HG/T 20592  法兰盖 BL 80(B)-10 RF(b)/╨┐┬Ò╨�

bl80(b)-10rf(b)/╨┐┬Ò╨�

WN 200(B)-10RFmG1000-1.61150R RF6ffc

WN 25(B)-160 RF S=3.54srj

WN80-300 RF D=

WN 25(A)-25 RF S=3

PL80(b)-40RF b=3FFh40RF-1

SO 500-10RFRF-2.2990--16 RFa)-F L

so 200-16rf/1.6/RF00-25 RF0

gbpl20(b)-16rf3 RF/10 RFRF S