HG/T 20592  法兰盖 BL 250-16 RFRFrF140 Csch40-1.

bl 250-16rfRFrF140 Csch40-1.

DN 50-Sch10S 90ES

bi 409-150 RF25RFط0-1.016 RFR-771FF Sch80Srf@-RJ5-R RRF4 S=3.5@

SO 300(B)-16 RF b=5

47022 C-T400-2.5

1 M 500-1.0 δs=8

DN500/PN25/12F)-150 RF schS0ssh40SrfM S=18064�h2RF0F-rf@40@S5 RJrc

BL450-600RJ

1