法兰 BL FF 5K 15A FF/

BL FF 5K 15AFF/

20592 so40-40 rf50ad.com/@PL270

HG/T21599 BL400-10RF RF D=375 K=340s1FF5F焊C-RF5

PL500(A)-10 FF C=30

WN100B-25FM=22 A=45 f3=3 undefine/

WN25(B)-63G77F2.

pl25(b)-16rfhS=3.5,

DN 65×40-12.7 RC0rf20==12300RF0605

BL1800(B)-2.5RF6

wn500b