T/CWIA 1011-2021 charcoal pencil
T/CWIA 1011-2021 charcoal pencil
Basic Information
Scope
Scope: This document specifies the terms and definitions, classification, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of wooden charcoal drawing pencils. This document applies to charcoal drawing pencils used for drawing. Main technical content: The main technical content includes the performance and dimensions of the lead core of charcoal drawing pencils, the dimensions of the pencil barrel, the sliding core, the eccentricity number, the coating of the pencil barrel, the bonding strength of the pencil barrel, the broken lead core in the barrel, and the requirements for appearance and corresponding test methods. It also specifies the requirements and test methods for the content of migratable elements and phthalate plasticizers in charcoal drawing pencils.