GB/T 3324-2024 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 3324-2024 | English | 485 |
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General technical requirements for wooden furniture
| Valid |
| GB/T 3324-2017 | English | 145 |
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General technical requirements for wooden furniture
| Valid |
| GB/T 3324-2008 | English | 85 |
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Wooden furniture -- General technical requirements
| Obsolete |
| GB/T 3324-1995 | English | 239 |
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Wooden furniture--General technical requirments
| Obsolete |
| GB 3324-1982 | English | 239 |
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Wooden furniture
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 3324-2024
Similar standards GB/T 3326 GB/T 3325 GB/T 3324-2024: General technical requirements for wooden furniture---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3324-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.140
CCS Y 80
Replacing GB/T 3324-2017
General technical requirements for wooden furniture
Issued on. OCTOBER 26, 2024
Implemented on. MAY 01, 2025
Issued by. State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword... 4
1 Scope... 7
2 Normative references... 7
3 Terms and definitions... 9
4 Categories... 11
5 Requirements... 11
5.1 Main dimensions and their deviations... 11
5.2 Shape and position tolerances... 13
5.3 Material requirements... 14
5.4 Appearance requirements... 15
5.5 Physical and chemical properties... 17
5.6 Mechanical properties... 19
5.7 Structural safety (basic item)... 20
5.8 Limited amount of hazardous substances (basic items)... 21
5.9 Electrical safety (basic item)... 21
5.10 Flame retardancy (basic item)... 21
6 Test methods... 21
6.1 Determination of main dimensions and their deviations... 21
6.2 Shape and position tolerance measurement... 21
6.3 Material determination... 23
6.4 Appearance determination... 23
6.5 Determination of physical and chemical property... 24
6.6 Mechanical performance test... 27
6.7 Structural safety... 28
6.8 Limited content of hazardous substances... 28
6.9 Electrical safety... 28
6.10 Flame retardancy... 28
7 Inspection rules... 28
7.1 Inspection classification... 28
7.2 Exit-factory inspection... 29
7.4 Rules for determining test results... 31
7.5 Re-inspection rules... 31
8 Marking, instructions for use, packaging, transportation and storage... 31
8.1 Marking... 31
8.2 Instructions for use... 31
8.3 Packaging... 32
8.4 Transportation and storage... 32
Appendix A (Normative) Main parts and product classification of wooden furniture 33
A.1 Main components of wooden furniture... 33
A.2 Classification by main components of the product... 33
A.3 Classification by surface finish of main parts of the product... 33
A.4 Products are classified by use occasion... 34
Appendix B (Normative) Annual average timber balanced moisture content in
provinces (districts, special zones), municipalities, major cities... 35
Appendix C (Informative) Standards for commonly used wood-based panels and wood
for furniture name... 37
References... 39
1 Scope
This document stipulates the requirements, inspection rules and markings, instructions
for use, packaging, transportation and storage of wooden furniture; describes the
corresponding test methods; defines terms and definitions; gives classifications.
This document is applicable to the quality control of wooden furniture design,
production, sales services, inspection and testing.
2 Normative references
The contents in the following documents constitute an indispensable clause in this
document through normative references in the text. Among them, only the version
corresponding to the date is applicable to this file; the latest version (including all
modifications) of the reference files without the date is applicable to this file.
GB/T 250 Textiles - Tests for color fastness - Grey scale for assessing change in
color
GB/T 1043.1 Plastics - Determination of Charpy impact properties - Part 1.Non-
instrumented impact test
GB/T 1927.4-2021 Test methods for physical and mechanical properties of small
clear wood specimens - Part 4.Determination of moisture content
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 3920-2008 Textiles - Tests for color fastness - Color fastness to rubbing
GB/T 4893.1-2021 Test of surface coatings of furniture - Part 1.Determination of
surface resistance to cold liquids
GB/T 4893.2-2020 Test of surface coatings of furniture - Part 2.Determination of
resistance to wet heat
GB/T 4893.3-2020 Test of surface coatings of furniture - Part 3.Determination of
resistance to dry heat
GB/T 4893.4-2023 Test of surface coatings of furniture - Part 4.Determination of
adhesion - Cross cut
GB/T 4893.7-2013 Test of surface coatings of furniture - Part 7.Determination of
surface resistance to alternation of heat and cold
GB/T 4893.8-2023 Test of surface coatings of furniture - Part 8.Determination of
wearability
3 Terms and definitions
The terms and definitions defined in GB/T 28202-2020, as well as the following terms
and definitions, apply to this document.
3.1 Wooden furniture
Except for decorative parts and accessories among the main parts of furniture, the
rest are made of wood and other wood materials.
3.2 Solid wood furniture
The wooden furniture whose main components are made of solid wood materials,
with a surface that has been veneered (or not) solid wood veneer or thin wood (veil)
and has been (or not) painted. Solid wood materials include logs, solid wood sawn
timber, finger joints, integrated materials and other materials.
3.3 Wood-based panel furniture
Panel furniture
The wooden furniture whose main components are made of wood-based panels such
as fiberboard, particleboard, plywood, wooden board, laminated materials, etc.
