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GB/T 32446-2015 (GB/T32446-2015)

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GB/T 32446-2015: PDF in English (GBT 32446-2015)
GB/T 32446-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.140
Y 80
General Technical Requirements for Glass Furniture
ISSUED ON. DECEMBER 31, 2015
IMPLEMENTED ON. JULY 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee of the People’s
Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Terms and Definitions ... 5 
4 Classification ... 5 
5 Requirements... 6 
6 Test Methods ... 15 
7 Inspection Rules ... 19 
8 Marking, Instruction for Use, Packaging, Transportation and Storage ... 21 
General Technical Requirements for Glass Furniture
1 Scope
This Standard specifies the terms, definitions, requirements, test methods, inspection
rules, marking, packaging, transportation and storage of glass furniture.
This Standard is applicable to various glass furniture that is made of glass as the
primary material and wood or metal as the auxiliary materials.
2 Normative References
The following documents are indispensable to the application of this Standard. In terms
of references with a specified date, only versions with a specified date are applicable
to this Standard. The latest version (including all the modifications) of references
without a specified date is also applicable to this Standard.
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 3324-2008 Wooden Furniture - General Technical Requirements
GB/T 3325-2008 Metal Furniture - General Technical Requirements
GB 5296.6 Instructions for Use of Products of Consumer Interest - Part 6.
Furniture
GB/T 10357.1 Test of Mechanical Properties of Furniture - Part 1. Strength and
Durability of Tables
GB/T 10357.2 Test of Mechanical Properties of Furniture - Part 2. Stability of
Chairs and Stools
GB/T 10357.3 Test of Mechanical Properties of Furniture - Part 3. Strength and
Durability of Chairs and Stools
GB/T 10357.4 Test of Mechanical Properties of Furniture - Part 4. Stability of
Storage Units
GB/T 10357.5 Test of Mechanical Properties of Furniture - Part 5. Strength and
Durability of Storage Units
GB/T 10357.7 Test of Mechanical Properties of Furniture - Part 7. Stability of
Tables
d) Glass sliding doors.
5 Requirements
5.1 Main Dimensional Deviation (general items)
The limit deviation of the external width, depth and height of glass furniture product is
± 5 mm; the limit deviation of matching products or combined products shall be positive
or negative at the same time.
5.2 Tolerance of Shape and Position
Tolerance of shape and position shall comply with the stipulation in Table 1 below.
Table 1 -- Tolerance of Shape and Position
No. Test Item Requirement ClassificationBasic General
1 Warpage Panel, envisaged panel part, diagonal length
≥1400 ≤ 3.0 √
(700,
1400) ≤ 2.0 √
≤ 700 ≤ 1.0 √
2 Flatness Panel, envisaged panel part ≤ 0.2 √
3 Adjacent perpendicularity
Panel,
framework
Diagonal length
≥ 1000 Length difference ≤ 3 √
< 1000 Length difference ≤ 2 √
Length of
opposite side
≥ 1000 Opposite length difference ≤ 3 √
< 1000 Opposite length difference ≤ 2 √
4 Dislocation
Distance deviation (not the distance requested in design)
between door and framework, door and adjacent door surface,
drawer and framework, drawer and door, drawer and 2 adjacent
surfaces
≤ 2.0
5 Splitting All the splitting (not requested in design) ≤ 2.0 √
6 Footing smoothness ≤ 2.0 √
7 Drawer droop ≤ 20 √
8 Drawer swinging ≤ 15 √
5.3 Appearance Requirement
Appearance requirement shall comply with the stipulation in Table 2 below.
