GB 12955-2008 (GB 12955-2024 Newer Version) PDF English
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General technical conditions for steel fire door
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GB 12955-2008: PDF in English GB 12955-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.220.50
C 82
Replacing GB 12955-1991, GB 14101-1993
Fire resistant doorsets
防火门
ISSUED ON: APRIL 22, 2008
IMPLEMENTED ON: JANUARY 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 4
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 Classification, code and tag ... 10
5 Requirements ... 13
5.1 General requirements ... 13
5.2 Material ... 13
5.3 Fittings ... 15
5.4 Processing technique and appearance quality ... 17
5.5 Door leaf quality ... 17
5.6 Size limit deviation ... 18
5.7 Form-position tolerance ... 18
5.8 Fit tolerance ... 18
5.9 Flexibility ... 19
5.10 Reliability ... 19
5.11 Fire resistance ... 19
6 Test methods ... 19
6.1 Requirement for specimen ... 19
6.2 Accuracy of instrument and equipment ... 20
6.3 Material ... 20
6.4 Fittings ... 21
6.5 Processing technique and appearance quality ... 23
6.6 Door leaf quality ... 23
6.7 Dimensional tolerance ... 23
6.8 Tolerance of form and position ... 26
6.9 Fit tolerance ... 30
6.10 Flexibility ... 32
6.11 Reliability ... 32
6.12 Fire resistance ... 33
7 Inspection rules ... 33
7.1 Factory-exit inspection ... 33
7.2 Type inspection ... 34
8 Marking, packaging, transportation and storage ... 36
Annex A (normative) Requirements and test methods for flameproof locks ... 38
Annex B (normative) Fire resistance requirements and test methods for fire
resistant gemels (hinges) ... 39
Annex C (normative) Fire resistance requirements and test methods for fire
resistant sequence controllers ... 40
Annex D (normative) Fire resistance requirements and test methods for fire
resistant bolts ... 41
Foreword
Subclause 7.2 of Clause 5 of this Standard is compulsory; other clauses
of this Standard are voluntary.
This Standard replaces GB 12955-1991 “General technical conditions for steel
fire door” and GB 14101-1993 “Wood fire door - General technical conditions”.
Compared with GB 12955-1991 and GB 14101-1993, the major changes are
as follows:
- ADD the content of the classification of fire resistant doorsets according to
material (see 4.1);
- MODIFY the classification of fire resistance of fire resistant doorsets, from
the original A, B, C to fully insulated doorsets (type A), partially insulated
doorsets (type B) and no insulated doorsets (type C) (4.3 in GB 12955-
1991, 4.1 in GB 14101-1993 and 4.4 of this Standard);
- Requirement for the material of fire resistant doorsets is more specific: apart
from non-metallic material, ADD the requirements for combustion
performance and burning flue-gas toxicant (5.1 in GB 12955-1991 and GB
14101-1993 and 5.2 in this Standard);
- DELETE the requirements of wind pressure deformability resistance, air
penetration resistance and rainfall penetration resistance for fire resistant
timber doorsets used as the building exterior door;
- Performance requirements for fireproof locks are more specific (5.1.3 in GB
12955-1991, 5.1.4 in GB 14101-1993 and 5.3.1 of this Standard);
- Performance requirements for fireproof hinges (gemels) are more specific
(5.1.3 and 5.1.4 in GB 12955-1991, 5.1.4 in GB 14101-1993 and 5.3.2 of
this Standard);
- Performance requirements for door-closing devices are more specific (5.1.3
in GB 12955-1991, 5.1.4 in GB 14101-1993 and 5.3.3 of this Standard);
- Performance requirements for fire resistant glass are more specific (5.1.3
in GB 12955-1991, 5.1.3 in GB 14101-1993 and 5.3.7 of this Standard);
- ADD the quality requirements and test methods for the door leaf of fire
resistant doorsets (see 5.5 and 6.6);
- ADD the requirements and test methods for the degree of curvature in the
width direction of the door leaf (see 5.7 and 6.8.3);
Fire resistant doorsets
1 Scope
This Standard specifies the classification, code and tag, requirements, test
methods, inspection rules, marking, packaging, transportation and storage of
fire resistant doorsets.
