Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 14531-2008 Office furniture—Tables, chairs and stools for reading. In addition to editorial changes, the following technical changes have been made with respect to GB/T 14531-2008:
—the timber quality requirements of man-made sheet requirements are canceled (see 4.1.2 and 4.1.3 of 2008 edition);
—the appearance requirement is modified (see 4.2; 4.2 of 2008 edition);
—Fits of the major dimensions of table and chair (stool) among those of product are added (see 4 3.1);
—the roundness requirement and test method in the shape and position tolerances are removed (see 4.4 and 5.4.5 of2008 edition);
—the requirements and test methods of the surface scratch-resistance, surface abrasion resistance, surface dry heat resistance, surface stain resistance, color fastness to light fastness, among the physical and chemical properties of wooden surface, are modified; the requirement and test method of the surface thermal shock resistance of decorative finish are removed; the requirement and test method of the resistance to impact of paint film are added (see 4.5.1 and 5.5.1; 4.5.2 and 5.5.2 of 2008 edition);
—the requirement and test method of the corrosion resistance, among the physicochemical properties of metal part coating are modified (see 4.5.3 and 5.5.3.5; 4.5.3.2 and 5.5.3.3 of 2008 edition);
—the requirements and test methods of the physical and chemical properties of soft upholstering (see 4.5.4 and 5.5.4; 4.5.4 and 5.5.4 of 2008 edition);
—the requirement and test method for reading tables with fixed lighting and outlets are added (see 4.7.1 and 5.7.1);
—the requirement and test method of the decomposable aromatic amines in product fabric are added (see 4.7.3 and 5.7.3);
—the determination of footing touchdown stabilization is modified (see 5.4.5; 5.4.6 of 2008 edition);
—the inspection rules are modified (see clause 6; clause 6 of 2008 edition).
This standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of SAC/TC 480 National Technical Committee on Furniture of Standardization Administration of China.
The previous editions of standard replaced by this standard are as follows:
—GB/T 14531-1993 and GB/T 14531-2008.
Office furniture—
Tables, chairs and stools for reading
1 Scope
This standard specifies requirements, test methods, inspection rules, instructions for use, product marking, packaging, transportation and storage for tables, chairs and stools for reading.
This standard applies to products like reading tables, chairs and stools for office applications such as library, archive and reading room.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1732 Determination of impact resistance of film
GB/T 1931 Method for determination of the moisture content of wood
GB/T 2099.1 Plugs and socket-outlets for household and similar purposes—Part 1: General requirements
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 General technical requirements for wooden furniture
GB/T 3920-2008 Textiles—Tests for color fastness—Color fastness to rubbing
GB/T 4689.20 Leather—Determination for adhesion of finish
GB/T 4893.1-2005 Furniture—Assessment of surface resistance to cold liquids
GB/T 4893.2-2005 Furniture—Assessment of surface resistance to wet heat
GB/T 4893.3-2005 Furniture—Assessment of surface resistance to dry heat
GB/T 4893.4-2013 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 4893.8-2013 Test of surface coatings of furniture—Part 8: Determination of wearability
GB/T 4893.9-2013 Test of surface coatings of furniture—Part 9: Determination of resistance to impact
GB/T 5296.6 Instructions for use of products of consumer interest—Part 6: Furniture
GB/T 6669-2008 Flexible cellular polymeric materials—Determination of compression set
GB/T 6670-2008 Flexible cellular polymeric materials—Determination of resilience by ball rebound
GB/T 6739 Paints and varnishes—Determination of film hardness by pencil test
GB 7000.201-2008 Luminaires—Part 2-1: Particular requirements—Fixed general purpose luminaires
GB/T 9286 Paints and varnishes—Cross cut test for films
GB/T 10357.1-2013 Test of mechanical properties of furniture—Part 1: Strength and durability of tables
GB/T 10357.2-2013 Test of mechanical properties of furniture—Part 2: Stability of chairs and stools
GB/T 10357.3-2013 Test of mechanical properties of furniture—Part 3: Strength and durability of chairs and stools
GB/T 10357.7-2013 Test of mechanical properties of furniture—Part 7: Stability of tables
GB/T 13667.1-2015 Steel bookshelves—Part 1: Bookshelf of single column and multi-column
GB/T 17657-2013 Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels
GB 18401 National general safety technical code for textile products
GB 18584 Indoor decorating and refurbishing materials—Limit of harmful substances of wood based furniture
GB 20400 Leather and fur—Limit of harmful matter
QB/T 3826 Corrosion-resistant testing method of the metal deposits and conversion coatings for the light industrial products—Neutral salt spraying test (NSS)
3 Terms and definitions
For the purpose of this standard, the terms and definitions specified in GB/T 3324 as well as the followings apply.
