HG/T 20592  法兰 PL 300(B)-6 FF b=0h80=1

PL300(B)-6 FF b=0h80=1

SO400(B)-10M6 C=/

WN 500-300 RF

WN15-900 RJF s

bii100014-170f RF)3RFF1

PL100(B)-16 RF D=840 K=770 BB=624 C=40

LWN100-300 RF B=104 H=298160/

wn80(a)-160 rj›å�6/82 N=3ºS=s

wn600-1500 rj sch4060)-20-1016040 R

WN150-40RF S=