This Standard is applicable to fire resistant timber, steel and timber-steel side
hung doorsets and other material fire resistant. As for fire resistant doorsets of
other open modes, it may refer to this Standard.
2 Normative references
The following documents contain the provisions which, through reference in this
Standard, become the provisions of this Standard. For dated references, their
subsequent amendments (excluding corrigendum) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 708 Dimension shape weight and tolerance for cold-rolled steel plates
and sheets
GB/T 709 Dimensions, shape, weight and tolerances for hot-rolled plates
and sheets
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 4823-1995 Defects in sawn timber (eqv ISO 1029:1974)
GB/T 5823-1986 Doors and windows for building - Terminology
GB/T 5824 Size system of opening for windows and doors in building
GB/T 5907-1986 Fundamental terminology of fire protection; Part 1
GB/T 6388 Transport package shipping mark
GB/T 7633 Fire resistance tests - Door and shutter assemblies
3.3
fire resistant steel doorsets
Doorsets with certain fire resistance, of which the door frame, door leaf frame
and door leaf panel are made of steel material. If the door leaf is filled with
materials, it will be filled with fireproof and heat-insulating materials that are
non-toxic and harmless to the human body. It is equipped with fire-resistant
hardware components.
3.4
fire resistant timber doorsets with steel structure
Doorsets with certain fire resistance, of which the door frame, door leaf frame
and door leaf panel are made of steel and flame-retardant wood or flame-
retardant wood products. If the door leaf is filled with materials, it will be filled
with fireproof and heat-insulating materials that are non-toxic and harmless to
the human body. It is equipped with fire-resistant hardware components.
3.5
other material fire resistant doorsets
Doorsets with certain fire resistance, of which the door frame, door leaf frame
and door leaf panel are made of inorganic non-combustible materials other than
steel, flame-retardant wood or flame-retardant wood products or partially made
of steel, flame-retardant wood, and flame-retardant wood products. If the door
leaf is filled with materials, it will be filled with fireproof and heat-insulating
materials that are non-toxic and harmless to the human body. It is equipped
with fire-resistant hardware components.
3.6
fully insulated doorsets
Within a specified period of time, doorsets that meet the requirements for fire
integrity and fire insulation.
3.7
partially insulated doorsets
Doorsets that meet the requirements for fire integrity and fire insulation within
a specified period of time greater than or equal to 0.50 h, and meet the
requirements for fire integrity when 0.50 h is exceeded.
3.8
Example 2: MFM-1221-d6B1.00-2. Refers to the semi insulated (type B) fire resistant timber
doorsets, the mouth width thereof is 1200mm, mouth height is 2100 mm, door leaf is without
the pane, door frame is with the single groove mouth, be with the bright window, be without the
lower frame, door leaf shut in the counterclockwise direction, duration of fire integrality and fire
insulation of double-leaf fire resistant door shall be not less than 0.50 h.
4.5.3 Specification
Fire resistant doorsets specification is expressed by dimension of opening,
dimension of opening shall meet the relative requirements in GB/T 5824,
special dimension of opening shall be confirmed according to negotiation
between the producer and user.
5 Requirements
5.1 General requirements
Fire resistant doorsets shall meet requirements in this Standard, which shall be
manufactured according to the approved design and technological document.
5.2 Material
5.2.1 Filling material
5.2.1.1 If the fire resistant doorsets is filled with filling materials, harmless
fireproofing heat insulating material shall be adopted.
5.2.1.2 Innocuous fireproofing heat insulating material filled in the fire resistant
doorsets door leaf shall meet the requirements GB 8624-2006 A1 level and be
tested by testing institutions authorized by the government and the ZA2 level
fume virulence classification of risks of GB/T 20285-2006.
5.2.2 Timber
5.2.2.1 Timber used for producing fire resistant doorsets shall conform to
requirements in II (middle) level of 5.1.1.1 in JG/T 122-2000.
5.2.2.2 Timber used in the fire resistant doorsets shall be the flame retardant
timber or composite wood wrapped by the fire-plate, which shall be tested by
the government authorized testing institutions and meet the hard burning nature
requirement in Clause 7 of GB/T 8625-2005.
