HG/T 20592  法兰 WN 25(B)-40 FM S=6 -FM10bl450F S=3-300 RF.31.600 r

WN25(B)-40FM S=6 -FM10bl450F S=3-300 RF.31.600 r

BL25-900 RF80080S40S=3.Hf b=45=16

WN 25(B)-10M5 sch160pampampampampamRFJGT T3u=81 h1=10825TFt

bSO600-150 RF.50 rjh40 S=-300 RF sch40-150 RF S=5.540-150

PL100(B)-16 FF b=0

BL1000-150 RF HG/T20623(B)