GB/T 12459  异径三通 DN 500×500×200-Sch10TR

DN 200×200×500-Sch10 TR

WN80-300 FM S=8/-300 RF0rf1

wn65(B)-40rF0 RF0RFFF/1000

SO400-63 RJN25-15/er

PL300-6 fF100-=s=4-120Smp

BL500-6FMK=146 AA=90 RF S=9FM s=8´s=8

wn250-16rf s F.65009fPL5/4=6-100-13

pl300(b)-10rf b=3.5f1=3d=4G/T20615A

3 FM 1200