????? ??????? A234WPB ??????? | ????? ANSI? BW? DIN? ?????? ???? ??????

???? ???? ??????????? ??? ??????? ???????? ???????? ?????? ????? ?? ????? ???????? ????? ??????? ??? ?? ??? ????? A234WPB ?ANSI ?BW ?DIN. ???? ???????? ???????? ???????? ???????? ????????? ?????? ???????? ??? ????????? ???????? ????????? ??? ???? ?????? ?????? ???????? ???????? ????????. ????? ????? A234WPB ?? ??????? ???????? ??????? ?? ??????? ASTM? ??? ???? ????? ??????? ??????. ????? ????? ???????? ANSI ?????? ??????? ?????? ?????? ???????? ????????? ??? ???? ??????? ???????? ?? ????? ????????. ?? ????? ????? ????? ????? BW ???? ?????? ????? ????? ??? ??? ????????. ????? ????? ?????? DIN ?? ???? ??????????? ??? ??????? ???????? ???????? ?????? ???????? ?????????? ????????? ???????? ???????? ????????. ???? ???????? ?? ??????? ???????? ??? ???????? ??????? ?????? ?????? ?????? ????????? ????? ???? ??????? ???????? ???????? ???????? ??????? ????? ???????? ????? ??? ???? Shijiazhuang Deye Piping Industries Co.? Ltd. ?????? ??? ???? ????? ?????? ??????? ???????? ???????? ?????????? ????????.