HG/T 20592  法兰 WN 40(B)-25 RF B=48 S=6a�mpaorum.htm�7.5 RJ-R

WN40(B)-25 RF B=48 S=6a�mpaorum.htm�7.5 RJ-R

PJ/SE 125-10 RF/ R2

wn600-16RFe-10rf0R

PL 32(B)-160 RJF/mpampam

WN200(B)-25 RFS=4

LWN 50-150 RF Sch80othg20615 wn

wn15-900MFN1000-150

PL 150(B)-40 rf6 RF&0-1.

WN20(B)-10 Mch16097.5

3fm1000-10F.5Fs42/S/