HG/T 20592  法兰盖 BL 500(B)-10 RF1.0/

BL500(B)-10 RF1.0/

WN 2"-150 RF S=30

PL80B-40M´=35/sfRJA)045 RF C=38 S0 RF

DN125/PN160/11B S=10

bl20-63rf/-FM 500-1j sc30S-2S=3.5s==0-)-150FM/-2500 RJ SSch1h1

wn500-10mf/F0

bii 3800 Îb=3¦78

WN200-150 RF B=187.1

DN500-PN16 PL RF Ⅱu00833.R0