3.1
tables, chairs and stools for reading
furniture and supporting seating for reading at desks, for office applications, e.g. books, information, archives, and materials.
4 Requirements
4.1 Moisture content in wood (basic item)
Wood shall be subjected to drying treatment and the moisture content of wood shall range from 8% to the annual average equilibrium moisture content in wood at the product location plus +1%. For the annual average equilibrium moisture content of wood throughout China, GB/T 3324 applies.
4.2 Appearance
The appearance requirements shall be in accordance with those specified in Table 1.
The “*” mark in Table 1 indicates that there are more than 2 items (including 2 items) in the single item. If one of the items fails to meet the requirements, it shall be counted as one failure. If a single defect is so significant that affects the quality of the product, it shall be judged as a basic item.
Table 1 Appearance requirements
No. Inspection item Requirements Item classification
Basic General
1 Wooden part appearance Through crack There shall be no through crack. √
2 Worm damage There shall be no signs of worm damage in wooden furniture. √
3 Rotting There shall be no rotting on the outer surface; minor rotting is allowed on the inner surface but shall have an area not exceeding 20% of the part area. √
4 Pitch pocket There shall be no pitch pockets on outer surfaces or materials for application of storing articles. √
5 Knot The knot on outer surface shall have a width not exceeding 1/3 of the material width and a diameter not exceeding 12 mm (unless otherwise specified in special design). √
6 Dead knot, hole, bark pocket, resin duct and gum canal These shall be subjected to repair processing (except those with an individual length or diameter less than 5mm). After repair, there shall be no more than 4 defects on outer surface and no more than 6 defects on inner surface (unless otherwise specified in the design). √
7 Other minor material defect Defects such as crack (other than through crack), and wane shall be subjected to repair processing. √
8 Artificial board appearance Dry/wet spot The outer surface shall be free from dry/wet spot. √
9 The area of any dry/wet spot on the inner surface shall be less than or equal to 5% of the board area. √
10 Stain spot One stain spot with an area of 3mm2~ 30mm2 is allowed on the outer surface of the same board. √
11 Surface scratch The outer surface shall be free of apparent scratch. √
12 Surface indentation The outer surface shall be free of apparent scratch. √
13 Color difference The outer surface shall be free from apparent color difference. √
14 Blistering, crazing and delamination The outer surface shall be free from blistering, crazing and delamination. √
15 Hardware appearance Electroplated part The plating surface shall be free from rust, blur and exposed base. √
16 The plating surface shall be smooth and flat as well as free from blistering, yellowing, spot, burn, crack, scratch, knocked/bumped damage. *√
17 Coated part the coating shall be free from missing spraying and rust √
18 The coating shall be smooth, uniform in color and luster, and free from sagging, lumping, wrinkling and splatter. *√
19 Metal alloy part It shall be free from rust, oxide film shedding, cutting edge and sharp edge. √
20 The surface shall be fine and free from cracks, burrs, black spots, etc. *√
21 Welded part The welded position shall be firm and free from sealing-off, weak welding and burn-through. √
22 The weld shall be uniform and free from defects such as burr, sharp edge, spattering and crack. *√
23 Glass part appearance The exposed periphery shall be subjected to polishing treatment and the installation shall be firm and solid. √
24 The glass shall be smooth, clean, and free from defects such as crack, scratch, sand grain, lump and pit. *√
25 Soft upholstering requirements The spliced symmetrical pattern on cladding fabric shall be complete; the fluffs of sueded fabrics at the same position shall be in the same direction and shall be free from visible color difference. *√
26 The cladding fabric shall be free from scratch, color dirt, oil stain, fuzzing and balling up. *√
27 The surface of soft cladding shall be 1) flat, full, uniform in tightness, and free of obvious wrinkling; 2) well-balanced and distinctively gradated in symmetric technical wrinkling, if any *√
28 The inserted line in soft surface shall be 1) round, smooth and straight; 2) symmetrical at round corner; 3) free from apparent floating thread, skipping stitch or exposed thread end. *√
