GB/T 39024-2020

Active

Black leads for wood-cased pencils—Classification and diameters

木杆铅笔黑铅芯分类和直径

Standard Type

GBT

ICS

97.180

CCS

Y50

Status

Active

Issue Date

2020-07-21

Implementation

2020-07-21

Centralized Committee

中国轻工业联合会

Issuing Authority

国家市场监督管理总局、中国国家标准化管理委员会

Application Summary AI generated

This standard specifies the classification and diameter requirements for black leads used in wood-cased pencils. It is applied in the manufacturing and quality control of pencils for writing, drawing, and sketching, ensuring consistent lead thickness and performance across consumer and professional stationery products.

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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.