GB/T 12459  异径三通 DN 650×650×65-Sch40STR-1f

DN 650×650×65-Sch40S TR-1f

47023 fm 700-4.0/64-140

1 FM 400-1.0 δs=8rf0-4.0/Ff9.60rF660R

PL65-25RF)0-1.6 Î2

20615lwn400-300rfRFSRF0-30010.5mp

wn150(b)-40tb=- 6 RF B16-0.6hCH4rf hg00-=1300rf5 RF5-57/

pl100b-6rf f1=3 RF60-1B=27 H=16

2 A3.b)-

NB=T47