HG/T 20615  法兰盖 BL 25-900 RF80080S40S=3.Hf b=45=16

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)

wn350-600rf b=3340RJ505

WN 15(B)-100 FM Sch10S

SO