29 Exposed deep buttons shall be 1) regularly arranged and basically equal-spaced; 2) and free from apparent flattening or depainting. *√
30 Woodwork requirements Non-mating face of artificial board part shall be subjected to edge banding or finishing treatment. √
31 The position of board or part to contact human body or store article shall be free from burr, cutting edge or sharp edges. √
32 The outer surface of board or part shall be smooth and consistent in chamfering, round corner and round line. *√
33 Veneering, banding and hemming shall be free of degumming, blistering and cracking. √
34 Veneering shall be tight, flat, smooth, and free from glue penetration. √
35 Juncture of tenon, plug corner and part shall be free from fracture. √
36 Bonding of part shall be tight and free from looseness. √
37 Installation of fittings and connecting pieces shall be free from missing, leakage and penetration (except for reserved hole and selected hole). √
38 Woodwork requirements The installation of various fittings shall be tight, regular, straight and solid, and the juncture shall be free of cracking and looseness. √
39 Opening/closing parts as installed shall be flexible in operation. √
40 Engraved pattern shall be uniform, distinct and well arranged. Symmetrical parts shall be symmetrical. Concave-convex part, deep excavation, gap bridge, pointedness and arc positions shall be free of missed corners. The spaded bottom shall be flat and smooth. All the positions shall be free from hammered mark and burr. Each defect shall not exceed 4 in positions. *√
41 The rounded lines shall be consistent; concave and convex steps shall be symmetrical; the symmetrical parts shall be symmetrical; the turned lines shall be distinct; processed surfaces shall be free from timber crumble, tool mark and sand mark. Each defect shall not exceed 4 in positions. *√
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test Methods
6 Inspection rules
7 Marking, instructions for use, packaging, transport and storage of product
Annex A (Informative) Banned decomposable aromatic amines
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 14531-2008 Office furniture—Tables, chairs and stools for reading. In addition to editorial changes, the following technical changes have been made with respect to GB/T 14531-2008:
—the timber quality requirements of man-made sheet requirements are canceled (see 4.1.2 and 4.1.3 of 2008 edition);
—the appearance requirement is modified (see 4.2; 4.2 of 2008 edition);
—Fits of the major dimensions of table and chair (stool) among those of product are added (see 4 3.1);
—the roundness requirement and test method in the shape and position tolerances are removed (see 4.4 and 5.4.5 of2008 edition);
—the requirements and test methods of the surface scratch-resistance, surface abrasion resistance, surface dry heat resistance, surface stain resistance, color fastness to light fastness, among the physical and chemical properties of wooden surface, are modified; the requirement and test method of the surface thermal shock resistance of decorative finish are removed; the requirement and test method of the resistance to impact of paint film are added (see 4.5.1 and 5.5.1; 4.5.2 and 5.5.2 of 2008 edition);
—the requirement and test method of the corrosion resistance, among the physicochemical properties of metal part coating are modified (see 4.5.3 and 5.5.3.5; 4.5.3.2 and 5.5.3.3 of 2008 edition);
—the requirements and test methods of the physical and chemical properties of soft upholstering (see 4.5.4 and 5.5.4; 4.5.4 and 5.5.4 of 2008 edition);
—the requirement and test method for reading tables with fixed lighting and outlets are added (see 4.7.1 and 5.7.1);
—the requirement and test method of the decomposable aromatic amines in product fabric are added (see 4.7.3 and 5.7.3);
—the determination of footing touchdown stabilization is modified (see 5.4.5; 5.4.6 of 2008 edition);
—the inspection rules are modified (see clause 6; clause 6 of 2008 edition).
This standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of SAC/TC 480 National Technical Committee on Furniture of Standardization Administration of China.
The previous editions of standard replaced by this standard are as follows:
—GB/T 14531-1993 and GB/T 14531-2008.
Office furniture—
Tables, chairs and stools for reading
1 Scope
This standard specifies requirements, test methods, inspection rules, instructions for use, product marking, packaging, transportation and storage for tables, chairs and stools for reading.
