GB/T 24601-2024 in English

VALID

Price(USD)： $430.00
$418.00

Standard No:	GB/T 24601-2024
Document status:	VALID
Title in English:	Tilt and turn hardware system for building windows
Title in Chinese:	建筑窗用内平开下悬五金系统
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2024-08-23
Implemented on:	2025-03-01
Superseding:	GB/T 24601-2009 Building hardware for windows—Tilt and turn hardware system
ICS Classification:	91.060.50-Doors and windows
Chinese Classification:	Q73-Metal components and accessories
Professional Classification:	GB-National Standard
Related Keywords:	hardware system underslung hardware system exposed system concealed system building windows introduction interpretation
Related Topics:	five level balance gb+t24601+2009+ pb floating window Included system Construction Industry Fourteenth Five-Year Plan GBT24601 GB/T 24601-2009

《GB/T 24601-2024建筑窗用内平开下悬五金系统》由TC454（全国建筑构配件标准化技术委员会）归口，主管部门为住房城乡建设部。

Introduction

Interpretation of GB/T 24601—2024 National Standard of the People's Republic of China

Standard Dimensions	Requirements of the 2009 Edition	Requirements of the 2024 Revision
Terms and Definitions	The definitions of the underslung hardware system and its components are not specified in detail.	The definition of the underslung hardware system is added, and the terms of key components such as anti-misoperation devices and inclined tie rods are clarified.
Classification and Codes	No detailed classification is carried out according to the installation form and repeated opening and closing durability classification.	New classification codes have been added based on the installation form (exposed, concealed) and repeated opening and closing durability (I, II, III), such as C for conventional windows and L for floor-to-ceiling windows; MZ for exposed hinges and YC for concealed hinges.
Material and performance requirements	The material requirements are relatively general and do not involve details such as torsional strength and film thickness.	The material performance indicators have been refined, and the torsional strength requirements (25 N·m) and calculation formula have been added, and the specific numerical ranges of film thickness and adhesion have been clarified. For example, the tension on the upper hinge must reach the value specified in Table 1, and it should not break after the test.

To ensure that the performance of the hardware system meets the requirements of GB/T 24601-2024, it is recommended that:

Manufacturers should strictly follow the materials and processes specified in the standard for production, and conduct sampling inspections on key components such as upper hinges and lower hinges.
Provide detailed technical parameters and installation instructions in the product packaging to ensure that users can correctly use and maintain the hardware system.
Regularly inspect and maintain the hardware system, especially the strength test of the locking components, to extend its service life.

Performance Index	Conventional Window Requirements	Floor-to-ceiling Window Requirements
Upper Hinge Undertake Tension	60kg corresponds to 1650N, 90kg corresponds to 2450N.	60kg corresponds to 600N, 90kg corresponds to 900N.
Lower Hinge Undertake Pressure	60kg corresponds to 3400N, 90kg corresponds to 5100N.	60kg corresponds to 3050N, 90kg corresponds to 4600N.
Repeated opening and closing durability	15,000 times for the exposed system and 20,000 times for the concealed system.	10,000 times for the exposed system and 15,000 times for the concealed system.