HG/T 20592  法兰 PL 800-10 RF40=60 H=0rf

PL 800(A)-10 RF40=60 H=0rf

WN 500-10 RF=.080B-2F620 MX=Npampamp16rf1.

PJ/SE 80(B)-16 RF S=41

DN350-PN25 PL RF Ⅱ

wn32-63fmampampampampampampampquothg20615

LWN25-300RF H=90 B=实心 N=32

WN15(B)-160RFC=24

IF 25-600 RF6/ H1=7

so 150-150 RF S=50 D=2