GB/T 22849-2024
Knitted T-shirt (English Version)

Standard No.

GB/T 22849-2024

Language

Chinese, Available in English version

Release Date

2024

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China  CN  /  GB

Latest

GB/T 22849-2024

Replace

GB/T 22849-2014

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Introduction

1. Standard Overview

The national standard for knitted T-shirts GB/T 22849-2024 was issued in 2024, replacing the old standard GB/T22849-2014. This standard is mainly applicable to all kinds of knitted T-shirts made mainly of knitted fabrics, excluding products for infants and young children aged 36 months and below.

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2. Comparison of standard frameworks

Dimensions	Old version GB/T22849—2014	New version GB/T22849—2024
Terms and definitions	Definition of fluorescent color is not included	Terms and definitions of “fluorescent color” are added
Size marking	Principles for marking of sizes beyond the range are not clarified	Principles for marking of sizes beyond the range are added
Color fastness requirements	Including splicing mutual color fastness	New requirements for dry cleaning dimensional change rate, dry cleaning color fastness, etc.

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3. Intrinsic quality requirements

Table 1: Comparison of intrinsic quality requirements

Item	Superior product	First-class product	Qualified product
Burst strength (N)	≥250 ±3.0	-3.0~+1.5	-5.0~+2.0
Dimensional change rate after washing (%)	≤3.0	≤4.0	≤5.0

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4. Appearance quality requirements

Table 2: Surface defect evaluation and grading regulations

Defect name	Superior product	First-class product	Qualified product
Color difference grade	≥4-5	Between main materials ≥4-5	Between main materials ≥4

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5. Implementation Suggestions

Case Study: Light Fastness Test of Fluorescent T-shirts

For products using fluorescent dyes, special attention should be paid to their light fastness. It is recommended that manufacturers conduct pre-tests when selecting dyes to ensure that they meet the standard requirements. At the same time, consumers should avoid prolonged exposure to strong light when purchasing such products.

GB/T 22849-2024 Referenced Document

• FZ/T 01026 Quantitative chemical analysis of textiles with multicomponent fiber mixtures
• FZ/T 01101 Textile test method.Fiber content.Quantitative physical analysis
• FZ/T 70014 A series of size of knitted T-shirt
• GB 18401 National general safety technical code for textile products
• GB 31701 Safety technical code for infants and children textile products
• GB/T 14576 Textiles.Tests for colour fastness.Colour fastness to light of textiles wetted with artificial perspiration
• GB/T 14801 Test method for skewness and bow in woven and knitted fabrics
• GB/T 17592 Textiles Determination of banned azo dyes
• GB/T 19976 Textiles.Determination of bursting strength.Steel ball method
• GB/T 250 Textiles.Tests for colour fastness.Grey scale for assessing change in colour
• GB/T 251 Textiles.Tests for colour fastness.Grey scale for assessing staining
• GB/T 2910 Textile--Binary fibre mixtures--Quantitative chemical analysis
• GB/T 2912.1 Determination of formaldehyde in textiles
• GB/T 29862 Textiles—Identification of fibre content
• GB/T 31127-2014 Textiles.Tests for colour fastness.Colour fastness to transfer in joints
• GB/T 38015 Textiles—Quantitative chemical analysis—Mixtures of elastane and certain other fibers
• GB/T 3920 Fabric colorfastness test rubbing colorfastness*， 2024-12-31 Update
• GB/T 3921-2008 Textiles.Tests for colour fastness.Colour fastness to washing with soap or soap and soda
• GB/T 3922 Textiles.Tests for colour fastness.Colour fastness to perspiration
• GB/T 4802.1-2008 Textiles.Determination of fabric propensity tosurface fuzzing and topilling.Part 1: Circular locus method
• GB/T 4802.3 Textiles.Determination of fabric propensity to surface fuzzing and to pilling.Part3:Pilling box method
• GB/T 4856 Package of cotton goods and knitwear
• GB/T 5296.4 Instructions for use of products of consumer interest - Part 4: Textiles and apparel
• GB/T 5711 Textiles.Tests for colour fastness.Colour fastness to drycleaning using perchloroethylene solvent
• GB/T 6529 Textiles.Standard atmospheres for conditioning and testing
• GB/T 7573 Determination of pH value of aqueous extracts of textiles*， 2025-02-28 Update
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
• GB/T 8427-2019 Textiles － Tests for color fastness － Color fastness to artificial light: Xenon arc
• GB/T 8629 Textiles—Domestic washing and drying procedures for textile testing
• GB/T 8878 Knitted underwear

GB/T 22849-2024 history

• 2024 GB/T 22849-2024 Knitted T-shirt
• 2014 GB/T 22849-2014 Knitted T-shirt
• 2009 GB/T 22849-2009 Knitted T-shirt

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