GB/T 12459  弯头 DN 150-Ⅱ-590ES/i R

DN 150-Ⅱ-5 90ES/i R

WN 80(B)-25 FM S=6

1 CFM 900-0.6 δ

SO 3/4"-300 RF

PJ/SE 50(B)-16 RF S=4

NB/T47021 RF500-2.5

WN 600-300 RF Sch80S

APA-1

WN50-2500 RF Sch40s

WN 500-300 RF Sch80S0SB-2.600rf-2009�¢â€š�=(b)-16rfampampampampampampampam