GB 14907-2026 Fire resistive coating for steel structure 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 14907-2026
Fire resistive coating for steel structure
钢结构防火涂料
Issue date: 2026-03-31 Implementation date: 2026-10-01
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
1 Scope
2 Normative references
3 Terms and definitions
4 Classification, codes and marking
4.1 Classification and codes
4.2 Marking
5 Technical requirements
5.1 Physical and chemical properties
5.2 Fire resistance
6 Test methods
6.1 Sampling
6.2 Sample preparation conditions
6.3 Preparation of test specimens
6.4 Instruments and equipment
6.5 Physical and chemical properties
6.6 Fire resistance
7 Inspection rules
7.1 Classification of inspection
7.2 Batching and sampling
7.3 Judgment criteria
7.4 Application of inspection results
8 Marking, packaging, transportation and storage
Annex A (normative) Test method for intumescent performance of fire resistive coatings for steel structures
A.1 Sample preparation
A.2 Test apparatus
A.3 Test procedure
A.4 Test results
A.5 Test report
Annex B (normative) Test method for thermal insulation efficiency of fire resistive coatings for steel structures
B.1 Test specimens
B.2 Test apparatus
B.3 Test procedure
B.4 Test results
B.5 Test report
Annex C (normative) Calculation of loading amount for fire resistance testing of fire resistive coatings for steel structures
C.1 Conditions
C.2 Calculation of uniformly distributed load
C.3 Stability verification
C.4 Calculation of loading amount
C.5 Calculation example
Annex D (normative) Test method for equivalent thermal resistance or equivalent thermal conductivity of fire resistive coatings for steel structures
D.1 Test specimens
D.2 Test apparatus
D.3 Test procedure
D.4 Test results
D.5 Test report
Bibliography
Fire resistive coatings for steel structures
1 Scope
This document specifies the classification, codes and marking, technical requirements, inspection rules, marking, packaging, transportation and storage for fire resistive coatings for steel structures, and describes the corresponding test methods.
This document is applicable to various types of fire resistive coatings used on the surfaces of steel structures in buildings (structures).
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 191, Packaging — Pictorial marking for handling of goods
GB/T 706, Hot rolled section steel
GB/T 1725, Paints, varnishes and plastics — Determination of non-volatile-matter content
GB/T 1728, Determination of drying time of paint films and putty films
GB/T 3186, Paints, varnishes and raw materials for paints and varnishes — Sampling
GB/T 6003.1-2022, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
GB/T 6388, Transport package shipping mark
GB/T 9779, Multi-layer architectural coatings
GB/T 9978.1, Fire-resistance tests — Elements of building construction — Part 1: General requirements
GB/T 9978.6, Fire-resistance tests — Elements of building construction — Part 6: Specific requirements for beams
GB/T 14522-2008, Artificial weathering test method for plastics, coatings and rubber materials used for machinery industrial products — Fluorescent UV lamps
GB 28375, Fireproof coatings for concrete structures
GB 30981.2, Limit of harmful substances of coatings — Part 2: Industrial coatings
GB 50017, Standard for design of steel structures
GB 51249, Code for fire safety of steel structures in buildings
XF/T 714, Rapid temperature rise fire resistance test method for fire protective materials for structural members
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
fire resistive coating for steel structure
A coating applied to the surface of a steel structure in a building (structure) that can form a fire-resistant and heat-insulating protective layer to improve the fire resistance limit of the steel structure.
3.2
section factor
The ratio of the external surface area of the fire-exposed surface per unit length of a steel member to its volume per unit length.
3.3
reactive diluent
A type of compound that can both dissolve or disperse the film-forming substance and participate in the film-forming reaction during the coating film formation process, forming a non-volatile component that remains in the coating film.
Note: A reactive diluent is also called a reactive solvent.
[Source: GB/T 34682-2017, 3.2, modified]
3.4
equivalent thermal resistance
Under fire conditions, the ratio of the temperature difference across the protective layer of the fire resistive coating for steel structures per unit area to the heat passing through per unit time.
3.5
equivalent thermal conductivity
Under fire conditions, the ratio of the heat passing through the protective layer of non-intumescent fire resistive coating for steel structures per unit area per unit time to the temperature gradient across the protective layer.
4 Classification, codes and marking
4.1 Classification and codes
4.1.1 By fire protection object:
— Ordinary fire resistive coating for steel structures, used for the surface of steel structures in ordinary industrial and civil buildings (structures), code Fp;
— Special fire resistive coating for steel structures, used for the surface of steel structures in special buildings (structures) (such as petrochemical facilities and transformer and distribution stations, where the fire site temperature in the early stage of a fire is higher than the temperature of a building cellulose-type fire), code Ft.
