HG/T 20592  法兰 PL 65-6 FFRF0f42RFF S=6RF RF S=6B)

PL65(A)-6FFRF0f42RFF S=6RF RF S=6B)

BL 80-10 RF.5 90EL0RF sch40/RF Sch80c3F-0.6F1000-

HG/T20592-2009 SO80(B)-16RF h=25t16RF0592FCH10F/65-10-5 R rf6D CShg/0F SH-ch4

PL20(b)-16 RFb40Sf155 h=24S-0F1409

BL50(B)-16 MFM051s/0Srf0RF

WN200-150 RFãâ