This standard applies to products like reading tables, chairs and stools for office applications such as library, archive and reading room.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1732 Determination of impact resistance of film
GB/T 1931 Method for determination of the moisture content of wood
GB/T 2099.1 Plugs and socket-outlets for household and similar purposes—Part 1: General requirements
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 General technical requirements for wooden furniture
GB/T 3920-2008 Textiles—Tests for color fastness—Color fastness to rubbing
GB/T 4689.20 Leather—Determination for adhesion of finish
GB/T 4893.1-2005 Furniture—Assessment of surface resistance to cold liquids
GB/T 4893.2-2005 Furniture—Assessment of surface resistance to wet heat
GB/T 4893.3-2005 Furniture—Assessment of surface resistance to dry heat
GB/T 4893.4-2013 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 4893.8-2013 Test of surface coatings of furniture—Part 8: Determination of wearability
GB/T 4893.9-2013 Test of surface coatings of furniture—Part 9: Determination of resistance to impact
GB/T 5296.6 Instructions for use of products of consumer interest—Part 6: Furniture
GB/T 6669-2008 Flexible cellular polymeric materials—Determination of compression set
GB/T 6670-2008 Flexible cellular polymeric materials—Determination of resilience by ball rebound
GB/T 6739 Paints and varnishes—Determination of film hardness by pencil test
GB 7000.201-2008 Luminaires—Part 2-1: Particular requirements—Fixed general purpose luminaires
GB/T 9286 Paints and varnishes—Cross cut test for films
GB/T 10357.1-2013 Test of mechanical properties of furniture—Part 1: Strength and durability of tables
GB/T 10357.2-2013 Test of mechanical properties of furniture—Part 2: Stability of chairs and stools
GB/T 10357.3-2013 Test of mechanical properties of furniture—Part 3: Strength and durability of chairs and stools
GB/T 10357.7-2013 Test of mechanical properties of furniture—Part 7: Stability of tables
GB/T 13667.1-2015 Steel bookshelves—Part 1: Bookshelf of single column and multi-column
GB/T 17657-2013 Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels
GB 18401 National general safety technical code for textile products
GB 18584 Indoor decorating and refurbishing materials—Limit of harmful substances of wood based furniture
GB 20400 Leather and fur—Limit of harmful matter
QB/T 3826 Corrosion-resistant testing method of the metal deposits and conversion coatings for the light industrial products—Neutral salt spraying test (NSS)
3 Terms and definitions
For the purpose of this standard, the terms and definitions specified in GB/T 3324 as well as the followings apply.
3.1
tables, chairs and stools for reading
furniture and supporting seating for reading at desks, for office applications, e.g. books, information, archives, and materials.
4 Requirements
4.1 Moisture content in wood (basic item)
Wood shall be subjected to drying treatment and the moisture content of wood shall range from 8% to the annual average equilibrium moisture content in wood at the product location plus +1%. For the annual average equilibrium moisture content of wood throughout China, GB/T 3324 applies.
4.2 Appearance
The appearance requirements shall be in accordance with those specified in Table 1.
The “*” mark in Table 1 indicates that there are more than 2 items (including 2 items) in the single item. If one of the items fails to meet the requirements, it shall be counted as one failure. If a single defect is so significant that affects the quality of the product, it shall be judged as a basic item.
