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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 9177:2022

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

CDN $85.00

SKU: 8b4ae6eb2ba8 Categories: ,

Description

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

Edition

2

Published Date

2022-01-26

Status

PUBLISHED

Pages

4

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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

Previous Editions

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