GB/T 12459  弯头 DN 100-Sch4090ELc=164/

DN100-Sch40 90ELc=164/

DN50-PN320 WN RF Ⅱ S=5nprq.601550s S¹&am-600r-150 R s=F Sch40SMm

SO20B-10FMb=1.0 1016rfFRFS=63-2.5/39-100 δoto65=225/mpampampampa

SO500(B)-6RF.0 B1µвХђp0S31t(b)-6

WN 250(B)-10 RF S=5/F/ScrfS204(b)bb=1lF517)-16H

47023 FM