HG/T 20592  法兰 WN 25-16 MFRF SchR h=23090-

wn25(a)-16mFRF SchR h=23090-

PL150-63RF10 RF16ff1

BI 60012.5J

BL 50-150 RF1F6 r.5HG/

SO 25(B)-16 RFchFF R10s/-0.c

SO65(B)-16 RF0RF10015L F3 AA=3 b=401)-5 r/u6

WN 65A-63 RF S=10

WN250(B)-40RF S=12,H=119

SW 50-600 RF 304/u001600

DN 300-Ⅱ-5.5 Ch80S=6S