4.1.2 By place of use:
— Indoor fire resistive coating for steel structures, used for the surface of steel structures indoors in buildings or in concealed works, code N;
— Outdoor fire resistive coating for steel structures, used for the surface of steel structures outdoors in buildings or in open-air works, code W.
4.1.3 By solvent and dispersion medium:
— Water-based fire resistive coating for steel structures, with water as the solvent and/or dispersion medium, code S;
— Solvent-based fire resistive coating for steel structures, with organic solvent as the solvent and/or dispersion medium, code R;
— Solvent-free fire resistive coating for steel structures, with no solvent or with reactive diluent as the solvent and/or dispersion medium, code W.
4.1.4 By fire protection mechanism:
— Intumescent fire resistive coating for steel structures, where the coating intumesces and foams at high temperature to form a fire-resistant and heat-insulating protective layer, code P;
— Non-intumescent fire resistive coating for steel structures, where the coating does not intumesce or foam at high temperature and itself becomes the fire-resistant and heat-insulating protective layer, code F.
4.2 Marking
The product code of fire resistive coatings for steel structures is denoted by the letters GT. The marking method for product models is as follows:
Example 1:
GT-NRP-Fp-SCB, indicating an indoor solvent-based intumescent fire resistive coating for steel structures, used for the protection of ordinary steel structures, with manufacturer-defined information of SCB.
Example 2:
GT-NSF-Fp-LG, indicating an indoor water-based non-intumescent fire resistive coating for steel structures, used for the protection of ordinary steel structures, with manufacturer-defined information of LG.
Example 3:
GT-WWP-Ft-HY, indicating an outdoor solvent-free intumescent fire resistive coating for steel structures, used for the protection of special steel structures, with manufacturer-defined information of HY.
5 Technical requirements
5.1 Physical and chemical properties
5.1.1 The physical and chemical properties of indoor fire resistive coatings for steel structures shall comply with the provisions of Table 1.
5.1.2 The physical and chemical properties of outdoor fire resistive coatings for steel structures shall comply with the provisions of Table 2.
5.2 Fire resistance
The fire resistance of fire resistive coatings for steel structures shall comply with the provisions of Table 3.
6 Test methods
Standard
GB 14907-2026 Fire resistive coating for steel structure (English)
GB 14907-2026 Fire resistive coating for steel structure 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 14907-2026
Fire resistive coating for steel structure
钢结构防火涂料
Issue date: 2026-03-31 Implementation date: 2026-10-01
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
1 Scope
2 Normative references
3 Terms and definitions
4 Classification, codes and marking
4.1 Classification and codes
4.2 Marking
5 Technical requirements
5.1 Physical and chemical properties
5.2 Fire resistance
6 Test methods
6.1 Sampling
6.2 Sample preparation conditions
6.3 Preparation of test specimens
6.4 Instruments and equipment
6.5 Physical and chemical properties
6.6 Fire resistance
7 Inspection rules
7.1 Classification of inspection
7.2 Batching and sampling
7.3 Judgment criteria
7.4 Application of inspection results
8 Marking, packaging, transportation and storage
Annex A (normative) Test method for intumescent performance of fire resistive coatings for steel structures
A.1 Sample preparation
A.2 Test apparatus
A.3 Test procedure
A.4 Test results
A.5 Test report
Annex B (normative) Test method for thermal insulation efficiency of fire resistive coatings for steel structures
B.1 Test specimens
B.2 Test apparatus
B.3 Test procedure
B.4 Test results
B.5 Test report
Annex C (normative) Calculation of loading amount for fire resistance testing of fire resistive coatings for steel structures
C.1 Conditions
C.2 Calculation of uniformly distributed load
C.3 Stability verification
C.4 Calculation of loading amount
C.5 Calculation example
Annex D (normative) Test method for equivalent thermal resistance or equivalent thermal conductivity of fire resistive coatings for steel structures
D.1 Test specimens
D.2 Test apparatus
D.3 Test procedure
D.4 Test results
D.5 Test report
Bibliography
Fire resistive coatings for steel structures
1 Scope
This document specifies the classification, codes and marking, technical requirements, inspection rules, marking, packaging, transportation and storage for fire resistive coatings for steel structures, and describes the corresponding test methods.
This document is applicable to various types of fire resistive coatings used on the surfaces of steel structures in buildings (structures).
