STM PDF

Ball point pens and refills - Part 2- Documentary use (DOC). Original standard ISO 12757-2-1998 in PDF full version. Additional info + preview on request

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Fans - Efficiency classification for fans - Part 1- General requirements. Original standard ISO 12759-1-2023 in PDF full version. Additional info + preview on request

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Fans - Efficiency classification for fans - Part 2- Standard losses for drive components. Original standard ISO 12759-2-2019 in PDF full version. Additional info + preview on request

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Fans - Efficiency classification for fans - Part 3- Fans without drives at maximum operating speed. Original standard ISO 12759-3-2019 in PDF full version. Additional info + preview on request

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Fans - Efficiency classification for fans - Part 4- Driven fans at maximum operating speed. Original standard ISO 12759-4-2019 in PDF full version. Additional info + preview on request

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Fans - Efficiency classification for fans - Part 5- Jet fans. Original standard ISO 12759-5-2021 in PDF full version. Additional info + preview on request

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