GB/T 12459  同心异径管 DN 65×40-Ⅱ-4RC00c6/data/src/public/common

47021 RF1700-1.00 ff.229Sch2R.5R∙A/S.0/70015/u0020615

WN15-2500 FM43-561.S0 Hd=f0rmpa=

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BI 2600 δ4

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Bl50-25rf

So600b-16rfB)-16 RF0.6

WN300