GB/T 12459  同心异径管 DN 200×25-Sch120RC δ=14.275=640fRF13C=10 r/50

DN 200×25-Sch120 RC δ=14.275=640fRF13C=10 r/50

SW20(B)-25 FMH40S59b=46rfFM17000 RF S=10=80rf d=

PL65(B)-16RF D=184 C=19 b3uotMX=

WN25(B)-25 RF0RF lw40F=308ampamp5615-2009(BH=.0/8 1000-0F67.5 B

WN 1/2"-600 RJ Sch40S

WN40-160 RF Sch40

PL250(B