GB/T 12459  弯头 DN 65-Sch1090EL0a-

DN 65-Sch10 90EL0a-

DN700-PN2.5 PL RF Ⅱ00-10sB1N³Ã

WN40B-100FM S=540

NB/T47023 T400-1.6 δs=80-FFF00R100-1.9@W

WN 23-300 FMSchRF RJ30 f1=3 a/h80

BI 356�rrf3 Fff03.4´=20F-

WN300-1500 RF Sch40RF

wn600-16rfs=1300RFB=700R RF Sch40F4D=550-1.0

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