Table 1 Appearance requirements
No. Inspection item Requirements Item classification
Basic General
1 Wooden part appearance Through crack There shall be no through crack. √
2 Worm damage There shall be no signs of worm damage in wooden furniture. √
3 Rotting There shall be no rotting on the outer surface; minor rotting is allowed on the inner surface but shall have an area not exceeding 20% of the part area. √
4 Pitch pocket There shall be no pitch pockets on outer surfaces or materials for application of storing articles. √
5 Knot The knot on outer surface shall have a width not exceeding 1/3 of the material width and a diameter not exceeding 12 mm (unless otherwise specified in special design). √
6 Dead knot, hole, bark pocket, resin duct and gum canal These shall be subjected to repair processing (except those with an individual length or diameter less than 5mm). After repair, there shall be no more than 4 defects on outer surface and no more than 6 defects on inner surface (unless otherwise specified in the design). √
7 Other minor material defect Defects such as crack (other than through crack), and wane shall be subjected to repair processing. √
8 Artificial board appearance Dry/wet spot The outer surface shall be free from dry/wet spot. √
9 The area of any dry/wet spot on the inner surface shall be less than or equal to 5% of the board area. √
10 Stain spot One stain spot with an area of 3mm2~ 30mm2 is allowed on the outer surface of the same board. √
11 Surface scratch The outer surface shall be free of apparent scratch. √
12 Surface indentation The outer surface shall be free of apparent scratch. √
13 Color difference The outer surface shall be free from apparent color difference. √
14 Blistering, crazing and delamination The outer surface shall be free from blistering, crazing and delamination. √
15 Hardware appearance Electroplated part The plating surface shall be free from rust, blur and exposed base. √
16 The plating surface shall be smooth and flat as well as free from blistering, yellowing, spot, burn, crack, scratch, knocked/bumped damage. *√
17 Coated part the coating shall be free from missing spraying and rust √
18 The coating shall be smooth, uniform in color and luster, and free from sagging, lumping, wrinkling and splatter. *√
19 Metal alloy part It shall be free from rust, oxide film shedding, cutting edge and sharp edge. √
20 The surface shall be fine and free from cracks, burrs, black spots, etc. *√
21 Welded part The welded position shall be firm and free from sealing-off, weak welding and burn-through. √
22 The weld shall be uniform and free from defects such as burr, sharp edge, spattering and crack. *√
23 Glass part appearance The exposed periphery shall be subjected to polishing treatment and the installation shall be firm and solid. √
24 The glass shall be smooth, clean, and free from defects such as crack, scratch, sand grain, lump and pit. *√
25 Soft upholstering requirements The spliced symmetrical pattern on cladding fabric shall be complete; the fluffs of sueded fabrics at the same position shall be in the same direction and shall be free from visible color difference. *√
26 The cladding fabric shall be free from scratch, color dirt, oil stain, fuzzing and balling up. *√
27 The surface of soft cladding shall be 1) flat, full, uniform in tightness, and free of obvious wrinkling; 2) well-balanced and distinctively gradated in symmetric technical wrinkling, if any *√
28 The inserted line in soft surface shall be 1) round, smooth and straight; 2) symmetrical at round corner; 3) free from apparent floating thread, skipping stitch or exposed thread end. *√
29 Exposed deep buttons shall be 1) regularly arranged and basically equal-spaced; 2) and free from apparent flattening or depainting. *√
30 Woodwork requirements Non-mating face of artificial board part shall be subjected to edge banding or finishing treatment. √
31 The position of board or part to contact human body or store article shall be free from burr, cutting edge or sharp edges. √
32 The outer surface of board or part shall be smooth and consistent in chamfering, round corner and round line. *√
33 Veneering, banding and hemming shall be free of degumming, blistering and cracking. √
34 Veneering shall be tight, flat, smooth, and free from glue penetration. √
35 Juncture of tenon, plug corner and part shall be free from fracture. √
36 Bonding of part shall be tight and free from looseness. √
37 Installation of fittings and connecting pieces shall be free from missing, leakage and penetration (except for reserved hole and selected hole). √
38 Woodwork requirements The installation of various fittings shall be tight, regular, straight and solid, and the juncture shall be free of cracking and looseness. √
39 Opening/closing parts as installed shall be flexible in operation. √
40 Engraved pattern shall be uniform, distinct and well arranged. Symmetrical parts shall be symmetrical. Concave-convex part, deep excavation, gap bridge, pointedness and arc positions shall be free of missed corners. The spaded bottom shall be flat and smooth. All the positions shall be free from hammered mark and burr. Each defect shall not exceed 4 in positions. *√
41 The rounded lines shall be consistent; concave and convex steps shall be symmetrical; the symmetrical parts shall be symmetrical; the turned lines shall be distinct; processed surfaces shall be free from timber crumble, tool mark and sand mark. Each defect shall not exceed 4 in positions. *√
Contents of GB/T 14531-2017
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test Methods
6 Inspection rules
7 Marking, instructions for use, packaging, transport and storage of product
Annex A (Informative) Banned decomposable aromatic amines