5.2.2.3 When the timber used in the fire resistant doorsets going through the
fire-retardant treatment and drying process, moisture percentage thereof shall
not be more than 12 %; moisture percentage of fire resistant doorsets shall not
be more than local equilibrium moisture content.
by government authorized testing institutions and meet the hard burning nature
requirements in Clause 7 of GB/T 8625-2005 or combustion performance A1
level requirement in GB 8624-2006, mechanical property thereof shall reach
related standard and meet related requirement for the fabrication of fire
resistant doorsets.
5.2.6 Agglomerant
5.2.6.1 Agglomerant used in the fire resistant doorsets shall be harmless.
5.2.6.2 Agglomerant used in fire resistant doorsets shall pass through the test
by government authorized testing institutions and meet the fume virulence risk
classification ZA2 requirement in GB/T 20285-2006.
5.3 Fittings
5.3.1 Fireproofing lock
5.3.1.1 Gate lock installed on the fire resistant doorsets shall be the fireproofing
lock.
5.3.1.2 If the door leaf is with the lock barrel, fireproofing lock shall be with the
hand spike, roundness or ball knob shall not be used (except for the special
position like the piping shaft).
5.3.1.3 Fireproofing lock shall pass through test by government authorized
testing institutions; fire resistance thereof shall conform to requirements in
Annex A.
5.3.2 Fireproofing hinged flap (hinge)
Plating thickness of hinged flap (hinge) of the fire resistant doorsets shall be no
less than 3 mm, fire resistance thereof shall conform to requirements in Annex
B.
5.3.3 Fireproofing door-closing device
5.3.3.1 Fire resistant doorsets closer shall be installed on fire resistant doorsets,
or install door-closing mechanism when the fire broke out (like the pipeline well
door).
5.3.3.2 Fire resistant doorsets closer shall pass through test by government
authorized testing institutions; property thereof shall conform to requirements
in GA 93.
5.3.3.3 Door-closing mechanism of self-closing door shall pass through test by
government authorized testing institutions.
15763.1.
5.4 Processing technique and appearance quality
5.4.1 Quality of processing technique
Use the steel material, flame resisting timber, flame resisting building board
material, or other material to fabricate door frame, door leaf frame and door leaf
panel of the fire resistant doorsets, if the door leaf is filled with materials,
fireproofing heat insulating material shall be harmless, then form the fire
resistant doorsets with the hardware fittings, quality of processing technique
thereof shall conform with requirements of subclause 5.5, subclause 5.6 and
subclause 5.7.
5.4.2 Appearance quality
As for fire resistant doorsets manufactured by using different materials,
appearance quality thereof shall respectively conform to the corresponding
requirements:
a) Fire resistant timber doorsets: chamfer and edge joint shall be solid and
smooth; face ply shall not be planed; surface shall be net and smooth,
there shall not be the plane mark, burr and hammer mark; coating shall
be even, smooth; there shall not be the embossed lacquer, air bubble lack
of coating as well as trickle.
b) Fire resistant steel doorsets: external appearance shall be smooth, clean,
be without apparent furrow or mechanical damage; coating and cladding
material shall be even, smooth; there shall not be the embossed lacquer,
pock, air bubble, lack of coating as well as trickle; welding shall be firm,
bonding point shall be evenly distributed, there shall not be false welding,
burn through, lack of weld, slag inclusion or loosen parts, outside surface
welding shall be burnished smoothly.
c) Fire resistant timber doorsets with steel structure: appearance quality shall
meet relative requirements in a) and b).
d) Other material fire resistant doorsets: external appearance shall be
smooth, there shall not be apparent furrow and fissure; part with wood or
steel part shall respectively meet relative requirement in a) and b).
5.5 Door leaf quality
Door leaf quality shall not be less than quality of design of door leaf.
NOTE: It refers to weight of door leaf.
than 3 mm.
5.8.2.5 Free gap between door leaf and lower frame and floor shall not be more
than 9 mm.
5.8.2.6 Binding face gapping between door leaf and door frame (see figure 14),
door leaf and door frame with hinged flap, door frame with lock and door frame
with upper frame shall not be more than 3 mm.
5.8.3 Plane difference of height R between door leaf and door frame
Plane difference height between upper frame of fire resistant doorsets and door
leaf shall not be more than 1 mm.
5.9 Flexibility
5.9.1 Start-stop flexibility
Fire resistant doorsets shall be easy for start-stop and be without block
phenomenon.
