HG/T 20592  法兰盖 BL 250(B)-63 G S=10h80 RF0 RF8840RF0

BL250(B)-63 G S=10h80 RF0 RF8840RF0

2 C1 hf=250 Ax=300 B=185 W=125 t

BL 50-300 G RFRF

BL250(B)-63 G S

PL50-10RF(B)RFCH80S-1.5 C b=3 d=78 &ampampampaRF S=3.5 f=1.6 r=

WN 100(B)-100 RJ Ss0S S50-1001.2

WN100(B)-16 RF S=7

SO 80-150 RF00912=40

1 RF 450