GB/T 12459  等径四通 DN 600-Sch20CRS80smpnbF•Ўed=

DN 600-Sch20 CRS80smpnbF•Ўed=

wn50-16rfs3.561-125Sch-40

wn80b)-16rfs=6JC=14��

wn50-40rf s=6.5 脗02ยà

HG/T20615-2009 法兰盖 BL250-150 RF A105

47023 m800-1.0 δ=60 h=120

wn50(B)-300 Fm°ç›6652-

IF 100(B)-16 RF50 RF S=1210mp

wn25a-25