5.9.2 Door leaf breakaway force
Door leaf breakaway force of fire resistant doorsets shall not be more than 80
N.
NOTE: Fire resistant doorsets used in peculiar occasion is for exception.
5.10 Reliability
After 500 times of actuation test, looseness, exfoliation, gross distortion and
start-stop block phenomenon shall not occur.
5.11 Fire resistance
Fire resistance of fire resistant doorsets shall conform to requirements in Table
1.
6 Test methods
6.1 Requirement for specimen
Specimen structure and filling material shall be harmless for human body;
installation of fireproofing hardware fittings shall match the real conditions.
Unless there are the special regulations, check the fire resistant doorsets
specimen according to sequence in Clause 5.
institutions.
As for the moisture percentage result of flame resisting timber, use the water-
cut meter to test three points of fire resistant doorsets randomly, calculate the
average, the result shall meet requirement in 5.2.2.3 of this Standard.
6.3.3 Building board
According to requirements of GB/T 8625-2005, hard burning nature of timber
shall be tested, result shall meet requirement of 5.2.3.2 of this Standard; or else
there shall be the survey report issued by the government authorized testing
institutions.
As for the moisture percentage result of flame resisting building board, use the
water-cut meter to test three points of fire resistant doorsets randomly, calculate
the average, the result shall meet requirement in 5.2.3.3 of this Standard.
6.3.4 Steel products
6.3.4.1 Material used in door frame, door leaf and reinforcing member of fire
resistant doorsets shall be with the qualified survey report offered by producer.
6.3.4.2 Use micrometer to measure the thickness of steel material, test three
points randomly, calculate the average, the result shall meet requirement in
Table 3 of this Standard.
6.3.5 Other materials
Other materials used in fire resistant doorsets shall be harmless for human body,
whose toxicity risk classification shall be tested according to GB/T 20285-2006
and whose hard burning nature shall be tested according to GB/T 8625-2005,
combustion performance shall be tested according to GB 8624-2006, the
outcome shall meet the requirement in 5.2.5 of this standard; or else, there shall
be corresponding survey report issued by government authorized testing
institutions.
6.3.6 Agglomerant
According to requirements of GB/T 20285-2006, toxicity risk classification shall
be tested, result shall meet requirement of 5.2.6.2 of this Standard; or else there
shall be the survey report issued by the government authorized testing
institutions.
6.4 Fittings
6.4.1 Fireproofing lock
Proceed test according to annex; or else there shall be survey report issued by
government authorized testing institutions.
6.4.2 Fireproofing hinged flap (hinge)
Use Vernier calipers to test the plating thickness of fireproofing hinged flap
(hinge), take three points randomly and calculation the average;
Fire resistance of fireproofing hinged flap (hinge) shall be tested according to
Annex B; or else there shall be survey report issued by government authorized
testing institutions.
6.4.3 Fireproofing door-closing device
Door closer of fire resistant doorsets shall be tested according to requirements
of GA 93; or else there shall be survey report issued by government authorized
testing institutions.
Door-closing mechanism of fire resistant doorsets shall be able to close the
door when receiving the fire alarm signal, other capabilities shall also be carried
out according to corresponding standard; or else there shall be corresponding
survey report issued by government authorized testing institutions.
6.4.4 Fireproofing sequence device
Fix the fireproofing sequence device to the fire resistant doorsets according to
real conditions, at the same time, open the door leaf and release the door leaf,
make sure whether the fire resistant doorsets can be shut down by fireproofing
sequence device; test the fire resistance of fireproofing sequence device
according to Annex C, or else there shall be the survey report issued by
government authorized testing institutions.
6.4.5 Fireproofing bolt
Adopt visual measurement and hand feeling to test fireproofing bolt on the fire
resistant doorsets, test the fire resistance of fireproofing bolt according to
requirements in Annex D, or else there shall be corresponding survey report
issued by government authorized testing institutions.
6.4.6 Cover fillet
Adopt visual measurement and hand feeling to test installation of cover fillet of
fire resistant doorsets.
6.4.7 Fireproofing sealing element
Make visual measurement to make sure whether there is the fireproofing
It includes door frame, door leaf and fire resistant doorsets which are consisted
of such fire resistant hardware matching parts as flameproof lock, door closer
and sequence controller.