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 191, Packaging — Pictorial marking for handling of goods
GB/T 706, Hot rolled section steel
GB/T 1725, Paints, varnishes and plastics — Determination of non-volatile-matter content
GB/T 1728, Determination of drying time of paint films and putty films
GB/T 3186, Paints, varnishes and raw materials for paints and varnishes — Sampling
GB/T 6003.1-2022, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
GB/T 6388, Transport package shipping mark
GB/T 9779, Multi-layer architectural coatings
GB/T 9978.1, Fire-resistance tests — Elements of building construction — Part 1: General requirements
GB/T 9978.6, Fire-resistance tests — Elements of building construction — Part 6: Specific requirements for beams
GB/T 14522-2008, Artificial weathering test method for plastics, coatings and rubber materials used for machinery industrial products — Fluorescent UV lamps
GB 28375, Fireproof coatings for concrete structures
GB 30981.2, Limit of harmful substances of coatings — Part 2: Industrial coatings
GB 50017, Standard for design of steel structures
GB 51249, Code for fire safety of steel structures in buildings
XF/T 714, Rapid temperature rise fire resistance test method for fire protective materials for structural members
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
fire resistive coating for steel structure
A coating applied to the surface of a steel structure in a building (structure) that can form a fire-resistant and heat-insulating protective layer to improve the fire resistance limit of the steel structure.
3.2
section factor
The ratio of the external surface area of the fire-exposed surface per unit length of a steel member to its volume per unit length.
3.3
reactive diluent
A type of compound that can both dissolve or disperse the film-forming substance and participate in the film-forming reaction during the coating film formation process, forming a non-volatile component that remains in the coating film.
Note: A reactive diluent is also called a reactive solvent.
[Source: GB/T 34682-2017, 3.2, modified]
3.4
equivalent thermal resistance
Under fire conditions, the ratio of the temperature difference across the protective layer of the fire resistive coating for steel structures per unit area to the heat passing through per unit time.
3.5
equivalent thermal conductivity
Under fire conditions, the ratio of the heat passing through the protective layer of non-intumescent fire resistive coating for steel structures per unit area per unit time to the temperature gradient across the protective layer.
4 Classification, codes and marking
4.1 Classification and codes
4.1.1 By fire protection object:
— Ordinary fire resistive coating for steel structures, used for the surface of steel structures in ordinary industrial and civil buildings (structures), code Fp;
— Special fire resistive coating for steel structures, used for the surface of steel structures in special buildings (structures) (such as petrochemical facilities and transformer and distribution stations, where the fire site temperature in the early stage of a fire is higher than the temperature of a building cellulose-type fire), code Ft.
4.1.2 By place of use:
— Indoor fire resistive coating for steel structures, used for the surface of steel structures indoors in buildings or in concealed works, code N;
— Outdoor fire resistive coating for steel structures, used for the surface of steel structures outdoors in buildings or in open-air works, code W.
4.1.3 By solvent and dispersion medium:
— Water-based fire resistive coating for steel structures, with water as the solvent and/or dispersion medium, code S;
— Solvent-based fire resistive coating for steel structures, with organic solvent as the solvent and/or dispersion medium, code R;
— Solvent-free fire resistive coating for steel structures, with no solvent or with reactive diluent as the solvent and/or dispersion medium, code W.
4.1.4 By fire protection mechanism:
— Intumescent fire resistive coating for steel structures, where the coating intumesces and foams at high temperature to form a fire-resistant and heat-insulating protective layer, code P;
— Non-intumescent fire resistive coating for steel structures, where the coating does not intumesce or foam at high temperature and itself becomes the fire-resistant and heat-insulating protective layer, code F.
4.2 Marking
The product code of fire resistive coatings for steel structures is denoted by the letters GT. The marking method for product models is as follows:
Example 1:
GT-NRP-Fp-SCB, indicating an indoor solvent-based intumescent fire resistive coating for steel structures, used for the protection of ordinary steel structures, with manufacturer-defined information of SCB.
Example 2:
GT-NSF-Fp-LG, indicating an indoor water-based non-intumescent fire resistive coating for steel structures, used for the protection of ordinary steel structures, with manufacturer-defined information of LG.
Example 3:
GT-WWP-Ft-HY, indicating an outdoor solvent-free intumescent fire resistive coating for steel structures, used for the protection of special steel structures, with manufacturer-defined information of HY.
5 Technical requirements
5.1 Physical and chemical properties
5.1.1 The physical and chemical properties of indoor fire resistive coatings for steel structures shall comply with the provisions of Table 1.
5.1.2 The physical and chemical properties of outdoor fire resistive coatings for steel structures shall comply with the provisions of Table 2.
5.2 Fire resistance
The fire resistance of fire resistive coatings for steel structures shall comply with the provisions of Table 3.
6 Test methods