3.4 Solid wood and wood-based panel furniture
The wooden furniture whose product frames are made of solid wood, whilst the
panels or inner panels of the frame are made of decorative wood-based panels.
[Source. GB/T 28202-2020, 2.14, modified]
3.5 Wooden furniture made of multiple materials
Wooden furniture, which is made of various wooden materials, but cannot be
defined as solid wood furniture, panel furniture, and other wooden furniture.
3.6 Outward appearance
External visual surface in the initial state of the product.
3.7 Inward appearance
The visual surface displayed by the opening of moving parts such as product doors
and drawers, partitions or shelves, etc.
3.8 Surface decoration
Decoration treatment which is carried out using coating, covering, edge sealing and
other processes on the surface or edges of wooden parts of furniture.
Note. The coating process includes scraping, brushing, wipe, pouring, rolling, extracting,
dipping, spraying, air spraying, airless spraying, electrostatic spraying and other processes.
4 Categories
The main components and product classification of wooden furniture are in Appendix A.
5 Requirements
5.1 Main dimensions and their deviations
The main dimensions and their deviations shall comply with the requirements of Table 1.
5.3 Material requirements
5.3.1 Wood moisture content (basic item)
The wood shall be dried and the wood moisture content shall be 8% ~ (the annual
average wood balance moisture content in the product area +1%). The annual average
timber balanced moisture content of all provinces (autonomous regions, special zones),
municipalities and major cities in China is in accordance with Appendix B.
5.3.2 Consistency between marking and physical objects (basic item)
The product marking, quality card, instructions for use, and express statements in the
sales contract shall be consistent with the wood, wood-based panel and its use parts
used in the product. See Appendix C for the standard of material name.
5.3.3 Requirements for wood-based panel materials (contract requirements or
arbitration inspection requirements)
Wood-based panels and decorative wood-based panels shall be inspected and judged
according to the standards agreed in the contract.
See Appendix C for commonly used wood-based panel standards.
5.4 Appearance requirements
The appearance requirements shall comply with the provisions of Table 3.
5.5 Physical and chemical properties
5.6 Mechanical properties
The mechanical properties of wooden furniture are shown in Table 6.Special test
conditions and requirements can be agreed upon by the supplier and the buyer and stated
in the contract.
5.7 Structural safety (basic item)
It shall comply with the corresponding provisions of GB 28008-2024.
5.8 Limited amount of hazardous substances (basic items)
It shall comply with the corresponding provisions of GB 18584-2024.The testing of
formaldehyde, benzene, toluene, xylene, total volatile organic compounds (TVOC) is
only applicable to indoor wooden furniture products.
5.9 Electrical safety (basic item)
The electrical part in the product shall comply with the relevant provisions of GB 44246-2024.
5.10 Flame retardancy (basic item)
The soft cladding in the product shall comply with the relevant provisions of GB 17927- 2024.
6 Test methods
6.1 Determination of main dimensions and their deviations
The test piece shall be placed on a flat panel or flat ground and measured using a steel
ruler or tape measure with accuracy of no less than level II. The dimensional deviation
is the difference between the product identification value and the measured value.
6.2 Shape and position tolerance measurement
6.2.1 Warpage
Warpage determination instrument with an accuracy of no less than 0.1 mm is used.
Select the panel with the most severe warpage; place the instrument on the diagonal
line of the panel for measurement; use the maximum distance as the measured value of warpage.
6.2.2 Flatness
A flatness measurement device with an accuracy of no less than 0.01 mm is used. Select
3 panels with the most severe unevenness; measure the distance between the reference
line within a length of 0 mm ~ 150 mm on their surface; use the maximum distance as
the flatness measurement value.
6.2.3 Adjacent edge perpendicularity
Use a steel ruler or steel tape measure with accuracy of no less than level II, to measure
the two diagonal lines and opposite sides of the rectangular panel or frame; the
difference is the measurement value of the adjacent side perpendicularity.
6.2.5 Parting
The measurement is performed using a feeler gauge with an accuracy of no less than
0.01 mm. Before measurement, the drawer or door shall be opened and closed 3 times,
to keep the drawer or door in the closed position.
6.2.6 Foot stability
Place the test piece on a flat plate or on a flat ground; use a feeler gauge with an accuracy
of no less than 0.01 mm, to measure the distance between the foot or bottom surface
and the flat plate; record the maximum value as the measured value.
6.2.7 Sag and swing
Determination is carried out using a steel ruler or steel tape measure with an accuracy
of no less than level II. Place the steel ruler or steel tape measure on the horizontal plane
and side adjacent to the measurement part of the test piece. Extend the test piece out of
two-thirds of the total length.
6.3 Material determination
6.4 Appearance determination
6.4.1 Wood insect worm
Use naked eyes to carefully check whether there are live insects or eggs or insect-
bearing powder in the wood material.
6.4.2 Decolorization, color fading
Check 3 positions on the outer surface or inner coating parts of the product. Use a wet
degreased white gauze with bare hands to wipe back and forth three times.
