T/ZZB 0719-2018
Permanent magnetic ferrite for speaker—Big ring shaped (English Version)

Standard No.
T/ZZB 0719-2018
Language
Chinese, Available in English version
Release Date
2018
Published By
Group Standards of the People's Republic of China
Latest
T/ZZB 0719-2018
Scope
This standard specifies the terms and definitions, product structure, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality commitment of permanent ferrite for loudspeakers - large-size ring magnets. This standard is applicable to the preparation of sintered permanent magnet ferrite for speakers using powder metallurgy technology - large-sized ring magnets (referring to magnets with an outer diameter of ≥220 mm or a height of ≥30 mm, hereafter referred to as: large-sized ring magnets).

T/ZZB 0719-2018 history

  • 2018 T/ZZB 0719-2018 Permanent magnetic ferrite for speaker—Big ring shaped
Permanent magnetic ferrite for speaker—Big ring shaped



Copyright ©2024 All Rights Reserved