GB 12955-2024 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 12955-2024 | English | 515 |
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Fire-resistant doorsets
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| GB 12955-2008 | English | 85 |
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Fire resistant door sets
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| GB 12955-1991 | English | 399 |
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General technical conditions for steel fire door
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GB 12955-2024: Fire-resistant doorsets---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB12955-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.220.50
CCS C 82
Replacing GB 12955-2008
Fire-resistant doorsets
防火门
Issued on: OCTOBER 28, 2024
Implemented on: MAY 01, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 7
4 Classification and code, specifications, and model... 9
4.1 Classification and code... 9
4.2 Specifications... 11
4.3 Model... 11
5 General requirements... 13
6 Technical requirements... 13
6.1 Appearance... 13
6.2 Dimensional deviation... 13
6.3 Key material properties... 14
6.4 Accessory performance... 14
6.5 Mechanical properties... 16
6.6 Linkage signal receiving and feedback function... 17
6.7 Smoke tightness performance... 18
6.8 Fire resistance... 18
6.9 Water spray impact resistance... 18
7 Test methods... 18
7.1 General provisions... 18
7.2 Instruments and equipment... 18
7.3 Appearance... 19
7.4 Dimensional deviation... 19
7.5 Key material properties... 20
7.6 Accessory performance... 20
7.7 Mechanical properties... 22
7.8 Linkage signal receiving and feedback function... 23
7.9 Smoke-tightness performance... 23
Fire-resistant doorsets
1 Scope
This document specifies the classification, code, specifications, models, general
requirements, technical requirements, test methods, inspection rules, marking,
packaging, transportation and storage of fire-resistant doorsets.
This document applies to the design, manufacture and quality inspection of side hung
and side hung folding fire-resistant doorsets used in industrial and civil buildings.
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 of the referenced
document (including any amendments) applies.
GB/T 191, Packaging - Pictorial marking for handling of goods
GB/T 708, Dimension, shape, weight and tolerance for cold-rolled steel plates and
sheets
GB/T 709, Dimension shape weight and tolerances for hot-rolled steel plates and
sheets
GB/T 5486, Test methods for inorganic rigid thermal insulation
GB/T 5823, Terminology for building windows and doors
GB/T 5824, Size system of opening for windows and doors in building
GB/T 5907.1, Fire protection vocabulary - Part 1.General terms
GB/T 5907.5, Fire protection vocabulary - Part 5.Fire products
GB/T 6388, Transport package shipping mark
GB/T 7633, Fire resistance tests - Door and shutter assemblies
GB 8624-2012, Classification for burning behavior of building materials and
products
GB/T 9969, General principles for preparation of instructions for use of industrial
products
GB/T 9978.1, Fire-resistance tests - Elements of building construction - Part 1.
General requirements
GB/T 13306, Plate
GB/T 14155, Doorsets - Soft heavy body impact test
GB 15763.1, Safety glazing materials in building - Part 1.Fire-resistant glass
GB 16807, Fire intumescent seals
GB/T 20285, Toxic classification of fire effluents hazard for materials
GB/T 25970, Non-combustible inorganic compound board
GB/T 26784, Fire resistance test for elements of building construction - Alternative
and additional procedures
GB/T 29049, Doorsets - Vertical load test
GB/T 29530, Hinged or pivoted doors - Determination of the resistance to static
torsion
GB/T 29739, Test method of resistance to repeat opening and closing for windows
and doors
GB 30051, General technical requirements for push-bar emergency exit locks
GB/T 37639, Determination of polybrominated biphenyls and polybrominated
diphenyl ethers in plastic products - Gas chromatography and mass spectrometry
GB/T 41077, Thermal insulating products for building applications - Limit value
of hexabromocyclododecanes
GB/T 41480, Smoke leakage tests for door and shutter assemblies
GBZ 1, Hygienic standards for the design of industrial enterprises
GBZ/T 198, Guideline for protection of occupational hazards in the use of synthetic
vitreous fibre insulation wools
XF 93, Fire-proof door closer
3 Terms and definitions
For the purpose of this document, terms and definitions given in GB/T 5823, GB/T
5907.1 and GB/T 5907.5, as well as the following apply.
3.1
fire-resistant doorsets
Door assemblies consisting of door frame, door leaf and hardware accessories, and with
certain fire resistance.
Note. Door assemblies may also include auxiliary materials such as bright windows
on the door frame, viewing windows in the door leaf, and various fire-
resistant seals.
