GB 1523-2026 Wool English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB 1523-2026
Wool
绵羊毛
Issue date: 2026-06-27 Implementation date: 2027-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Sampling
6 Test methods
7 Inspection requirements
8 Inspection certificate
9 Packaging, marking, storage and transportation
Annex A (normative) Correspondence between mean fibre diameter and quality number of wool
Annex B (normative) Test method for native fine wool content (mass fraction)
Bibliography
Wool
1 Scope
This document specifies the type specifications (or grades), technical requirements, inspection requirements, inspection certificate, packaging, marking, storage, transportation and re-inspection requirements for wool, and describes the sampling methods and test methods for wool.
This document is applicable to the production, trading, processing, quality supervision and import inspection and appraisal of wool.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 6500, Test method for moisture regain of hair fibres — Oven drying method
GB/T 6529, Textiles — Standard atmospheres for conditioning and testing
GB/T 6976, Test method for natural length of wool staples
GB/T 6977, Test method for ethanol extractives, ash, vegetable matter and total alkali-insoluble matter in scoured wool
GB/T 8170, Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 10685, Test method for wool fibre diameter — Projection microscope method
GB/T 14270, Test method for fibre type content of hair fibres
GB/T 14271, Test method for scoured yield of hair fibres — Oil pressure method
GB 18267, Cashmere
GB/T 21030, Test method for average diameter and distribution of wool and other animal fibres — Optical fibre diameter analyser method
GB/T 27629, Test method for breaking strength of hair bundles
GB/T 35935, Test method for average diameter and distribution of animal hair fibres — Laser scanning fibre diameter analysis method
GB/T 41558, Test method for staple length and strength
GB/T 43170, Wool — Sampling and testing rules
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
wool
Fibres obtained from sheep (Ovis aries).
Note: According to the degree of homogeneity, wool can be classified as homogeneous wool (3.2), partially homogeneous wool (3.5) and heterogeneous wool (3.3).
[Source: GB/T 11951-2018, 3.1.3.1]
3.2
homogeneous wool
Wool (3.1) composed of a single type of fibre.
Note: According to the mean fibre diameter range, homogeneous wool is classified into three types: superfine wool (3.8), fine wool (3.9) and medium-fine wool (3.10).
3.3
heterogeneous wool
Wool (3.1) composed of different types of fibres.
Note: Different types of fibres include non-medullated fibres, medullated fibres and hetero-type fibres. For related definitions, see GB/T 14270.
3.4
fleece
Wool (3.1) removed from a live sheep, with staples interconnected in a tight web-like formation.
3.5
partially homogeneous wool
Wool (3.1) in which most staples in the fleece (3.4) are of homogeneous wool form, with a small portion being of heterogeneous wool form.
3.6
skirting wool
Fibres removed from the edges of the fleece (3.4) that are clearly different from the main body wool.
3.7
head, leg and tail wool
Fibres removed from the head, legs and tail of a sheep.
3.8
superfine wool
Homogeneous wool (3.2) with a mean fibre diameter of 19.0 μm or less.
3.9
fine wool
Homogeneous wool (3.2) with a mean fibre diameter in the range of 19.1 μm to 25.0 μm.
3.10
medium-fine wool
Homogeneous wool (3.2) with a mean fibre diameter in the range of 25.1 μm to 55.0 μm.
3.11
native wool
Fibres obtained from sheep that have not been improved and retain their original breed characteristics.
3.12
native fine wool
Native wool (3.11) with a fibre diameter of 30 μm or less.
3.13
improved wool
Fibres obtained from crossbred sheep in the process of improvement that have not yet reached homogeneity.
3.14
coarse-cavity hair
Fibres with a diameter of 52.5 μm or more, or with a medulla length of 25 mm or more when projected at 500× magnification.
Note: Coarse hair refers to fibres with a diameter of 52.5 μm or more. Cavity hair refers to fibres with a medulla length of 25 mm or more when projected at 500× magnification.
3.15
kemp hair
Fibres with a flattened, horseshoe-shaped cross-section, a well-developed medulla, very thin or absent cortex layer, dry appearance, dull white colour, brittle and easily broken, and difficult to dye.
3.16
faulty wool; defective wool
Wool with defects.
Note: Includes branded wool (3.17), yellow-stained wool (3.18), dung-stained wool (3.19), burry wool (3.20), hard felted wool (3.21), coloured wool (3.22), scabby wool (3.23) and tender wool (3.24).
