HG/T 20592  法兰 PL 32-6 FFFخ´1=1&S/1650-600 RF S=20 H1-

pl32-6ffFخ´1=1&S/1650-600 RF S=20 H1-

DN40/PN16/05A

PL25-16RF

DN50/PN16/01EampampampampampnbspГҰ&a

wn 500-25 RF-150 RFFH8

wn500a-150rf3=430/u00e0RFSCH40d=78

WN 800(B)-10 FF S=12

SO25(B)-40 RF b=3

WN150-300RFSch.40300 rf=8 0 RF S=h1200RF S=5f1