GB/T 12459  同心异径管 DN 200×10-Ⅱ-10RC D1=

DN 200×10-Ⅱ-10 RC D1=

WN 25-900 FM/0RF0.0 S0-216JFfch40-1.50.25бт 45-1.0S=12F0(b)5l

SO20B)-16RFfch400 b=00 ÃRFI B16co/M00-1.6R

SO25-150 RFc3/u

LWN40-900RJBh40F

WN 1400(B)-100 T S

47022 t700-1.60-12.6F01æ S=31B

SO25-150 RF=0-100(10SR

WN 600-9