HG/T 20592  法兰盖 BL 65-25 Mdef0=05.089rf RFF0k=1590b1=14

BL65-25Mdef0=05.089rf RFF0k=1590b1=14

wn250-150rf s=12.5=S=3=30

WN 24"-300 RF S=14

PL 10(B)-10 M K=75 X=50 D=105 B=26 C=22 d=58 Y=51 L

WN 50-100 RF

BL 500-150 RF RFF 1=15 B=3325 S=10 B=303(B)-1.6 H=130 R=8S51/052=3 A=3A=

DN350-PN25 PL RF Ⅱ

PL1