[Source. GB/T 5907.5-2015, 2.14.1.1, modified]
3.2
side hung fire-resistant doorsets
Fire-resistant doorsets (3.1) with a pivot located on the side of the door and the door
leaf pivoting outwards from the door frame to open.
[Source. GB/T 5907.5-2015, 2.14.1.2, modified]
3.3
side hung folding fire-resistant doorsets
Fire-resistant doorsets (3.1) with multiple door leaves connected by hinges, which is
opened by folding and rotating outwards from the plane of the door frame.
3.4
surface panel of door leaf
The panels covering the outermost front and back sides of the door leaf, which serve as
protection and shaping.
3.5
filling material for door leaf
The formed or shaped material filling the surface panel of door leaf (3.4) in the structure
of fire-resistant doorsets.
3.6
normally open fire-resistant doorsets
Fire-resistant doorsets (3.1) that are normally kept open and can be closed automatically
in case of fire.
4 Classification and code, specifications, and model
4.1 Classification and code
4.1.1 Classification and code by application sites are shown in Table 1.
4.1.2 Classification and code by the number of door leaves are shown in Table 2.
4.1.3 Classification and codes by fire resistance are shown in Table 3.
4.2 Specifications
The specifications of fire-resistant doorsets are expressed in the thousands and hundreds
digits (the tens digit is rounded off) of the opening size mark width and mark height (in
millimeters), arranged in sequence as four digits. If the size is less than 1 000 mm, add
0 in front. The basic specifications of the opening size shall comply with the relevant
provisions of GB/T 5824.
The relationship between the width and height dimensions of the opening marked on
the specifications of fire-resistant doorsets and the width and height dimensions of the
fire-resistant doorsets' exterior structure shall be as per the relevant provisions of GB/T
5824.
Example 1.The marking width of the fire-resistant doorsets’ opening is 900 mm and
the marking height is 2 100 mm, and its specification is expressed as 0921.
Example 2.The marking width of the fire-resistant doorsets’ opening is 2 110 mm and
the marking height is 2 370 mm, and its specification is expressed as 2124.
4.3 Model
The method for compiling fire-resistant doorsets’ models is shown in Figure 1.
5 General requirements
5.1 The materials and manufacturing processes used in fire-resistant doorsets shall not
cause harm to humans, the environment, animals or plants. Fire-resistant doorset
products shall comply with the relevant requirements of GBZ 1 and GBZ/T 198 during
the manufacturing process.
5.2 In addition to the technical requirements specified in this document, other relevant
performance requirements for fire-resistant doorsets and their materials, accessories,
etc., as well as regular inspection, maintenance and replacement, shall be implemented
in accordance with national standards and industry standards if there are any. If there
are no national standards and industry standards, the manufacturer shall formulate
enterprise standards for regulation, or determine them through consultation between the
supply and demand parties.
6 Technical requirements
6.1 Appearance
6.1.1 The surface of fire-resistant doorsets and their accessories shall be smooth and
flat, without cracks, gouging marks, burrs or welding slag; the decorative surfaces of
fire-resistant doorsets such as paint (spraying), film, and veneer shall be firm and
without obvious bubbling, cracks or wrinkles.
6.1.2 Fire-resistant doorsets shall have a permanent product marking plate fixed in a
prominent position on the door frame or door leaf, which shall not be pasted. Normally
closed fire-resistant doorsets in evacuation passages and small door leaves installed on
the door leaf of fire-resistant doorsets for temporary passage of personnel shall have a
permanent warning sign with the words "Keep the fire-resistant doorset closed" fixed
in a prominent position in the middle of the door leave surface. Product marking plates
and warning signs shall comply with the requirements of 9.1.
6.2 Dimensional deviation
6.2.1 Material thickness dimensional deviation
6.2.1.1 The deviation between the actual thickness of the steel plates used for fire-
resistant doorsets’ door panels and door frames and the nominal thickness indicated in
the technical documents shall comply with the requirements of GB/T 708 and GB/T
709.
6.2.1.2 The deviation between the actual thickness of the glass used in fire-resistant
doorsets and the nominal thickness indicated in the technical documents shall comply
with the provisions of GB 15763.1.
6.2.1.3 The deviation between the actual thickness of the non-combustible inorganic
compound board used in fire-resistant doorsets and the nominal thickness indicated in
the technical documents shall comply with the provisions of GB/T 25970.
6.2.2 Dimensional deviation
The deviation between the actual dimensions of the fire-resistant doorset and the
dimensions indicated in the technical documents shall comply with the provisions of
Table 5.
