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ISO 9177-3:2022

M00000505

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ISO 9177-3:2022 Mechanical pencils for technical drawings - Part 3: Black leads - Bending strengths of HB leads

standard by International Organization for Standardization, 02/01/2022

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This document specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.

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Published: 02/01/2022 File Size: 1 file , 920 KB Note: This product is unavailable in Belarus, Russia, Ukraine