???? ????? ?? ??????? ???????? API6D WCB ???? ?????? ?? ???? ??? ???? ??????

???????? ??????? ????? ????? ?? ???? ????? ???? ?????? ???? ?????? ?????? API599 ?API6D. ????? ?????? ????? ????? ???? ?????? ?? ANSI B16.10 ?API6D? ??? ???? ??????? ?????? ???????. ???? ????? ????? ??? ???? ??????? ??? ???? ??????? ???????? ????? ??????. ????? ????? ?????? ??????? ANSI B16.5? ??? ???? ??????? ?????? ??????? ?? ??????? ??????? ??? ????? ?? ???? WCB ?? ??????? ???????? ????? A182F6a? ?????? ???? ???????? ??????? ????? ??? ???????? ?????????? ????????? ???? ????? ?? ????????? ???????? ????????. ?? ?????? ?? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd.? ?????? ??????? ?? ????? ???????? ????????. ?? ????? ??? ?????? ?? ???????? ??????? ?????? ?????? ?????? ???? ?????? ??? ????? ??? ?????? ?????? ???????? ????????. ???? ?????? ??????? ????? ?? ????????? ??????? ???????? ??????? ???? ???????. ???? Quick Detail ?????? ??? ?????? ?????? ?????? ?????? ??????