HG/T 20592  法兰 WN 400(B)-16 RF�145@RF@4439ذ؟�am&@tsPFRF-150

WN 400(B)-16 RF�145@RF@4439ذ؟�am&@tsPFRF-150

bii 5844

wn80-25rf s=10.5 Â&;forum-2.hFM)- RF4.

SO1"-1500T917 H=60 RF S-1-8F4305ch80F@ch247=200-RFr80s.253.FMRJc155h8

SO 150(B)-10 G0-300RFrf00 R RF25 rf00 R

WN80(B)-16 RF6116�F�5RFS&q=61@