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GB 30981-2020: Limit of harmful substances of industrial protective coatings
GB 30981-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 87.040
G 51
Replacing GB 30981-2014
Limit of Harmful Substances of Industrial Protective
Coatings
ISSUED ON: MARCH 04, 2020
IMPLEMENTED ON: DECEMBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Product Classification ... 9
5 Requirements ... 10
6 Test Methods ... 15
7 Inspection Rules ... 17
8 Packaging Mark ... 18
9 Implementation of Standards ... 19
Appendix A (Normative) Determination of Moisture Content – Gas
Chromatography ... 20
Appendix B (Normative) Determination of Hexavalent Chromium (Cr6+) Content
– Spectrophotometry ... 24
Bibliography ... 31
Limit of Harmful Substances of Industrial Protective
Coatings
1 Scope
This Standard specifies the classification, requirements, test methods, inspection rules,
packaging marks, and standard implementations for the products involved in the
allowable limits for substances harmful to humans and the environment in industrial
protective coatings.
This Standard is applicable to all types of industrial protective coatings (excluding
marine coatings) for the protection of metal, concrete, plastic and other surfaces except
putty.
This Standard is not applicable to aerospace coatings, nuclear power coatings,
coatings for military equipment and facilities.
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 1725-2007 Paints Varnishes and Plastics - Determination of Non-Volatile-
Matter Content
GB/T 3186 Paints Varnishes and Raw Materials for Paints and Varnishes -
Sampling
GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test
Methods
GB/T 6750-2007 Paints and Varnishes - Determination of Density - Pycnometer
Method
GB/T 8170-2008 Rules of Rounding off for Numerical Values and Expression and
Judgement of Limiting Values
GB/T 9750 Marks for Package of Coating Products
GB/T 9758.5-1988 Paints and Varnishes - Determination of “Soluble” Metal
Content – Part 5: Determination of Hexavalent Chromium Content of the Pigment
Portion of the Liquid Paint and the Paint in Power Form - Diphenylcarbazide
Spectrophotometric Method
GB/T 9760-1988 Paints and Varnishes - Preparation of Acid Extracts from Paints
in Liquid or Powder Form
GB/T 23985-2009 Paints and Varnishes - Determination of Volatile Organic
Compound (VOC) Content - Difference Method
GB/T 23986-2009 Paints and Varnishes - Determination of Volatile Organic
Compound (VOC) Content - Gas-Chromatographic Method
GB/T 23990-2009 Determination of the Contents of Benzene Toluene
Ethylbenzene and Xylene in Coatings by Gas Chromatography
GB/T 23992-2009 Gas chromatography of chlorinated hydrocarbons content in
paint
GB/T 30647-2014 Determination of Harmful Elements - Total Content of Coatings
GB/T 34675-2017 Determination of Volatile Organic Compound (VOC) - Content
in Radiation Curable Coatings
GB/T 34682-2017 Determination of Volatile Organic Compound (VOC) - Content
in Reactive Diluent Containing Coatings
GB/T 36488-2018 Determination of Polycyclic Aromatic Hydrocarbons in Coatings
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply. ‘
3.1 Engineering machinery
Working machinery and equipment used in the comprehensive mechanized
construction of earthmoving works, stone works, concrete works and various types of
building installation engineering.
NOTE: For example, industrial vehicles, construction machinery, line machinery, municipal
sanitation machinery, elevators and escalators, pneumatic tools, etc.
3.2 Agricultural machinery
Various machines used in crop planting and animal husbandry production, as well as
in the initial processing and processing of agricultural and livestock products.
A kind of equipment for transportation of cargoes, which shall meet the following
conditions:
a) It has sufficient strength and rigidity and can be used repeatedly for a long time;
b) It is suitable for carrying by one or more modes of transportation. When
transferring in the road, the package for cargoes in the box need not be replaced;
c) It shall be equipped with devices that facilitate fast loading and unloading and
handling, especially when transferring from one mode of transport to another;
d) It facilitates the filling or emptying of the cargo;
e) It has a volume of 1m3 and above;
f) It is a freight vehicle designed in accordance with the requirements to ensure
security and has the ability to prevent easy access by unrelated personnel.
[GB/T 1992-2006, definition 3.1]
3.8 Package
The general name of the container, material, and auxiliary used in accordance with
certain technical methods in order to protect the product in the circulation process,
facilitate storage and transportation, and promote sales.
NOTE: For example, beverage cans, food cans, chemical drums, steel drums, non-stick pans,
etc.
3.9 Profiles
Objects with a certain geometric shape made of aluminum, iron or steel and materials
with a certain strength and toughness through rolling, extrusion, casting and other
processes.
NOTE: For example, aluminum profiles, plastic profiles, etc.
3.10 Electrical and electronic product
Equipment and ancillary products that operates by relying on current or
electromagnetic fields or aims at generating, transmitting, and measuring current and
electromagnetic fields; whose rated operating voltage is no more than 1500V for direct
current and 1000V for alternating current. The equipment that involves the production,
transmission and distribution of electrical energy is excluded.
3.11 Pre-coated coil
Organic material/metal composite sheet material that is sold in coil or sheet after
protective coatings for buildings and constructions, container coatings, pre-coated coil
coatings, packaging coatings, profile coatings (including metal substrate curtain wall
coatings), and electrical and electronic coatings. The radiation-curable coatings are
divided into water-based and non-water-based coatings.
5 Requirements
5.1 The limit values of VOC content in various types of industrial protective coatings
other than special functional coatings shall meet the requirements of Tables 1, 2, 3,
and 4.
NOTE: Special functional coatings refer to insulating coatings, fingerprint-resistant coatings for
touch screens and optical plastic sheets, and polytetrafluoroethylene coatings (chemical media
resistance, wear resistance, lubrication, non-stick and other special functions) that are sintered
and formed at high temperatures above 150°C, fluorosilicone coatings for elastomers, silver-
plated effect paints (radiation-curable), marking paints, protective coatings for electronic
components (special functions such as anti-acid fog, dustproof, and moisture-proof), etc.
The limit value of VOC content in water-based coatings shall meet the requirements of
Table 1. The limit value of VOC content in solvent-based coatings shall meet the
requirements of Table 2. The limit value of VOC content in solven...