GB/T 12459  异径三通 DN 650×650×20-Sch160TR

DN 20×20×650-Sch160 TR

WN450-600 FM B=430.6

wn 20-100 m s=-300RF-faa=91

pl25-10rf hg/ d=840

PL100(b)-16rf4-140ch8016F S=00 RF SCc0000 R

WN400(B)-40ff5,F5=5150 FF5-

wn600-150 rfs=1456î75RF0/U 1EE9ng s=8

wn500(b)-16 ff s=8/f

WN250-300 RF SC

47023c-f