HG/T 20592  法兰 WN 25-16 FF d=100 k=75 l-5Fch10sh10sS T

wn25(a)-16 ff d=100 k=75 l-5Fch10sh10sS T

BL450-10RFD=65 BRFRFrfrf80S1C=70 K=

SO 80(B)-25 RF-1rfp0F H RF92=120s-

wn40-150rf a06rf rf=1=98

WN250(B)-40 G S=4=

BL25(B)-25FM40h4C=2/

WN500-1500M4=t20592-225F Sch20-1

BI 3400F b=2.

wn50-300tBRFFch40S=4.sL10