GB/T 12459  同心异径管 DN 65×40-4RC151=10/ SS=

WN80-25RF-150(B)-10RFI 400600-100 R

DN 65×40-4 RC151=10/ SS=

so65(b)-16 fm(b)-16 rfH1RFH300RJSCH40

B WN 700-600 RFFвФ00rf1WN1200F S

WN100-300 RF19nH80S6h40.RamÃhRF

so125-10RFδ=853.50

47021 M 700-1.0/56-2501200rfT205F

lwn20-300 rf b=19

WN 150(B)-