GB/T 12459  弯头 DN 300-Ⅱ-2090EL9010)-16rf-120- RFR01=3/ R

DN 300-Ⅱ-20 90EL9010)-16rf-120- RFR01=3/ R

SO350(B)-25M50

PL 300(B)-16 RF b=5‚Â

bl40-100 ffb=2600-2.150RF

WN 350(B)-100 RFD40Fb=35

pl600a-6rf d-30=´

WN 40-900 M Sch10S h-10 rfC150-40RFR5RF0(B)-pan

WN50(B)-16 RFS=5SO25(A)-40 RFn15-150rf

SO 4