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GB8903-2024
Steel wire ropes for lifts
电梯用钢丝绳
GB 8903-2024 — действующий обязательный национальный стандарт Китая: Steel wire ropes for lifts. Отрасль: Электроника. Тема: Безопасность продукции. Дата вступления в силу: 25 сент. 2024 г..
Применимость зависит от продукции, схемы сертификации, уведомлений компетентных органов и переходных правил. Закажите перевод или проверьте источник, прежде чем использовать эту запись в решениях по соответствию.
Обзор требований
Этот обзор пока доступен только на английском языке.
Область применения
This standard applies to carbon steel bright or coated steel wire ropes with nominal diameters ranging from 6 mm to 38 mm, specifically designed for elevator applications. It covers suspension wire ropes for traction, hydraulic, and positive drive elevators, as well as compensating wire ropes and governor ropes. Manufacturers supplying wire ropes for passenger, goods, and service elevators in the Chinese market must comply with this standard.
Технические требования
The standard specifies comprehensive material and manufacturing requirements, including wire strength levels ranging from 1320 MPa to 2160 MPa, and surface conditions (bright or coated). It defines multiple rope core categories, such as fiber cores (FC), steel cores (WC), and the newly introduced steel-based composite cores (SCC) and solid polymer cores (SPC). Manufacturing quality controls dictate strict parameters for stranding, lay length, and pre-forming processes. The standard also sets specific diameter tolerances categorized by rope core type and elevator drive mechanism, alongside rigorous requirements for minimum breaking forces and elongation rates. Compliance with these manufacturing tolerances is mandatory for safety certification. Additionally, the standard outlines precise lubrication requirements, setting acceptable oil content ranges for both fiber cores and outer strands to ensure longevity and performance under dynamic elevator loads. It also specifies structural and elastic elongation limits to prevent operational failures.
Методы испытаний
Verification includes diameter measurement under no-load and specific load conditions using calibrated vernier calipers. Breaking force tests are conducted according to GB/T 8358, while elongation rates are measured using specialized extensometer methods detailed in the standard's annex. Further evaluations include tensile testing and reverse bending tests for individual wires (per GB/T 228.1 and GB/T 238), along with lubricant content analysis. Batch sampling and acceptance rules must be strictly followed to pass quality inspection.
Частые вопросы
What products are regulated under GB 8903-2024?
This standard regulates steel wire ropes with nominal diameters ranging from 6 mm to 38 mm, specifically designed for use as suspension ropes, compensating ropes, and governor ropes in traction, hydraulic, and positive drive elevators.
Are there any significant updates in GB 8903-2024 compared to the 2018 version?
The 2024 edition is now a mandatory national standard (transitioning from the previous recommended GB/T 8903-2018). Key updates include the addition of new wire strength levels (up to 2160 MPa), introduction of new core types like EPIWRC and SPC, revised diameter deviation categories, and updated minimum breaking force tables. Manufacturers must update their compliance testing to reflect these mandatory changes.
How does GB 8903-2024 differ from international ISO standards for elevator ropes?
GB 8903-2024 is specifically tailored for the Chinese elevator industry, incorporating unique requirements such as detailed elongation rate testing (structural and elastic), specific oil content limits for different rope types, and comprehensive discard criteria based on visible broken wire counts per lay length. Engineers must verify compliance with this specific GB standard rather than assuming ISO equivalence for market access in China.
The summary above provides a high-level overview of GB 8903-2024. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 8903-2024 today to access all detailed parameters, tables, and testing procedures.
Подсказки по применимости
- Тип
- Продукция
- CCS
- H49
- ICS
- 77.140.65
- Компетентное ведомство
- Ministry of Industry and Information Technology
- Технический комитет
- National Technical Committee on Steel of Standardization Administration of China
Связи
Заменяет:GB/T 8903-2018