GB5135.11-2006

Automatic sprinkler system-Part 11:grooved couplings and fittings

自动喷水灭火系统第11部分:沟槽式管接件

GB 5135.11-2006 é uma norma nacional chinesa obrigatória vigente: Automatic sprinkler system-Part 11:grooved couplings and fittings. Setor: Construção. Foco: Segurança de produtos. Entrada em vigor: 1 de dez. de 2006.

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

This standard specifies the requirements, test methods, inspection rules, and marking for grooved couplings and fittings used in automatic sprinkler systems. It applies to both rigid and flexible grooved couplings, as well as various grooved fittings like mechanical tees, elbows, and reducers used in fire protection piping systems. It is specifically targeted at components within fire suppression systems and does not cover general industrial piping outside this scope.

Requisitos técnicos

The standard mandates strict material and performance criteria. Chapters 6 and 8 are mandatory, outlining core technical and inspection requirements. Shell materials must use ductile iron (not lower than QT450-12) or forged steel, ensuring adequate tensile strength and corrosion resistance. Bolts and nuts must meet specific mechanical property grades and be zinc-plated or made of equivalent corrosion-resistant materials. It defines detailed physical and mechanical performance requirements for rubber gaskets (natural, EPDM, NBR, and silicone), including hardness, tensile strength, and aging resistance. The couplings must withstand rigorous operational stresses, including specific rated working pressures (minimum 1.2 MPa) and nominal diameters ranging from 25mm to 300mm. Performance requirements include vacuum tightness, air tightness, and pressure resistance up to 4 times the rated working pressure without leakage or damage. The standard also specifies requirements for load-bearing torque, maximum elongation gaps, and deflection angles for flexible joints. Components must endure extreme conditions such as low temperatures (-40°C), high-temperature aging (135°C), water shock (20,000 cycles), vibration, and fire resistance (15-minute exposure).

Métodos de ensaio

The standard outlines comprehensive testing procedures to verify compliance. Key tests include the Vacuum Test (negative pressure sealing), Gas Tightness Test (submerged in water), and Sealing and Hydrostatic Strength Test (pressurized to 2x and 4x rated working pressure). Additionally, it specifies a Load-bearing Torque Test to evaluate structural integrity under stress, and a Deflection Angle Test for flexible joints. Environmental and endurance tests are also mandated, such as the Low-Temperature Test, High-Temperature Aging Test, Water Shock Test, Vibration Test, and a rigorous Fire Resistance Test using a specified oil pan setup.

Perguntas frequentes

What products are regulated under GB 5135.11-2006?

This standard regulates grooved couplings and fittings used in automatic sprinkler systems, including rigid and flexible couplings, mechanical tees, elbows, and reducers.

Are there any mandatory chapters in GB 5135.11-2006?

Yes, Chapter 6 (Requirements) and Chapter 8 (Inspection Rules) are mandatory, while the remaining chapters are recommended.

How does GB 5135.11-2006 relate to international standards?

The standard primarily references ISO/DIS 6182-12, UL 213, and FM 1920 for performance requirements and test methods of quick pipe couplings and fire protection system fittings.

The summary above provides a high-level overview of GB 5135.11-2006. 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 5135.11-2006 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C83
ICS: 13.220.20
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relações

Substituída por:GB 5135.11-2025 (Futura)