GB/T 12459  同心异径管 DN 150×125-Sch40RC=FM.5T/F-160 r

DN 150×125-Sch40 RC=FM.5T/F-160 r

IF 20-300 RF B=15.7 H=460H8

WN50a-150RFB=9055/RF25HG2RF2

wn 350-100 rfRF未=52f b=1500 RJFM-150

PL150(B)-16 RF D=284.8 b=4

WN150(B)-63Mm s=5¦

PL100-6RFF bF Sch Sc60-25g621

BL50-600 RFRFFs=

3 FM 800-1.0rf4F

SO 600-