GB12514.2-2006
Fire coupling - Part 2: Patterns and basic parameters for fire snap-types coupling
消防接口 第2部分：内扣式消防接口型式和基本参数
GB 12514.2-2006 is a current mandatory Chinese national standard for Fire coupling - Part 2: Patterns and basic parameters for fire snap-types 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 applies to internal snap-type fire couplings used in fire water supply systems, including hose couplings, suction pipe couplings, pipe thread couplings, caps, and fixed internal/external thread couplings. It is not applicable to couplings made of steel strips. It covers various types such as KD, KDN, KY, and KM.
Technical requirements
The standard specifies the structural patterns and basic parameters for internal snap-type fire couplings. Chapters 4 and 5 of this standard are mandatory provisions. It defines the structural requirements for various coupling types, including hose interfaces (KD, KDN), pipe thread interfaces (KY), and reducing interfaces (KJ). Furthermore, the standard outlines the basic dimensions and their tolerances for different nominal diameters ranging from 25mm to 150mm. It specifies the critical dimensional parameters such as outer diameter, inner diameter, and length limits for each coupling type under specific nominal pressures of 1.6 MPa and 2.5 MPa. The standard also details the marking methods for these couplings. Manufacturers must follow the specified marking format to indicate the nominal pressure, nominal diameter, and type code. For instance, a 2.5 MPa pressure rating is denoted by the letter Z, while 1.6 MPa can be omitted.
Testing methods
This standard primarily focuses on dimensional and structural verification rather than complex performance testing. The evaluation involves checking the structural patterns against the provided diagrams and verifying the basic dimensions and tolerances using standard measurement techniques. Unspecified tolerances should comply with GB/T 1804-2000.
FAQs
What products are regulated under GB 12514.2-2006?
It regulates internal snap-type fire couplings used in fire water supply systems, such as hose couplings, suction pipe couplings, and fixed thread couplings.
Are there any mandatory chapters in GB 12514.2-2006?
Yes, Chapters 4 and 5 regarding structural patterns and basic dimensions are mandatory.
Does GB 12514.2-2006 apply to steel strip couplings?
No, the standard explicitly states that it is not applicable to couplings made of steel strips.
The summary above provides a high-level overview of GB 12514.2-2006. 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 12514.2-2006 today to access all detailed parameters, 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