T/ZJWJ 001-2022 door closer
T/ZJWJ 001-2022 door closer
Basic Information
Scope
Main technical content: (1) This standard is primarily based on the industry standard QB/T 2698-2013 "Door Closers", while incorporating the technical requirements of advanced products from outstanding domestic and foreign similar production enterprises. The standard features a reasonable structure, accurate descriptions, and clear hierarchies. The referenced standards are currently valid and comply with the provisions of GB/T 1.1-2020. (2) This standard was developed in accordance with the positioning and requirements of group standards. During the drafting process, opinions and suggestions from various parties were widely solicited and incorporated, while taking into account the current status and development direction of the door closer industry. The standard is highly actionable. All technical indicators and requirements set forth in the standard can be verified and tested, and the test methods are supported by standards, which can be transformed into certification implementation guidelines. (3) The standard proposes terms and definitions, product classification, technical requirements, test conditions, test methods, inspection rules, marking, packaging, transportation, and storage for door closers. The main technical indicators of the standard have reached first-class domestic and advanced international levels, meeting the basic requirements of group standards. Compared with QB/T 2698-2013 "Door Closers", the main advancements include: 1) Improving the lifespan of door closers and enhancing their lifespan performance; 2) Increasing the anti-interference requirements of door closers, which better suits the usage environment of existing products and elevates the performance requirements for product usage environments. (4) The formulation, release, and implementation of this standard will standardize the technical requirements for door closer products, enhance their market competitiveness, and help improve their technical level.