This specification specifies the performance and inspection requirements for bonded permanent ferrite magnets used for sealing. The corresponding test methods are selected from GB/T12796 "General Specification for Permanent Ferrite Magnets" and relevant supplementary test methods are specified. This specification applies to bar-shaped and other shaped magnets used for sealing of various types of refrigeration equipment, temporary or permanent buildings, industrial equipment, etc. Detailed specifications shall be prepared in accordance with this specification and shall comply with the provisions of the corresponding blank detailed specification.
SJ/T 10539-1994 history
1970SJ/T 10539-1994 Sectional specification for bonded permanent ferrite magnets for seal