compact; seam of mold splitting shall not affect the
appearance
Other appearance requirements
There shall be no burr, cutting edge or corner
angle on parts that are exposed to human body or
collectibles
The connection of fixed parts shall be firm; there
shall be no missing part, missing nail or
penetrating nail (apart from reserved hole and
optional hole)
52 There shall be no de-coloration or color fading on all the coating surfaces √
Woodworking requirements
Non-contacting interface of artificial panel shall be
sealed or processed with coating √
Panel or part that contacts human beings or
storage area shall manifest no burr, cutting edge
or corner angle
The appearance of panel or part shall be smooth;
chamfered edge, circular bead or thread shall be
consistent
56 There shall be no degumming, bubble or crack on the sealed and covered edge √
57 The veneer shall be tight and flat; there shall be no obvious glue penetration √
58 The juncture of tenon, block and part shall manifest no breakage √
59 The juncture of part shall be tight and firm √
There shall be no missing part, missing nail or
penetrating nail in the installation of various parts
and adapting pieces (other than reserved hole and
optional hole)
The installation of various parts shall be rigorous,
flat and firm; the junctures shall manifest no crack
or loosening
62 After installation, switching-on/off part shall be flexible √
Engraved pattern shall be uniform, distinct and
well-bedded; symmetric part shall be symmetric;
there shall be no unfilled corner on convex and
concave, gap bridge, corner angle and arc;
shoved bottom shall be flat; there shall be no
hammering stamp or burr on each part. The
number of defects shall be < 4
64 The linear of wood piece shall be consistent; √
Table 4 -- Safety Requirements
No. Test Item Requirement ClassificationBasic General
1 Characteristic dimension
Characteristic dimension shall
comply with the stipulation in 5.1 in
GB 28008-2011
2 Processing Processing shall comply with the stipulation in 5.2 in GB 28008-2011 √
3 Appearance Appearance shall comply with the stipulation in 5.3 in GB 28008-2011 √
4 Structural strength
Structural strength shall comply
with the stipulation in 5.4 in GB
28008-2011
Physical and
chemical
properties
Thermal shock resistance of
tempered glass and its
laminated glass
It shall comply with the stipulation
in 5.5.1 in GB 28008-2011 √
Thermal shock resistance of
semi-tempered glass and its
laminated glass
It shall comply with the stipulation
in 5.5.2 in GB 28008-2011 √
Dry heat resistance on the
surface of glass parts
It shall comply with the stipulation
in 5.5.3 in GB 28008-2011 √
6 Limit of hazardous substance
Limit of hazardous substance shall
comply with the stipulation in GB
7 Wood and metal parts
Wood and metal parts shall comply
with the stipulation in 5.7 in GB
28008-2011
5.6 Mechanical Properties
Mechanical properties of glass furniture shall comply with the stipulation in Table 5
below.
Table 5 -- Mechanical Properties
No. Test Item Requirement ClassificationBasic General
1 Stability of tables
Comply with the
stipulation in GB/T
10357.7
There shall be no tipping-over after
test √
2 Strength and durability of tables
Comply with the
stipulation in GB/T
10357.1
1) There shall be no fracture or
crack on components;
2) There shall be no abrasion or
deformation that might severely
affect the function;
screens stipulation in GB 22792.2-2008
Bearable
glass
revolving
plate
Revolving
torque
After load is evenly distributed on the revolving plate,
initiate torque ≤ 7.0 Nm √
Unilateral
static
bearing
After unilateral load-bearing test, the revolving plate shall
have no contact with the junctures of framework, desktop
and revolving stage; there shall be no damage after test;
the revolving plate shall be flexibly movable
Vertical
impact
strength
After impact test, the revolving plate shall manifest no
damage and shall be flexible movable √
NOTE. GB/T 10357.1 ~GB/T 10357.7 series test shall comply with the grade negotiated and
determined by the demand side and the supply side
6 Test Methods
6.1 Main Dimensional Deviation
Place test sample on a flat or smooth ground; adopt straight steel ruler or steel tape
(minimum scale. 1 mm) to measure it. Dimensional deviation is the difference between
the indicated value and the actually measured value.
6.2 Tolerance of Shape and Position
Tolerance test of shape and position shall comply with the stipulation in 6.2 in GB/T
3324-2008.
