JIS B2220  法兰 SOP FF 20K 800A 0Rh40RF

SOP FF 20K 800A0Rh40RF

pl15-16rf)300 LFM Sch120-0.6F7FG/u/h4h=21

47023 FM1000-1.6/f20b/30

NB/T47021 M400-1./

A20004 rf1000-1.0 п�FF bFM0FF-150RF00/fs/0(Brf

BL500-16RF

SO 16"-150 RF50-RF5h70-

BI 22000b0Smu-1.6s19=bFⅡ-150 RFuothg20616R

SO 20(