6.3 Key material properties
6.3.1 Main materials of door frame
The combustion performance of the wood material or the material formed by combining
wood material and non-combustible inorganic compound board as the main body of the
fire-resistant doorsets’ frame shall not be lower than Class B specified in Table 2 of GB
8624-2012.
6.3.2 Filling material for door leaf
The performance of the filling material for door leaf shall comply with the provisions
of Appendix A.
6.4 Accessory performance
6.4.1 Seals
6.4.1.1 The seals shall be embedded in the groove smoothly and continuously or pasted
in the designated position according to the design requirements. The embedding or
pasting shall be tight and firm, without loose protrusions, and there shall be no
shrinkage gaps at the joints.
6.4.1.2 The performance of fire intumescent seals shall comply with the requirements
of GB 16807.
6.4.2 Glass
6.4.2.1 Glass shall be fire-resistant glass, and its performance shall comply with the
requirements of GB 15763.1.
6.4.2.2 The fire resistance performance of the insulated fire-resistant glass used in the
installation of insulated fire-resistant doorsets, partially insulated fire-resistant doorsets
and non-insulated fire-resistant doorsets shall not be lower than that of the
corresponding fire-resistant doorsets.
6.4.2.3 The fire resistance integrity of non-insulated fire-resistant glass used in the
installation of insulated fire-resistant doorsets and partially insulated fire-resistant
doorsets shall not be lower than that of the fire-resistant doorsets, and the total light
transmission area shall not be greater than 0.1 m2.
6.4.2.4 The fire resistance of non-insulated fire-resistant glass used in the installation
of non-insulated fire-resistant doorsets shall not be lower than that of fire-resistant
doorsets.
6.4.3 Locks
6.4.3.1 Locks shall have a handle or a push-bar. Round or spherical knob shall not be
used to replace the handle (except for fire-resistant doorsets for pipe shaft inspection).
6.4.3.2 The fire resistance performance of locks shall not be lower than the fire
resistance integrity requirements of fire-resistant doorsets; the performance of push-bar
emergency exit locks installed on fire-resistant doorsets shall comply with the
provisions of GB 30051, and the fire resistance performance of other locks shall comply
with the provisions of Appendix B.
6.4.4 Hinges
The quantity, specifications, strength, etc. of hinges shall be compatible with the model
specifications and door leaf quality of the relevant fire-resistant doorset, and the
resistance to repeat opening and closing shall not be lower than that specified in 6.5.1;
the fire resistance performance shall comply with the requirements of Appendix B and
shall not be lower than the fire resistance integrity requirements for fire-resistant
doorsets.
6.4.5 Door closing device
6.4.5.1 Where the door closing device is a fire-resistant doorset closer, it shall comply
with the provisions of XF 93.Where the door closing device is of other types, its
quantity, specifications and strength shall be compatible with the model specifications
and door leaf quality of the relevant fire-resistant doorset, and its resistance to repeat
opening and closing shall not be lower than that specified in 6.5.1.
6.4.5.2 The performance of the door closing device installed on the normally open fire-
resistant doorsets for evacuation passage shall also meet the following requirements.
a) The fire-resistant doorset can be stopped at the specified position or area;
b) After the door leaf is opened 90° ± 5° and maintained for 2 400 hours, it can
be released from the stopped state and completely closed within (3~20)
seconds.
6.4.6 Sequencer
The material of the sequencer shall be steel (except for the part in direct contact with
the door leaf). Its specifications and strength shall be compatible with the model
specifications and door leaf quality of the relevant fire-resistant doorset. The resistance
to repeat opening and closing shall not be lower than the requirements of 6.5.1.
6.4.7 Latch
6.4.7.1 The main load-bearing parts of the latch shall be made of steel.
6.4.7.2 The latch installed on the fire-resistant doorsets for evacuation passage shall be
able to open automatically when the door leaf is opened.
6.5 Mechanical properties
6.5.1 Resistance to repeat opening and closing
When testing the resistance to repeat opening and closing as specified in Table 6, the
fire-resistant glass and other components shall not fall off, the connection between the
fire-resistant door frame and the door leaf shall be normal, and the door leaf shall be
able to open and close normally.
The small door leaf provided on the fire-resistant doorset’s door leaf for temporary
passage of personnel shall be subjected to the test of resistance to repeat opening and
closing according to the number of times specified in Table 6 for the normally closed
fire-resistant doorsets for evacuation passage (Tb).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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