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GB/T 2666-2026Trousers (English PDF)

西裤

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 2, 2026

Implementation date

August 1, 2027

Scope

GB/T 2666-2026 is the English-translated version of 西裤.

GB/T 2666-2026 is the Chinese standard "Trousers". Its scope clause reads: This document specifies the requirements, inspection rules, marking, packaging, transport and storage for the trousers and skirt suits, and describes the corresponding test method.

This document applies to trousers and skirt suits mainly made of woven fabrics such as pure wool, wool blends and interwoven fabrics and wool-like fabrics. This document is not applicable to clothing for infants aged 36 months and below. Its clauses include terms and definitions; requirements.

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Document preview — GB/T 2666-2026

National Standard of the People's Republic of China

ICS: 61.020
Classification: Y 76
Replacing: GB/T 2666-2017

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Inspection methods
6 Inspection rules
7 Marking, packaging, transport and storage

1 Scope

This document specifies the requirements, inspection rules, marking, packaging, transport and storage for the trousers and skirt suits, and describes the corresponding test method. This document applies to trousers and skirt suits mainly made of woven fabrics such as pure wool, wool blends and interwoven fabrics and wool-like fabrics.

This document is not applicable to clothing for infants aged 36 months and below.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions 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 250 Textiles - Tests for colour fastness - Grey scale for assessing change in colour

GB/T 1335 (All parts) Standard sizing systems for garments

GB/T 3917.2 Textiles - Tear properties of fabrics - Part 2: Determination of tear force of trouser-shaped test specimens (Single tear method)

GB/T 4802.1-2008 Textiles - Determination of fabric propensity to surface fuzzing and to pilling - Part 1: circular locus method

GB/T 4841.3 Colour cards of standard depths for dyeing with dyestuffs 2/1, 1/3, 1/6, 1/12, 1/25

GB/T 5296.4 Instructions for use of products of consumer interest - Part 4: Textiles and apparel

GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values

GB/T 8629-2017 Textiles - Domestic washing and drying procedures for textile testing

GB/T 8630 Textiles - Determination of dimensional change in washing and drying

GB/T 14304 Sizes for woolen suits

GB/T 14801 Test method for skewness and bow in woven and knitted fabrics

GB 18401 National general safety technical code for textile products

GB/T 21294-2024 Testing methods of physical and chemical performance of garments

GB/T 21295-2024 Requirements of physical and chemical performance of garments

GB/T 23322 Textiles - Determination of surfactant - Alkylphenols and alkylphenol ethoxylates

GB/T 29257 Textiles - Evaluation of the wrinkle recovery of fabrics - Appearance method

GB/T 29862 Textiles - Identification of fiber content

GB 31701 Safety technical code for infants and children textile products

GB/T 31702 Testing method for sharpness of attached components on textile products

GB/T 31907 Method of garment measurement

FZ/ T 80002 Marking, packaging, transportation and storage for garments

FZ/T 80004 Rule for garments delivery inspection

FZ/T 80007.3-2023 Dry wash resistance test method for garments used adhesive interlining

3 Terms and definitions

No terms and definitions are specified in this document.

4 Requirements

4.1 Instructions for use

The instructions for use of the product shall comply with the requirements of GB/T 5296.4, and products for children aged over 3 years and up to 14 years shall also comply with the requirements of GB 31701.

4.2 Size specifications

4.2.1

Size specification shall be set according to the requirements of GB/T 1335 (all parts).

4.2.2

The main part dimensions shall be designed independently in accordance with the relevant provisions of GB/T 1335 (all parts) and GB/T 14304.

4.3 Raw materials

Shell and lining shall meet the relevant requirements of this standard. The linings, sewing threads and other accessories used shall be compatible with the shell; buttons, decorative buttons, zippers and other accessories shall be smooth on the surface, free from burrs, defects, flaws, and free from accessible sharp points and sharp edges. Zippers shall engage and operate smoothly.

4.4 Warp and weft yarn directions

The warp and weft yarn directions of the shell shall meet those specified in Table 1. Heavily milled, brushed, and napped products are not assessed for warp and weft yarn directions. Except for special design.

Table 1 Requirements for warp and weft yarn directions

Dimensions in centimetre

Part Provisions on warp and weft yarn direction

Front The warp yarns shall be aligned with reference to the crease line. The skewness below the crotch line shall not exceed 0.5, and for yarn-dyed striped or checked fabrics, the skewness shall not exceed 0.2.

Back The warp yarns shall be aligned with reference to the crease line. The skewness below the knee line shall not exceed 1.0, and for yarn-dyed striped or checked fabrics, the skewness shall not exceed 0.5.

4.5 Matching of stripes and plaids

4.5.1

The skewness of striped or plaid patterns shall not exceed 2 %, except for special design.

4.5.2

Fabrics with obvious stripes or plaids of 1.0 cm or more in width shall meet the requirements of Table 2, except for special design.

Table 2 Requirements of strip and plaid matching

Dimensions in centimetre

Part Requirements on various parts

Side seam Plaids below the crotch line shall be horizontally aligned with a tolerance not exceeding 0.2.

Front and back crotch seam Stripes shall be aligned with stripes, and plaids shall be horizontally aligned. The tolerance shall not exceed 0.3

Inseam Plaids below the knee line shall be horizontally aligned with a tolerance not exceeding 0.2.

Pocket flap and bodice Stripes shall be aligned with stripes, and plaids with plaids, with a tolerance not exceeding 0.2.

4.5

Stripes and plaids with colour cycles shall be aligned according to the cycle.

4.5.4

For fabrics with directional pile/nap or directional stripes/plaids, the direction shall be consistent throughout the garment.

4.6 Color difference

4.6.1

The colour difference between the inseam/waistband and the bodice shall be not […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Editions of GB/T 2666

Edition	Title	Revision	Status
GB/T 2666-2026	Trousers	current edition	Current
GB/T 2666-2017	Trousers	previous edition	In force until 1 August 2027

This page sells the current edition, GB/T 2666-2026. Earlier editions are listed for reference only.

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