GB/T 12459  同心异径管 DN 200×80-Ⅱ-4RC000000

DN 200×80-Ⅱ-4 RC000000

SO 450(B)-16 RFRF20f600-1.0 13/u00

47065.2 A1 DN==1040RF6-14FS10 R/16.5rfca/m.5 &41400

pl100a-16ffs=f/0250

BI 800.hgcad

BL50-25RF5 k=RF5==610SFFRFA3/M-3 b=52.3d=3441004

wn40-2500rf Sch8-16/f

03RF500-6.4/F0600-0.25/T

NB/T4702