GA 68-2024 in English

VALID

Police stab-resistant body armors

Issued on:2024-04-09
Implemented on:2024-07-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $529.00
$514.00

Standard No:	GA 68-2024
Document status:	VALID
Title in English:	Police stab-resistant body armors
Title in Chinese:	警用防刺服
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2024-04-09
Implemented on:	2024-07-01
ICS Classification:	13.340.99-Other protective equipment
Chinese Classification:	A94-Police-used device and tool
Professional Classification:	GA-Security
Related Keywords:	stab-proof layer thickness stab-proof layer thickness aircraft-specific tests core technology innovation stab-proof layer thickness new flexibility index test tool category stab-resistant body armors introduction standard evolution new items

Introduction

Standard Evolution and Technology Upgrade

Key Indicators	GA 68-2019	GA 68-2024	Explanation of Changes
Definition of Terms	12 items	15 items	Three new items, including stab-proof accessories and stab-proof layer thickness
Stab-proof layer thickness	Not specified	≤16.5mm	New core indicators
Curvature	Not specified	≤180N(20mm deformation)	New flexibility index
Test tool	Category 1	Category 3(D1/D2/D3)	Detailed aircraft-specific tests

Core technology innovation

Stab-proof layer thickness control

The new standard clarifies for the first time that the upper limit of the thickness of Class A stab-proof clothing is 16.5mm, and the three-point measurement is carried out using the special equipment in Appendix A. In actual applications, a certain type of non-metallic stab-proof clothing has achieved a 24J protection level at a thickness of 14.2mm through the optimization of the aramid-polyethylene composite structure.

Dynamic bending performance

Newly added bending degree ≤ 180N requirement (20mm deformation), passed the 300mm pressure head test in Appendix D. A police force's actual combat test showed that the metallic stab-proof clothing that meets the new standard has a 42% lower rate of restricted movement in tactical actions.

Test method innovation

Multi-environment verification:Add harsh condition tests such as high temperature (55℃), low temperature (-20℃), and immersion in water for 30min
Tool classification:Class B aircraft special clothing must pass D2 and D3 tool tests at the same time
Automated judgment:The new version of Appendix B requires that the test equipment be equipped with an automatic puncture alarm system

Implementation suggestions

Manufacturers

Establish a process control system for the thickness of the puncture-proof layer, and it is recommended to use online monitoring equipment
Optimize material formulation, for example, one company uses ultra-high molecular weight polyethylene to reduce the weight by 17%
Add a new bending test fixture to ensure accurate control of pressure under 20mm deformation

Users

Require suppliers to provide a full set of test reports for the new version of Appendix AD when purchasing
Regularly check the sealing of the puncture-proof protective cover (6L water pressure test)
Pay attention to the product expiration date to avoid overuse that may lead to a decrease in protective performance

More samples: GB 50021-2001(2009) JGJ 94-2008 GB 18306-2015

Sample only — not a preview of GA 68-2024