GB 38306-2025 Hand protection—Protective gloves against thermal risks English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 13.340.40
CCS C 73
People's Republic of China National Standard
GB 38306-2025
Replacing GB/T 38306-2019
Hand protection — Protective gloves against thermal risks
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 Technical requirements
5 Test methods
6 Marking
7 Information to be provided by the manufacturer
Appendix A (Normative) Test method for flame resistance
Appendix B (Normative) Test method for contact heat protection performance
Appendix C (Normative) Test method for flame resistance of surface materials
Appendix D (Normative) Test method for convective heat protection performance
Appendix E (Normative) Test method for radiant heat protection performance
Appendix F (Normative) Test method for protection against small splashes of molten metal
Appendix G (Normative) Test method for protection against large splashes of molten metal
References
Hand protection — Protective gloves against thermal risks
1 Scope
This document specifies the technical requirements, marking and information to be provided by the manufacturer for protective gloves against thermal risks (hereinafter referred to as "gloves"), and describes test methods.
This document applies to gloves that protect against one or more forms of thermal hazards including flames, contact heat, convective heat, radiant heat, small splashes of molten metal or large splashes of molten metal.
This document does not apply to gloves for firefighting and welding operations.
Note: The tests in this document provide performance levels rather than protection levels.
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 5456-2009 Textiles — Burning behavior — Determination of flame spread properties of vertically oriented specimens
GB 8965.3-2022 Protective clothing — Protective clothing against molten metal splash
GB/T 12624-2020 Hand protection — General test methods
GB/T 17599 Protective clothing — Protection against heat and flame — Test method for limited flame spread
GB 24541-2022 Hand protection — Protective gloves against mechanical risks
GB 38453-2019 Protective clothing — Heat protective clothing
GB 42298-2022 Hand protection — General technical specifications
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Afterflame time
Duration of flaming combustion of a material after removal of the ignition source under specified test conditions.
Note: Unit is second (s).
3.2 Afterglow time
Duration of glowing combustion of a material after cessation of flaming or removal of the ignition source under specified test conditions.
Note 1: Unit is second (s).
Note 2: In this document, afterglow refers to glowing combustion occurring at the edge of the damaged area accompanied by spread of the damaged area. The duration of red-hot phenomena within the damaged area caused by continuous release of previously absorbed heat is not included in the afterglow time.
3.3 Melting
Softening and flowing of material under high temperature.
3.4 Dripping
Separation of molten droplets during material melting.
3.5 Hole
Opening, break or perforation formed in the original structure of the specimen.
3.6 Contact temperature (Tc)
Constant surface temperature of the heating cylinder contact area in contact heat tests.
3.7 Threshold time (tt)
Time required for the calorimeter temperature to increase by 10°C in contact heat tests.
3.8 Convective heat transfer index (CHTI)
Time required for the calorimeter temperature to rise by (24.0±0.2)°C under specified test conditions using a copper disc with mass of (18.00±0.05)g and initial temperature of (25.0±5.0)°C.
Note: Unit is second (s).
3.9 Radiant heat transfer index (RHTI)
Time required for the calorimeter temperature to rise by (24.0±0.2)°C under specified test conditions with specified incident heat flux density.
Note: Unit is second (s).
3.10 Heat flux density
Heat passing through the exposed surface of the calorimeter per unit time.
Note: Unit is kilowatt per square meter (kW/m²).
4 Technical requirements
4.1 Harmlessness
Protective gloves against thermal risks shall comply with applicable technical requirements in GB 42298-2022 clause 5.2.
4.2 Abrasion resistance
When tested according to method specified in 5.2, gloves shall achieve at least performance level 1 specified in Table 1.
Table 1 Abrasion resistance levels
4.3 Tear resistance
When tested according to method specified in 5.3, gloves shall achieve at least performance level 1 specified in Table 2.
Table 2 Tear resistance levels
4.4 Protection against thermal risks
4.4.1 General
Protective gloves against thermal risks shall meet one or more performance requirements in 4.4.2 to 4.4.7.
4.4.2 Flame resistance
For gloves with flame resistance, when tested according to method specified in 5.4.1, requirements in Table 3 shall be met.
If melting occurs, glove materials shall not drip, the innermost layer shall not melt, all layers of glove material in the test area shall not have holes, and seams shall not open.
Table 3 Flame resistance levels
4.4.3 Contact heat
For gloves with contact heat protection, when tested according to method specified in 5.4.2, requirements in Table 4 shall be met.
The innermost layer shall not melt or form holes.
Table 4 Contact heat performance levels
When contact heat protection performance test results reach level 3 or 4, flame resistance test of surface materials shall be conducted. When tested according to method specified in 5.4.3, afterflame time shall not exceed 3 s, afterglow time shall not exceed 25 s, flame shall not spread to the top or side edges of the specimen, and there shall be no melting dripping or holes; otherwise, contact heat performance level shall only be claimed as level 2.
4.4.4 Convective heat
For gloves with convective heat protection, when tested according to method specified in 5.4.4, requirements in Table 5 shall be met.
The innermost layer shall not melt or form holes.
Table 5 Convective heat performance levels
When convective heat protection performance test results reach level 3 or 4, flame resistance test of surface materials shall be conducted. When tested according to method specified in 5.4.3, afterflame time shall not exceed 3 s, afterglow time shall not exceed 25 s, flame shall not spread to the top or side edges of the specimen, and there shall be no melting dripping or holes; otherwise, convective heat performance level shall only be claimed as level 2.
4.4.5 Radiant heat
For gloves with radiant heat protection, when tested according to method specified in 5.4.5, requirements in Table 6 shall be met.
The innermost layer shall not melt or form holes.
Table 6 Radiant heat performance levels
When radiant heat protection performance test results reach level 3 or 4, flame resistance test of surface materials shall be conducted. When tested according to method specified in 5.4.3, afterflame time shall not exceed 3 s, afterglow time shall not exceed 25 s, flame shall not spread to the top or side edges of the specimen, and there shall be no melting dripping or holes; otherwise, radiant heat performance level shall only be claimed as level 2.
4.4.6 Small splashes of molten metal
For gloves with protection against small splashes of molten metal, when tested according to method specified in 5.4.6, the number of droplets causing temperature rise of 40 K shall meet requirements in Table 7.
The outermost and innermost layers shall not melt, and the innermost layer shall not form