6.3 Appearance
6.3.1 Glassware
In the test of movable parts of glassware, simulate the normal operating track of the
parts and examine links where problems might easily emerge.
In the test of surface engraving of glass parts, take the product as the sample, conduct
visual inspection and touch check at a distance of 600 mm from the sample under
favorable natural light and scattered illumination.
Requirements of glass parts processing shall comply with the stipulation in 6.2 in GB
28008-2011.
6.3.2 Wall thickness of metal parts
Adopt a measuring instrument (minimum scale < 0.1 mm) to measure it. Measure 3
values of the same part and take the average value as the measured value (accurate
to 0.1 mm).
6.6.3 Stability of storage units
Stability test of storage units shall comply with the stipulation in GB/T 10357.4.
6.6.4 Strength and durability of storage units
Strength and durability test of storage units shall comply with the stipulation in GB/T
10357.5.
6.6.5 Stability of chairs and stools
Stability test of chairs and stools shall comply with the stipulation in GB/T 10357.2.
6.6.6 Strength and durability of chairs and stools
Strength and durability test of chairs and stools shall comply with the stipulation in
GB/T 10357.3.
6.6.7 Mechanical properties of screens
Mechanical properties test of screens shall comply with the stipulation in GB/T
22792.3-2008.
6.6.8 Bearable glass revolving plate
6.6.8.1 Revolving plate torque
Load and evenly distribute loading at 1.0 kg/dm2 on the revolving plate. Impose
horizontal pull of tangential direction on any point of the edge of the revolving plate, till
it is about to be initiated. Record the revolving force F. Multiply the revolving force F by
the semidiameter of the revolving plate, the result is torque.
6.6.8.2 Static load test of unilateral revolving plate
Impose 45 N of load on any central line under a distance of 100 mm from the edge,
maintain for 10 s. After imposing for 10 times, examine the revolving plate.
6.6.8.3 Vertical impact strength test of revolving plate
Let a desktop impactor that complies with the stipulation in GB/T 10357.1 fall freely
from a vertical height of 140 mm (from the bottom of the impactor to the revolving plate).
Impact the central part of the revolving plate for 1 time. After the test, check the
revolving plate.
6.7 Adhesive Strength Test of Glass and Metal Connecting Plate
Use a preset torque wrench, then, load 40 Nm of torque along the tangential direction
of the diameter of the revolving plate; maintain for 10 s. Observe whether the
agglutinate parts are separated.
Within an inspection cycle, randomly draw 2 samples from recently produced products.
one of them shall be submitted for inspection, and the other one shall be sealed up for
safekeeping.
7.3.3 Inspection procedure
Inspection procedure shall comply with the principle of minimizing the influence on the
accuracy of the remaining inspection items.
7.4 Determination of Inspection Result
When a product is qualified in all the basic items and disqualified in < 4 general items,
this product shall be determined as qualified. When a product cannot satisfy the
requirements of qualified product, it shall be determined as disqualified.
7.5 Re-inspection Rules
When a product is determined as disqualified in model inspection, the sealed-up
sample can be used for re-inspection. In re-inspection, disqualified items and items
that are not inspected because of sample damage shall be inspected. Appraise it in
accordance with the stipulation in 7.4. Indicate “re-inspection” in the inspection result.
8 Marking, Instruction for Use, Packaging,
Transportation and Storage
8.1 Marking
Product marking shall at least include the following content.
a) Product name, specification and model number;
b) Name of main materials; serial number of standard;
c) Certificate of inspection; date of production;
d) Chinese name and address of manufacturer.
8.2 Instruction for Use
Instruction for use that complies with GB 5296.6 shall be provided; it shall at least
include the following content.
a) Product name, specification, model number and serial number of standard;
b) Main materials (glass) of product;
c) Limit of hazardous substances in wood pieces;
......
 
(Above excerpt was released on 2018-09-14, modified on 2022-02-20, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT32446-2015