GB/T 12459  偏心异径管 DN 900×10-Ⅱ-4RE RF0 RF0-

DN 900×10-Ⅱ-4 RE RF0 RF0-

WN20-40RF,00-300 RF250-300 RFRFN� RJ

BL80(b)-25RF��Â46F S=4(Bmp

WN150-300RFSCH80S1603/HG.RF H d=45

PL50(B)-10 RF S=12FFF1000N5

wn20-150ffsch40R-10 F MXtC=

wn50(a)-40 rf s=8F16RF0h400

wn250-25RF S=12RFrRF HG5/ Sc

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