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Chinese Standard: 'GBT24970-2020'
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GB/T 24970-2020
ICS 93.080.30
P 66
Replacing GB/T 24970-2010
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Product Classification ... 6
5 Technical Requirements ... 6
6 Test Methods ... 14
7 Inspection Rules ... 21
8 Marking, Packaging, Transportation and Storage ... 22
1 Scope
This Standard stipulates the product classification, technical requirements, test
methods, inspection rules as well as marking, packaging, transportation and storage
of the delineator.
This Standard is applicable to delineator set up in China’s highways and urban roads;
while parking lots and other places where delineator need to be set may be
implemented by reference.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room
GB/T 2893.4 Graphical Symbols - Safety Colors and Safety Signs - Part 4:
Colorimetric and Photometric Properties of Safety Sign Materials
GB/T 3681 Plastics - Methods of Exposure to Direct Weathering, to Weathering
Using Glass-Filtered Daylight, and to Intensified Weathering by Daylight Using
Fresnel Mirrors
GB/T 3880.1 Wrought Aluminum and Aluminum Alloy Plates, Sheets and Strips for
General Engineering - Part 1: Technical Conditions of Delivery
GB/T 3978 Standard Illuminants and Geometric Conditions
GB/T 3979 Methods for the Measurement of Object Color
GB/T 9286 Paints and Varnishes - Cross Cut Test for Films
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests
GB/T 18226 Specification for Steel Component Anticorrosion of Highway
3.4 Persistence luminous
The brightness of self-luminous marks at a certain moment in the persistence time.
4 Product Classification
According to the setting conditions, the delineators are divided into post delineator
buried on the ground and attached delineator attached to the structure. According to
the shape of the reflector, the delineators are divided into trapezoidal, circular and
rectangular delineator. According to the color, the delineators are divided into white
and yellow delineator.
5 Technical Requirements
5.1 Structural dimension
5.1.1 Post delineator The post delineator is composed of a cylinder, a black mark and a reflector;
and the three parts shall be firmly connected. The cylinder is white. There shall be a
250mm long black mark on the upper part of the cylinder. There shall be a
180mm×40mm rectangular reflector in the middle of the black mark. Energy storage
self-luminous material may be added on the basis of the reflector. The cross-section of the cylinder is an isosceles triangle or a circular arc with
hollow fillets. When the post cross section is an isosceles triangle, the height of the post is
1250mm; the height of the triangle is 120mm; and the length of the base-edge is
100mm. See Figure 1 for dimensions and errors.
When the reflector is a micro-prism reflector, it shall not be penetrated by water or mist.
5.9 Salt spray corrosion resistance
After the salt spray corrosion resistance test, there shall be no signs of discoloration,
blistering, rust or erosion for each component. The reflector shall not be infiltrated by
water or mist; the reflective film shall not leak, or its edges shall be peeled off; the
energy storage self-luminous material shall not appear traces such as chalking, spots,
bubbles, cracks or uneven appearance.
5.10 High and low temperature resistance
After the high and low temperature resistance test, there shall be no signs of damage
such as cracks, flaking, chipping, blistering, warping or deformation.
5.11 Weather resistance
After continuous natural exposure or artificial accelerated aging test:
a) There should be no obvious cracks, nicks, bubbles, rust, erosion, peeling,
discoloration, chalking, or deformation on the delineator.
b) The chromaticity coordinates and lumi......
Related standard:   GB 50422-2017  GB/T 31439.1-2015
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