6.5 Determination of physical and chemical property
6.5.1 Physical and chemical properties of paint film coating
6.5.2 Physical and chemical performance test of cladding (flexible and overlaid)
6.5.2.1 Testing location
Generally, it can be used on the surface of the product horizontal components.
6.5.2.2 Hot & cold cycle resistance
According to the provisions of 4.40 in GB/T 17657-2022, the number of test pieces is 3.
6.5.2.10 Light-resistant color fastness
The length and width of the specimen shall be determined by the shape and size of the
equipment specimen holder; the blue wool cloth is level 6.It is performed according to
the provisions of 4.31 in GB/T 17657-2022.
6.5.3 Physical and chemical property test of glass parts
6.5.3.1 Heat shock resistance
The measurement is performed according to the method described in 6.5 in GB/T 32446-2024.
6.5.3.2 Surface dry heat resistance
The measurement is performed according to the method described in 6.5 in GB/T 32446-2024.
6.5.4 Physical and chemical property test of plastic parts
6.5.5 Physical and chemical property test of flexible cladding
6.5.5.1 Friction resistance color fastness
Textile fabrics and artificial leather are measured according to the method described in GB/T 3920-2008.
6.5.5.2 Textile fabric pH
The determination is performed according to the method described in GB/T 7573-2009.
6.5.5.3 Leather pH
The determination is performed according to the method described in QB/T 2724-2018.
6.5.5.4 Adhesion firmness of genuine leather and film leather (moving film leather)
coatings
The measurement is performed according to the method described in GB/T 39452-2020.
Samples are taken on the seat or back of the sample, or samples can also be taken on
the same material as the sample.
6.5.6 Corrosion resistance test of metal handles
The determination is performed according to the method described in QB/T 3826-1999.
6.6 Mechanical performance test
6.6.1 Strength and durability of tables
It is performed according to the provisions of GB/T 10357.1.The test level is selected
according to the applicable conditions; the test level 2 is generally selected.
6.6.2 Strength and durability of chair and stool
Chair and stools are in accordance with the provisions of GB/T 10357.3.The test level
is selected according to the applicable conditions; the test level 3 is generally selected.
6.6.9 Bunk bed stability
It is performed in accordance with the provisions of GB/T 24430-2023.
6.7 Structural safety
It is performed in accordance with the provisions of GB 28008-2024.
6.8 Limited content of hazardous substances
It is performed in accordance with the provisions of GB 18584-2024.
6.9 Electrical safety
The electrical safety in the product is carried out in accordance with the provisions of
No.1 in Table A.1 of GB 44246-2024.
6.10 Flame retardancy
It is performed in accordance with the provisions of GB 17927-2024.
7 Inspection rules
7.1 Inspection classification
Inspections are divided into exit-factory inspection and type inspection.
7.2 Exit-factory inspection
7.2.1 Exit-factory inspection items
Exit-factory inspection is the inspection of non-destructive items performed by the
product when it is exit-factory or when it is delivered, including the following items.
7.2.2 Sampling and batch grouping rules
Exit-factory inspections are subject to random sampling inspection. The sampling
inspection plan is based on the provisions of GB/T 2828.1-2012.Use the normal
inspection and one-time sampling, general inspection level II, the reception quality limit
(AQL) 6.5.
7.2.3 Judgement rules
7.3 Type Inspection
7.3.1 Inspection items
All items in Chapter 5 except contract requirements and arbitration inspection shall be
included.
7.3.2 Inspection timing
During formal production, inspection shall be carried out regularly. Type inspection
shall be carried out in one of the following situations.
7.3.3 Sampling rules
During one inspection cycle, 2 pieces (sets) of samples are randomly selected from the
same qualified batch of products with exit-factory inspection, of which 1 piece (set) is
sent for inspection and 1 piece (set) is sealed.
7.3.4 Inspection procedures
Follow the principle that does not affect the accuracy of subsequent inspection items.
7.4 Rules for determining test results
In the type inspection items, all basic items shall be in compliance; if there are no more
than 4 noncompliant items in general items, the product will be evaluated as a qualified
product. Those that are below the requirements of qualified products are unqualified
products. If all randomly taken samples are qualified according to 7.3.3, the type
inspection of this batch of products will be determined to be qualified.
7.5 Re-inspection rules
If the product fails the type inspection, it can be re-inspected once for the same batch
of samples (including sealed samples). The re-inspection item is the noncompliant items
in the first inspection or the uninspected items due to sample damage. It shall be
evaluated in accordance with the provisions of 7.4; the "re-inspection" shall be
indicated in the inspection results. Customized furniture without similar products will
no longer be tested.
8 Marking, instructions for use, packaging, transportation
and storage
8.1 Marking
Product markings shall include at least the following.
8.2 Instructions for use
The preparation of product instructions shall be in accordance with the provisions of
GB/T 5296.6; the content shall at least include.
8.3 Packaging
The product shall be packaged to prevent bumps, scratches, debris.
8.4 Transportation and storage
Products shall be stacked flat during transportation and storage; necessary protection
shall be provided to prevent pollution, insect erosion, moisture, exposure to the sun.
During storage, it shall be stacked separately according to category, specification, grade.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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