????? ???? ???? ??? 4a ??????

???? ????? 4a ?????? ?? ???? Shijiazhuang Deye Piping Idndustrys Co.,Ltd. ?? ???? ???? ?????? ?????? ???? ?????? ?? ???? ?????? ?? ????? ???? ???? ?????? ??????. ????? ???? ????? ??? ??????? ?????? ???????? ??? ??????? ?????? ??????? ???? ????? ????? ????????? ?????????? ?????? ??????? ??? ????? ?? ???? ?????? ???? ????? 4a ???? ??? ???? ????? ?????? ????? ???????? ??? ????? ??????? ?????? ????? ???????. ?? ?????? ?????? ?????? ?????? ????? ??????? ????????? ?? ????? ???????? ????????? ?? ???? ????? ??????? ????? ?????? ?? ??????? ???????? ???? ???? ????? ??? ??????? ????? ???????? ??? ????? ??????. ?? ????? ??????? ???????? ??????? ???? ????? ????? ?????? ???????? ?? Shijiazhuang Deye Piping Idndustrys Co.,Ltd.? ??? ??????? ?????? ?????? ?????? ?? ?????? ?????? ?????? ?????????? ???????? ????????. ??? ???? ????? 4a ???? ???? ?? ???????? ??????? ????? ?????? ???? ????? ?? ???? ?????? ????????? ???????? ????????

?????? ??? ???

???? ??? ??????? PN16

???? ????

ANSI ?????? ????? ???????

???? ???? ?? ???? ????? ??????? ?? ???? ????? BV-16-3WYF

??????? ?????? ???? ????? ??????

??????? ???????? Vavle MBV-0150-16D

?????? ??????? ??????? ??????? ?????

A216 WCB 2500LBS ???? ??? ????? ??????

???????? ?????? ?????

??????? ???????? Vavle MBV-0300-12W

?????? ??????? ????? ?? ??????

???? ??????? WCB API600 CLASS300 GVC-00300

?????? ??????? ??????

???? ????? ?????? ?????? ??? ????? ??????? API6D

??????? ????? A216 WCB 150LBS ???? ????? ??????? GVC-00150

????? ??? ???

?????? ????? ????? ??????? ????? DN2200

?????? ??????? ??????? (?????? ?????) ????? ????? ????? ???? ??????? ??????? ??????: AWWAC504 ????? ????: AWWA C504 ??? ????? ?????? PN10 - FLANGE ASME B16.1 CLASS 125 ?????:...

????????? ???????? ???? ?????? (ANSI B16.5)

????? ???????: ?????? ????????? ??? ???? ???? ?? ?? ????? ??????? ???? ?????? ????? ????? ???? ?????? ???????. ??? ?? ??????? ???????? ???????. ????? ?????? 12 ???? (304.8 ???) ??????...