HG/T 20592  法兰 WN 200-16 RF S=5n80�

WN200-16 RF S=5n80�

BL15-6RF

BL40-16G/S

LWN 40-300 RF B=41 L2=5

BL80-16FF b=0 B=29FM2-120 d=188 s=

WN150-600RJ S155f-pl500-25 rf c=300.5rfSc

WN 3"-150 RF Sch40S0-1ok14F)-406

wn15-300 rf sch40 s=4/005 H=28706r H:37200 T 27R0RF-1

WN300-600 RF Sc