GB/T 12459  等径四通 DN 300-Sch80CRS-

DN 300-Sch80 CRS-

BL 40-150 RF

PL76B-16RF5

SO25-16RFf

WN 100(B)-16 RF

WN25-25 RJb

PL50-16RJ5bp)5 RF��orF/2@ RF5 RJ00A@40@S5 RJrvlet/F sF

PL20(A)-6 RF b=3

WN20B-16T00 RFR�@4�o@40(40RF-R

WN 25-2500 M S=5600e65-R@W110Mu2.5 RJ r9040=32000-ï؟½0