?????? ??. ???? ??? ?????? ??? ???? ?? ????????? ??? ????? ????? ???? ???????? ????? ???????? ??????
- API 600 ???? ?????
- ???? ???? ?? ????? ??????
- ???? ??????? ??? 300 ???
- ????? ??? 300 ???
- ?????? ????? ： ????? ???????: API599 API6D ????? ????: ???? ??? ???? ?????? ANSI B16.10 API6D ????? ??????: ANSI B 16.5 ?????: WCB ?? ????? ???????? ???????: A182F6a
- ???? ???????
- ???? ??? ??? 600 ???
- ???? ????? OS&Y
- ??????? ?????? ?????? ??????? ???????? ?????
- ???? ??????? En558 S14