GB/T 43550.2-2023
Classification, dimensions, quality and test methods of mechanical pencils and lead for general use Part 2: Black lead (English Version)

Standard No.
GB/T 43550.2-2023
Language
Chinese, Available in English version
Release Date
2023
Published By
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 43550.2-2023
 
Introduction
This standard specifies the classification, dimensions, quality requirements, and testing methods for black lead cores used in general-purpose activity pencils. It covers aspects such as core hardness, length, diameter, tensile strength, and dimensional accuracy to ensure consistent performance and quality of these pencil components.

GB/T 43550.2-2023 history

  • 2023 GB/T 43550.2-2023 Classification, dimensions, quality and test methods of mechanical pencils and lead for general use Part 2: Black lead

Topics on standards and specifications

the mass of a pencil

Standard and Specification

KS G 2602-1999 Leads for pencils, coloured pencils and mechanical pencils ISO 20318-2:2019 Mechanical pencils and leads for general use — Classification, dimensions, quality and test methods — Part 2: Black leads SS-ISO 20318-2:2019 Mechanical pencils and leads for general use - Classification, dimensions, quality and test methods - Part 2: Black leads SANS 9177-2:1989 Mechanical pencils Part 2: Black leads - Classification and dimensions DIN ISO 9177-2:1990 Mechanical pencils; black leads, classification and dimensions; identical with ISO 9177-2:1989 ISO 9177-2:2022 Mechanical pencils for technical drawings — Part 2: Black leads — Classification and dimensions SS-ISO 9177-2:2022 Mechanical pencils - Part 2: Black leads - Classification and dimensions (ISO 9177-2:2022, IDT KS G 2617-1997 Mechanical pencils SS-ISO 20318-1:2019 Mechanical pencils and leads for general use - Classification, dimensions, quality and test methods - Part 1: Mechanical pencils (ISO 20318-1:2019, IDT GOST R 50249-1992 Mechanical pencils. Part 2. Black leads. Classification and dimensions

GB/T 43550.2-2023 -All Parts

GB/T 43550.1-2023 Classification, dimensions, quality and test methods of mechanical pencils and lead for general use - Part 1: Mechanical pencils GB/T 43550.2-2023 Classification, dimensions, quality and test methods of mechanical pencils and lead for general use Part 2: Black lead


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