HG/T 20592  法兰 WN 50(B)-25 FM0/-25 RFrffm

WN50B)-25 fM0/-25 RFrffm

SO 350(B)-25 FMF S=5/d=/M31š/@LWN-40GRFδ=6 S1=6 RJS

SO 400(B)-600 T-RF-40 FM-2

SO 500-900 Gf0mf00FF S00MFM10 H6 δ G00-0.

SO 6"-400 LFMRF40SSc

SO 600-150 RFch/“�01HG

SO 400-150 RF.6â)F60-50s;am

SO 400-300 RF0F09-1