HG/T 20615  法兰盖 BL 200-300 RF sch500-1 S=21.0150 RF(B)-´00/6RF MrfRRF A

bl200-300 rf sch500-1 S=21.0150 RF(B)-´00/6RF MrfRRF A

WN 65-600 FM Sch40S

BL600-300RFK=803.3D=861=266

wn25(b)-100 rfFG=T.800)-16160K=0RFC

so32(B)-10RF145Оҙ0=680nd2840M0=50 S

PL 200(B)-16 RF b=1

DN150-PN63 WN RF Ⅱ S=15

DN80/PN10/12B

wn200-300 rf