GB/T 12459  等径三通 DN 500-Sch40STSF-FF400

WN 50-300 RF Sch80SRF0b1.6 h=50R

DN 500-Sch40S TSF-FF400

WN100-16 RF Sch10S/u0RF RFf-s4-25n450-5rf00-1.00RF S=5/S2-150 rf a S=5(b

WN80-25RF S=10.5 &ampampampampampampamp

WN250(B)-16RFTRR150

1 CFM 1600-0.2520δs=16

47065.3 C2sf0S631

a 1000=14003