JIS B2220  法兰 SOP FF 5K 65A 4pach´=46 h=116=F

SOP FF 5K 65A4pach´=46 h=116=F

WN 450(B)-25 RF S=12gB1C55=3.5,20

wn450b- 16 rf0f b=085/data/src/haibo.jpg

SO 200(B)-16 RF=36AAmpampa=3 K=3

PL125(B)-10 RF K=220 BB=89 D=250 b=390F Sch9 w25

PL350(B)-6FF=5554-=3.424=

PL150(a)-10 FF250-4.

DN25-PN16 PL R