GB20031-2024
Foam fire extinguishing equipments
泡沫灭火设备
GB 20031-2024 is a current mandatory Chinese national standard for Foam fire extinguishing equipments. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Jun 1, 2025.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to foam fire extinguishing equipment, including foam proportioning devices, foam generating devices, foam projecting devices, unitized foam extinguishing devices, and related accessories such as foam concentrate tanks and pumps. It is mandatory for manufacturers producing foam firefighting systems for the Chinese market. Please note that this standard specifically excludes foam spray extinguishing devices, which are covered by separate regulations.
Technical requirements
The standard specifies comprehensive requirements for various components. For foam proportioning devices, it mandates strict tolerances for the mixing ratio under varying pressure and flow conditions, along with limits on pressure loss. Devices must demonstrate structural integrity and sealing reliability under specified hydrostatic tests. For foam generating devices, the standard defines parameters such as flow coefficient, expansion ratio, and drainage time. It requires that materials contacting the foam concentrate be made of corrosion-resistant materials like copper alloy or austenitic stainless steel. Regarding unitized foam extinguishing devices and accessories, the standard sets forth requirements for effective spraying time, discharge distance, and anti-tilt performance. Foam spray heads must also pass rigorous environmental tests including high temperature, salt spray, and stress corrosion. All equipment must maintain reliable operation during continuous runtime and working cycle tests.
Testing methods
The standard outlines various testing procedures to verify compliance, including hydrostatic strength and hydrostatic sealing tests to ensure no deformation or leakage occurs under pressure. It also details methods for measuring the mixing ratio, flow coefficient, and foam expansion ratio. Environmental and mechanical durability tests such as drop tests, water impact tests, and accelerated aging tests are required for specific components. Additionally, real-scale fire extinguishing tests are mandated for certain devices like foam sprinklers and foam hydrant boxes to prove actual firefighting efficacy.
FAQs
What products are regulated under GB 20031-2024?
GB 20031-2024 applies to a wide range of equipment including foam proportioning devices (pressure, balanced, direct injection, etc.), foam generators (low, medium, high expansion), foam monitors and nozzles, unitized foam extinguishing devices, and related accessories like foam concentrate tanks and pumps. It does not apply to foam spray extinguishing devices.
Are there any updates from the previous version of GB 20031?
The 2024 version replaces GB 20031-2005 and introduces several key changes, including the addition of requirements for direct injection and mechanical pump-in proportioning devices. It also updates requirements for foam monitors, foam guns, foam concentrate tanks, and unitized devices. Manufacturers previously certified under the 2005 version must update their compliance to the new 2024 standard.
How does GB 20031-2024 differ from international ISO standards?
While GB 20031-2024 governs the specific performance and testing of foam fire extinguishing equipment in China, it heavily references other foundational Chinese standards for components. For example, foam monitors must comply with GB 19156, and foam pumps must comply with GB 6245. International manufacturers should ensure their products meet these specific Chinese national standards rather than relying solely on ISO equivalents.
The summary above provides a high-level overview of GB 20031-2024. 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 20031-2024 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C83
- ICS
- 13.220.20
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China
Relationships
Replaces:GB 20031-2005