BHMA - Builders Hardware Manufacturers Association Inc.
适用范围
This Standard establishes performance requirements for Interconnected Locks and includes operational@ cycle@ strength@ material evaluation@ security@ and finish tests. Tests described in this Standard are performed under laboratory conditions. In actual usage@ results vary because of installation@ door and frame construction@ maintenance and environmental conditions. Grade Qualifications (Also See Appendix A.) Manufacturers shall indicate the Grade level of their locks. Locks shall meet all tests for their grade listing. A Grade 1 lock shall meet all Grade 1 criteria@ a Grade 2 lock shall meet all Grade 2 criteria@ and a Grade 3 lock shall meet all Grade 3 criteria.