GB12514.3-2006
Fire coupling - Part 3: Patterns and basic parameters for fire insertion-type coupling
消防接口 第3部分：卡式消防接口型式和基本参数
GB 12514.3-2006 is a current mandatory Chinese national standard for Fire coupling - Part 3: Patterns and basic parameters for fire insertion-type coupling. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Aug 1, 2006.
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 specifies the patterns and basic parameters for fire insertion-type couplings. It applies to fire water supply systems, specifically covering hose couplings, pipe thread couplings, blank caps, and reducing couplings. This standard is mandatory for manufacturers producing these specific fire coupling components. It references GB/T 1804-2000 for general tolerances.
Technical requirements
The standard defines the structural patterns and specifications for various insertion-type fire couplings, including hose couplings (KDK), blank caps (KMK), female pipe thread couplings (KYK), male pipe thread couplings (KYKA), and reducing couplings (KJK). It categorizes these components by nominal diameters and nominal pressures. Chapter 4 and Chapter 5 contain the mandatory provisions of this standard. Manufacturers must strictly adhere to the structural designs and basic dimensions outlined in these sections. The standard specifies dimensional tolerances and mating requirements for different coupling types. Additionally, the standard defines a specific marking method to identify the coupling type, nominal diameter, and nominal pressure. Unspecified linear and angular tolerances must comply with the rough class c requirements as specified in the referenced general tolerance standard.
Testing methods
While this specific part of the standard primarily focuses on patterns and basic parameters rather than testing procedures, compliance is evaluated through dimensional inspection and structural verification. Manufacturers must ensure that all basic dimensions and their deviations meet the specified tabular limits. The evaluation also includes verifying the correct application of the marking method and ensuring compatibility with applicable media such as water and foam mixtures.
FAQs
What products are regulated under GB 12514.3-2006?
It regulates insertion-type fire couplings used in fire water supply systems, including hose couplings, pipe thread couplings, blank caps, and reducing couplings.
Are the requirements in GB 12514.3-2006 mandatory?
Yes, Chapters 4 and 5 regarding structural patterns and basic dimensions are mandatory, while the remaining clauses are recommended.
What nominal pressures and diameters are covered?
The standard covers couplings with nominal pressures of 1.6 MPa and 2.5 MPa, and nominal diameters of 40, 50, 65, and 80 mm. Reducing couplings can combine different diameters within this series.
The summary above provides a high-level overview of GB 12514.3-2006. 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 12514.3-2006 today to access all detailed parameters, dimensional tables, and structural diagrams.
Applicability hints
- Type
- Product
- CCS
- C84
- 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
Partially replaces:GB 3265-1995, GB 12514-1990, GB 3265-1995
Replaced by:GB 12514-2026 (Upcoming)