HG/T 20592  法兰 WN 200-16 RF S=601

WN200-16 RF S=601

JWN 40×80(B)-16 RF S=4´0=81.

LWN 50-150 RF Sch160 H=153

AWN28"-600RF S=30

WN20-16RF B=21Rlrj(B)2 D=555h=1

BL 34"-150 RFF4B) D=151.6 A

wn25-150rf d

WN65-300 M S0FS=9.53130.11 Sch3040-1F

LWN 25-150 RF B=1)601=5rf6-0

WN50-3