GB 46311-2025 Protective clothing—Protective clothing against rain for occupational use English, Anglais, Englisch, Inglés, えいご
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ICS 13.340.10
CCS C73
People's Republic of China National Standard
GB 46311-2025
Protective clothing — Protective clothing against rain for occupational use
Issued on August 29, 2025
Implemented on September 1, 2026
Issued by
State Administration for Market Regulation
Standardization Administration of China
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods and result evaluation
6 Marking
7 Manufacturer's information
Appendix A (Informative) Recommended continuous wearing time for occupational rain protective clothing
Appendix B (Normative) Test method for high-energy raindrop impact protection
Appendix C (Normative) Friction pretreatment requirements
Appendix D (Informative) Equipment structure for organic solvent pretreatment
Appendix E (Normative) Evaluation of water absorption performance for indicator fabric
References
Protective clothing — Protective clothing against rain for occupational use
1 Scope
This document specifies the technical requirements, marking, and manufacturer's information for protective clothing against rain for occupational use, and describes test methods.
This document is applicable to protective clothing used in outdoor precipitation and indoor splashing environments.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies; for undated references, the latest edition (including any amendments) applies.
GB/T 1690 Rubber, vulcanized or thermoplastic — Determination of resistance to liquids
GB/T 2912.1 Textiles — Determination of formaldehyde — Part 1: Free and hydrolyzed formaldehyde (water extraction method)
GB/T 3917.2 Textiles — Tearing properties of fabrics — Part 2: Tearing force of trouser-shaped specimens (single rip method)
GB/T 3923.1 Textiles — Tensile properties of fabrics — Part 1: Determination of breaking force and elongation at break (Strip method)
GB/T 4744 Textiles — Evaluation for water resistance — Hydrostatic pressure test
GB/T 5296.4-2012 Instructions for use of consumer products — Part 4: Textiles and garments
GB/T 6529 Textiles — Standard atmospheres for conditioning and testing
GB/T 7742.1 Textiles — Bursting properties of fabrics — Part 1: Hydraulic method for determination of bursting strength and bursting expansion
GB/T 8628 Textiles — Preparation, marking, and measurement of fabric and garment specimens for dimensional change testing
GB/T 8629-2017 Textiles — Domestic laundry and drying procedures for testing
GB/T 8630 Textiles — Determination of dimensional changes after washing and drying
GB/T 11048 Textiles — Physiological comfort — Determination of thermal resistance and water vapor resistance under steady-state conditions (Sweating guarded-hotplate method)
GB/T 12586-2003 Rubber or plastic coated fabrics — Determination of resistance to flexing damage
GB 18401 National general safety technical code for textile products
GB 20097 General technical specifications for protective clothing
GB 20653-2020 Protective clothing — High-visibility warning clothing for professional use
GB/T 21196.1-2007 Textiles — Determination of abrasion resistance of fabrics using the Martindale method — Part 1: Martindale abrasion testing machine
GB/T 21196.2-2025 Textiles — Determination of abrasion resistance of fabrics using the Martindale method — Part 2: Determination of specimen rupture
GB 24541-2022 Hand protection — Mechanical risk protective gloves
HG/T 2580 Rubber or plastic coated fabrics — Determination of tensile strength and elongation at break
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Protective clothing against rain for occupational use
Protective clothing made of waterproof materials, worn during outdoor precipitation and indoor splashing operations.
Note: Precipitation environments include rain, snow, fog, and other conditions.
3.2 Water vapor resistance (Ret)
The difference in water vapor pressure between two surfaces of a protective clothing material divided by the synthetic heat flux per unit area in the gradient direction.
Note 1: A physical quantity used to characterize the properties of textile or composite materials, determining the resistance to water vapor evaporation from the human body to the external environment through the material. The heat flux may consist of diffusion and convection components.
Note 2: Unit: m²·Pa/W.
[Source: ISO 11610:2023, 4.6.10, modified]
3.3 Resistance to water penetration (WP)
The static resistance of protective clothing materials to water penetration.
Note: Unit: Pa.
3.4 Other waterproof layers
Waterproof layers between the outer fabric and lining of protective clothing.
Note 1: Different occupational rain protective clothing designs may or may not include other waterproof layers.
Note 2: Other waterproof layers generally include waterproof interlayers and waterproof thermal interlayers.
3.5 Lining
The innermost layer of protective clothing without waterproof functionality.
3.6 Absorbency
The characteristic of material pores and voids to absorb and retain liquids (typically water).
4 Requirements
4.1 Safety
The safety of protective clothing shall comply with the requirements of GB 20097.
4.2 Design requirements
The structural design of protective clothing shall comply with the requirements of GB 20097. The protective range shall cover the head, and exposed pockets shall have flaps or waterproof designs. Exposed zippers shall have waterproof designs.
4.3 Fabric appearance quality
The fabrics used in protective clothing shall be flat, clean, free from damage, spots, delamination, stickiness, lack of glue, or other defects affecting protective performance.
4.4 Resistance to water penetration
The resistance to water penetration performance levels of protective clothing shall meet the requirements of Table 1.
Table 1 Resistance to water penetration performance levels
4.5 Water vapor resistance
The water vapor resistance performance levels of protective clothing shall meet the requirements of Table 2.
Table 2 Water vapor resistance levels
4.6 High-energy raindrop overall protection performance
When manufacturers claim high-energy raindrop overall protection performance, the test shall be conducted according to the method specified in Appendix B. The total wetted area of the indicator clothing shall be ≤50 cm², with the total wetted area of the chest and abdomen ≤20 cm².
4.7 Visibility
If reflective materials are used, they shall comply with the requirements of 6.1 in GB 20653-2020; if composite performance materials are used, they shall comply with the requirements of 6.1 in GB 20653-2020; if fluorescent materials are used, they shall comply with the requirements of Table 2 in GB 20653-2020.
4.8 Tensile strength of woven fabrics
When tested according to the method specified in 5.4, the tensile strength of woven fabrics shall be ≥450 N. This requirement does not apply if the fabric's elongation at break is >50%.
4.9 Tearing strength of woven fabrics
The tearing strength of woven fabrics in both warp and weft directions shall be ≥20 N. This requirement does not apply if the fabric's elongation at break is >50%.
4.10 Bursting strength of knitted fabrics
Knitted fabrics, non-woven or composite fabrics with elongation at break >50% shall withstand a minimum bursting pressure of ≥100 kPa on an area of 50 cm².
4.11 Seam technical requirements
4.11.1 The stitching lines of protective clothing at all parts shall be straight, neat, flat, and firm. For products using adhesive strips, the strip width shall be ≥2 cm, firmly bonded, with a glue width of 0.1-0.4 cm and overlapping width ≥1 cm. For products using seam bonding, the overlapping width shall be ≥1 cm, with a glue width of 0.1-0.4 cm.
4.11.2 The tensile strength of straight seams in fabrics shall be ≥200 N. This requirement does not apply if the fabric's elongation at break exceeds 50%.
4.12 Size specifications
The size of protective clothing shall be set according to GB 20097. For sizes beyond the range, adjustments shall be made according to the grade difference.
