GB/T 12459  弯头 DN 300-Ⅱ-1090E3D

DN 300-Ⅱ-10 90E3D

NB/T47023 FM1200-6.4

SO125(B)-25 FM

PL80(B)-10FF

WN150-150rf B=492

SO100-300 RF

WN32(B)-100 FM S=

bl25-10 rf d=

BL1400(B)-16RFmldFF0ESRFFmlRF6/5265-150 RF B=7I10 n=4ampamp

so15(b)-40mb=3FR.M-30)-16RF0fs=5S0 RF&a00 RF H=200 RF ScfF