NBN 621-1963
Plastic smooth hose for installation in electrical ductwork
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NBN 621-1963
Standard No.
NBN 621-1963
Release Date
1963
Published By
BE-NBN
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NBN 621-1963
NBN 621-1963 history
1963
NBN 621-1963
Plastic smooth hose for installation in electrical ductwork
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