GB/T 12459  异径三通 DN 1100×1100×50-Sch20TR

DN 50×50×1100-Sch20 TR

WN 25-150 RF Sch40S

pl100-6rfs8040 A=57

bl150(B)-900 T S=12F-40S16-40S16r

so500(b)-10mf50 rf M1

wn50-40rf s=6.5 &ampampampampampampampampamp

WN 500-25 RF

BL150A-150RF undefined=a=U& R-chRh10S 90E3D1h6. FF

so25(b)-150 rfR=