6.11.3 Test procedure
6.11.3.1 Fix the specimen onto a framework.
6.11.3.2 Start and close the door leaf once with its cycle of operation of 8 s ~
14 s and the opening angle of 70°, record the times of operation. During the
testing, the following shall be recorded: whether the matching parts of fire
resistant doorsets are loose, falling, badly deformed or not, and whether there
is start-stop problem.
6.12 Fire resistance
6.12.1 Test procedure
Fit the specimen on a test framework according to the operating conditions. The
specimen shall be inspected before the fire resistance test and the door leaf
shall be flexible. Close the door leaf with door closer-holder (e.g. door closer)
and close the latch bolt of the flameproof lock, do not close the door leaf through
the key lock; as for the doors for special purpose (for instance: door for the
piping shaft), the door leaf can be closed through the key lock, but the key shall
be taken away.
The fire resistance test shall be carried out according to the provisions of GB/T
7633.
NOTE: The test of fit tolerance, flexibility and fire resistance for the specimen shall be carried
out on the same framework under the same state.
6.12.2 Determination conditions for fire resistance
6.12.2.1 Fire integrality
It shall be determined according to the provisions of GB/T 7633.
6.12.2.2 Fire insulation
It shall be determined according to the provisions of GB/T 7633.
7 Inspection rules
7.1 Factory-exit inspection
7.1.1 The regular factory-exit inspection items include: 5.1, 5.2.2.3, 5.2.3.3,
upper frame
32 Gap between the double swing door 5.8.2.4 6.9.2 C
33 Gapping between the door frame and lower frame or ground 5.8.2.5 6.9.2 C
34 Gapping between the door leaf and abutted surface of the door frame 5.8.2.6 6.9.3 C
35 Height difference of the door frame and door leaf plane 5.8.3 6.9.4 C
36 Start-stop flexibility 5.9.1 6.10.1 A
37 Opening force 5.9.2 6.10.2 B
38 Reliability 5.10 6.11 A
39 Fire resistance 5.11 6.12 A
8 Marking, packaging, transportation and storage
8.1 Marking
8.1.1 There shall be a permanent name plate on the distinct place of each fire
resistant doorsets. The name plate shall include the following contents:
a) Product name, model, specification and trademark (if any);
b) Name, labeling and plant site of the manufacture;
c) Date of production and manufacturing batch number of the product;
d) Voluntary standards.
8.1.2 The name plate of product shall be manufactured in accordance with the
provisions of GB/T 13306.
8.2 Packaging, transportation and use instructions
The packaging of products and hardware matching parts shall be safe, reliable
and convenient to handle, transport and store. The packaging and
transportation of the products shall be compliant to the provisions of GB/T 6388.
The following written materials shall be provided:
a) Approved certificate for product, it shall be expressed according to the
provisions of GB/T 14436;
b) Product description, it shall be expressed according to the provisions of
GB 9968.1;
c) Packing list;
Annex A
(normative)
Requirements and test methods for flameproof locks
A.1 Requirements
A.1.1 The stability, flexibility and appearance quality of flameproof locks shall
meet the provisions of QB/T 2474.
A.1.2 Fire resistance of flameproof locks
A.1.2.1 The fire resistance time of flameproof locks shall not be less than that
of fire resistant doorsets.
A.1.2.2 In the fire resistance test process, the flameproof locks shall be free
from distinct deformation and fusion.
A.1.2.3 In the fire resistance test process, the flameproof locks shall be free
from flame-over phenomenon.
A.1.2.4 In the fire resistance test process, it shall be guaranteed that the door
leaf of the fire resistant doorsets can remain off.
A.2 Test methods
A.2.1 The stability, flexibility and appearance quality of the flameproof locks
shall be tested according to the provisions of QB/T 2474.
A.2.2 Fire resistance test of flameproof locks
A.2.2.1 The flameproof locks shall be installed at the fire resistant doorsets
according to the in-service use conditions.
A.2.2.2 Fire resistance test shall be carried out according to the temperature
rise and furnace pressure conditions specified in GB/T 7633.
A.2.2.3 In the fire resistance test process, the phenomenon shall be observed
and recorded according to the requirements of A.1.2.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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