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GB5725-2009
Safety nets
安全网
GB 5725-2009 é uma norma nacional chinesa obrigatória vigente: Safety nets. Setor: Alimentos. Foco: Segurança de produtos. Entrada em vigor: 1 de dez. de 2009.
A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.
Visão geral de conformidade
Esta visão geral está disponível por enquanto apenas em inglês.
Escopo e aplicabilidade
GB 5725-2009 applies to safety nets used in construction and other high-altitude workplaces to prevent personnel or objects from falling. It covers three main product categories: horizontal safety nets (P), vertical safety nets (L), and fine mesh safety vertical nets (ML). Manufacturers of fall protection equipment must ensure their products comply with these specific Chinese regulations before entering the market. The standard is not applicable to non-industrial protective netting, such as agricultural or sports netting.
Requisitos técnicos
The standard specifies comprehensive physical and mechanical requirements for safety nets. For horizontal and vertical nets, it mandates specific criteria for rope breaking stress, mesh size limits, and node fixation. These nets must withstand designated impact forces without rope breakage or allowing the test weight to contact the ground. Flame-retardant variants must meet strict afterflame and smoldering time limits. For fine mesh safety vertical nets, the standard introduces a performance grading system, categorizing products into Class A (used in fall risk areas) and Class B (used in non-fall risk areas or with guardrails). Key metrics include the product of breaking stress and elongation, seam joint tensile strength, and trapezoidal tearing stress. Class A and Class B nets must meet distinct minimum threshold values to ensure adequate fall protection. Additionally, environmental durability is heavily emphasized. The standard outlines mandatory weather resistance testing for horizontal/vertical nets and aging resistance evaluations for fine mesh nets. Metal components must also pass corrosion resistance testing to prevent structural failure due to rust.
Métodos de ensaio
The standard outlines several critical testing procedures to verify compliance. The impact resistance test (detailed in Annex A) involves dropping a specialized test weight from specific heights onto the net to assess its energy absorption and structural integrity. The weather resistance test (detailed in Annex B) uses accelerated weathering apparatus, such as fluorescent UV or xenon arc lamps, to simulate outdoor degradation. Furthermore, tests for breaking stress, trapezoidal tearing stress, and penetration resistance are conducted using precision tensile testing machines to evaluate the mechanical strength of the netting materials and components.
Perguntas frequentes
What products are regulated under GB 5725-2009?
The standard regulates safety nets used in high-altitude workplaces such as construction sites to prevent personnel or objects from falling. It specifically covers horizontal safety nets, vertical safety nets, and fine mesh safety vertical nets.
Are there any significant updates from the previous versions of this standard?
The updated version introduces performance grading for fine mesh nets (Class A and Class B), adds definitions for mesh size and initial sag, modifies impact and penetration testing methods, and includes specific weather resistance and aging test requirements.
How does GB 5725-2009 differ from international standards like EN or ANSI?
GB 5725-2009 aligns conceptually with international guidelines such as BS EN 1263-1:2002 and ANSI A10.11-1989, but it establishes specific Chinese classification markers, distinct impact testing heights, and unique mandatory grading criteria for fine mesh nets that must be strictly followed for the Chinese market.
The summary above provides a high-level overview of GB 5725-2009. 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 5725-2009 today to access all detailed parameters, tables, and testing procedures.
Indicações de aplicabilidade
- Tipo
- Produto
- CCS
- C73
- ICS
- 13.100
- Órgão competente
- Ministry of Emergency Management
- Comitê técnico
- National Technical Committee on Personal Protective Equipment of Standardization Administration of China