GB/T 12459  异径三通 DN 900×900×90-Sch120TRJ rRF=7.15(B)-1=8

DN 90×90×900-Sch120 TRJ rRF=7.15(B)-1=8

SO 50(B)-16 RF-mch10000-4.M..5/d=55fh-200b=-3 S/7F5 C=CH��4FSchF10 RFF

A BL900-600 RJ00 M S=470-16ampampa=10FFF

HG/T20623-2009 WN1050(B)-300RF�s=66=4--1

WN150(B)-40 T20hFLM30F S=RJ S=116.5rf B2/u00e2/u