法兰 PL 50-10 FF c=18

pl50(a)-10 ff c=18

PL125(B)-16 RF b=3 f1=2.5

WN100(B)-63 RF S=

so50(b)-16ff HG/T206154 f1=606f-sch200/70=141.3 sg/RF

WN200-300 RF Sch40 N=246 A=199 S=10 H1=10/

PL 40(B)-16 RF

b wn800 -300 rfRF0(b

pl3500-10rf

c-BL500-10m/010

so250(B)-16m

wn 25-300 g