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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JG/T 125-2007 Building hardware of windows and doors - Hinges, with respect to which, the following main technical changes have been made:
——the installation form code (see 4.2.2) and use frequency code (see 4.2.4) are added;
——the mechanical property requirements for visible and concealed door hinges suitable for places with high use frequency (use frequency I) are added (see Table 2);
——the mechanical property requirements for concealed window hinges (use frequency III) are added (see Table 2);
——the requirements for simulated doors for test suitable for places with high use frequency (use frequency I) are added (see 6.1.1a);
——the test methods of rotating torque, deformation under load (see 6.4.5) and repeated opening/closing (see 6.4.6a) of hinges suitable for places with high use frequency (use frequency I) are added;
——the end-of-manufacturing inspection and type inspection items (see Table 6) for visible and concealed door hinges suitable for places with high use frequency (use frequency I) and the end-of-manufacturing inspection and type inspection items (see Table 6) for concealed window hinges (use frequency III) are added.
This standard was proposed by the Research Institute of Standards and Norms (RISN) of the Ministry of Housing and Urban-Rural Development.
This standard is under the jurisdiction of the Technical Committee on Building Products and Accessories of Standardization Administration of the Ministry of Housing and Urban-Rural Development.
The previous editions of this standard are as follows:
——JG/T 125-2000;
——JG/T 125-2007;
Introduction
The following 12 standards are under the same general title Building hardware of(for) windows and doors:
——GB/T 32223 Building hardware for windows and doors - General requirements;
——JG/T 124 Building hardware for windows and doors - Handles for espagnolette gears;
——JG/T 125 Building hardware of windows and doors - Hinges;
——JG/T 126 Building hardware for windows and doors - Espagnolette gears;
——JG/T 127 Building hardware for windows and doors - Friction hinges;
——JG/T 128 Building hardware for windows and doors - Stay arms;
——JG/T 129 Building hardware for windows and doors - Rollers;
——JG/T 130 Building hardware for windows and doors - Single point locking gears;
——JG/T 213 Building hardware for windows and doors - Casement fastener handles;
——JG/T 214 Building hardware for windows and doors - Shoot bolts;
——JG/T 215 Building hardware for windows and doors - Multipoint locking gears;
——JG/T 393 Building hardware for windows and doors - Lever handles and knob furniture.
This standard is JG/T 125 Building hardware of windows and doors - Hinges.
Building hardware of windows and doors - Hinges
1 Scope
This standard specifies the terms and definitions, classification and labeling, requirements, test methods, inspection rules, marking, packaging, transportation and storage of hinges for building windows and doors.
This standard is applicable to hinges for building side-hung doors and side-hung windows, opening inward, and is not applicable to hinges for frameless side-hung glass doors, screen windows and doors and folding windows and doors.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 5823 Terminology for building windows and doors
GB/T 14436 General principles of industrial product guarantee documents
GB/T 29048 Operating forces - Test method - Windows
GB/T 29555-2013 Test method of operating forces for doors
GB/T 32223 Building hardware for windows and doors - General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5823 and GB/T 32223 and the following apply.
3.1
hinge
device for connecting door/window frame and leaf/casement for a purpose of supporting door leaf/casement and implementing the inward and outward rotation of door leaf /casement
[Term and definition in 3.10, GB/T 32223-2015]
3.2
visible hinge
hinge with exposed part where door leaf /casement is closed
3.3
concealed hinge
hinge without exposed part where door leaf /casement is closed
4 Classification and labeling
4.1 Classification and code
4.1.1 Classification by application
Hinges are classified into two types by application:
a) door hinges, coded as MJ;
b) window hinges, coded as CJ.
4.1.2 Classification by installation forms
Hinges are classified into two types by installation forms:
a) visible hinges, coded as MZ;
b) concealed hinges, coded as YC.
4.1.3 Classification by bearing level
Where the single-leaf door or window is classified by bearing level of a pair (2) of hinges, an integer multiple of 10kg is taken as the bearing level (e.g., where the bearing load is 26kg, the level is expressed as 20kg).
4.1.4 Classification by use frequency
The use frequency classification and code shall meet the requirements of Table 1.
Table 1 Use frequency classification and code of hinges
Use frequency classification Door hinges for places with high use frequency Door hinges for places with low use frequency Window hinges
Repeated opening and closing times ≥200,000 times ≥100,000 times ≥25,000 times
Use frequency code I II III
4.2 Labeling
4.2.1 Labeling method
The hinge label consists of application classification, installation form classification, bearing level, use frequency and standard number:
a) Labeling method for door hinges
b) Labeling method for window hinges
4.2.2 Labeling example
Example 1:
A pair of visible door hinges with a bearing level of 120kg and a high use frequency are labeled as MJ-MZ-120-I JG/T 125-2017;
Example 2:
A pair of visible door hinges with a bearing level of 80kg and a low use frequency are labeled as MJ-MZ-80-II JG/T 125-2017;
Example 3:
A pair of concealed window hinges with a bearing level of 60kg are labeled as CJ-YC-60-III JG/T 125-2017.
5 Requirements
5.1 General requirements
The hinges shall be mainly made of metallic materials such as carbon steel, die casting zinc alloy, die casting aluminum alloy, extruded aluminum alloy and stainless steel and shall meet the requirements of GB/T 32223.
5.2 Appearance
The appearance of hinges shall meet the requirements of GB/T 32223.
5.3 Corrosion resistance, film thickness and adhesive force
The corrosion resistance, film thickness and adhesive force of hinges shall meet the requirements of GB/T 32223.
5.4 Mechanical property
The mechanical property of hinges shall meet the requirements of Table 2.
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and labeling
5 Requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, transportation and storage
