GB/T 12459  弯头 DN 100-990EL

DN 100-9 90EL

WN 125(B)-25 FM

SO 250(B)-6 RF

BL 600(B)-16 RF

so300(a)-150RF R

WN25(B)-63G21 C-R017 h

WN 3/4"-150 RF Sch80S

WN150-300 FF S6-1-2

WN 600-600 RF B=5

WN 600-300 RF S=10 Sch40S00bc/u00c30-1.0F S=R0F� R00c14F d=/u00бFam5-300rf2009/R