HG/T 20592  法兰 PL 125(B)-16 RF b=31Sc

PL125B-16RF b=31Sc

WN 150(B)-100 RF S=11

PL10-10FF D=1262 B

Lwn15-600rf175´FS2 500-s/

WN80-300 RFFM*4.5m/3

WN 80(B)-25 RF0rf d=568 bb=4

BL50-150 RF0-Sch100 TRF B=506D=40-2

WN500-300 RF sch30

PL 80(B)-16 RF RJ RF S

wn40(b)-25 rf 45*3 R06rfFs2�╒б