GB 1523-2026 Wool English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB 1523-2026
Wool
绵羊毛
Issue date: 2026-06-27 Implementation date: 2027-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Sampling
6 Test methods
7 Inspection requirements
8 Inspection certificate
9 Packaging, marking, storage and transportation
Annex A (normative) Correspondence between mean fibre diameter and quality number of wool
Annex B (normative) Test method for native fine wool content (mass fraction)
Bibliography
Wool
1 Scope
This document specifies the type specifications (or grades), technical requirements, inspection requirements, inspection certificate, packaging, marking, storage, transportation and re-inspection requirements for wool, and describes the sampling methods and test methods for wool.
This document is applicable to the production, trading, processing, quality supervision and import inspection and appraisal of wool.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 6500, Test method for moisture regain of hair fibres — Oven drying method
GB/T 6529, Textiles — Standard atmospheres for conditioning and testing
GB/T 6976, Test method for natural length of wool staples
GB/T 6977, Test method for ethanol extractives, ash, vegetable matter and total alkali-insoluble matter in scoured wool
GB/T 8170, Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 10685, Test method for wool fibre diameter — Projection microscope method
GB/T 14270, Test method for fibre type content of hair fibres
GB/T 14271, Test method for scoured yield of hair fibres — Oil pressure method
GB 18267, Cashmere
GB/T 21030, Test method for average diameter and distribution of wool and other animal fibres — Optical fibre diameter analyser method
GB/T 27629, Test method for breaking strength of hair bundles
GB/T 35935, Test method for average diameter and distribution of animal hair fibres — Laser scanning fibre diameter analysis method
GB/T 41558, Test method for staple length and strength
GB/T 43170, Wool — Sampling and testing rules
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
wool
Fibres obtained from sheep (Ovis aries).
Note: According to the degree of homogeneity, wool can be classified as homogeneous wool (3.2), partially homogeneous wool (3.5) and heterogeneous wool (3.3).
[Source: GB/T 11951-2018, 3.1.3.1]
3.2
homogeneous wool
Wool (3.1) composed of a single type of fibre.
Note: According to the mean fibre diameter range, homogeneous wool is classified into three types: superfine wool (3.8), fine wool (3.9) and medium-fine wool (3.10).
3.3
heterogeneous wool
Wool (3.1) composed of different types of fibres.
Note: Different types of fibres include non-medullated fibres, medullated fibres and hetero-type fibres. For related definitions, see GB/T 14270.
3.4
fleece
Wool (3.1) removed from a live sheep, with staples interconnected in a tight web-like formation.
3.5
partially homogeneous wool
Wool (3.1) in which most staples in the fleece (3.4) are of homogeneous wool form, with a small portion being of heterogeneous wool form.
3.6
skirting wool
Fibres removed from the edges of the fleece (3.4) that are clearly different from the main body wool.
3.7
head, leg and tail wool
Fibres removed from the head, legs and tail of a sheep.
3.8
superfine wool
Homogeneous wool (3.2) with a mean fibre diameter of 19.0 μm or less.
3.9
fine wool
Homogeneous wool (3.2) with a mean fibre diameter in the range of 19.1 μm to 25.0 μm.
3.10
medium-fine wool
Homogeneous wool (3.2) with a mean fibre diameter in the range of 25.1 μm to 55.0 μm.
3.11
native wool
Fibres obtained from sheep that have not been improved and retain their original breed characteristics.
3.12
native fine wool
Native wool (3.11) with a fibre diameter of 30 μm or less.
3.13
improved wool
Fibres obtained from crossbred sheep in the process of improvement that have not yet reached homogeneity.
3.14
coarse-cavity hair
Fibres with a diameter of 52.5 μm or more, or with a medulla length of 25 mm or more when projected at 500× magnification.
Note: Coarse hair refers to fibres with a diameter of 52.5 μm or more. Cavity hair refers to fibres with a medulla length of 25 mm or more when projected at 500× magnification.
3.15
kemp hair
Fibres with a flattened, horseshoe-shaped cross-section, a well-developed medulla, very thin or absent cortex layer, dry appearance, dull white colour, brittle and easily broken, and difficult to dye.
3.16
faulty wool; defective wool
Wool with defects.
Note: Includes branded wool (3.17), yellow-stained wool (3.18), dung-stained wool (3.19), burry wool (3.20), hard felted wool (3.21), coloured wool (3.22), scabby wool (3.23) and tender wool (3.24).
