GB 12142-2025 Safety requirements for portable metal ladders 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 H
National Standard of the People's Republic of China
GB 12142-2025
Safety requirements for portable metal ladders
便携式金属梯安全要求
Issue date: 2025-12-31 Implementation date: 2027-01-01
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 Technical Requirements
4.1 General Requirements
4.2 Structural Requirements
4.3 Performance Requirements
5 Test Methods
5.1 Test Sequence
5.2 General Tests
5.3 Leaning Ladders
5.4 Extending Ladders
5.5 Standing Ladders
5.6 Telescopic Ladders
5.7 Hinged Ladders
5.8 Combination Ladders
6 Selection and Maintenance Requirements
6.1 Selection
6.2 Use
6.3 Maintenance
7 Marking
7.1 General Requirements
7.2 Product Data Information Marking
7.3 Safety Marking
Annex A (Normative) Test Sequence
Safety Requirements for Portable Metal Ladders
1 Scope
This document specifies the structural dimensions, performance, usage, and marking requirements for portable metal ladders. It describes the test methods for portable metal ladders. This document applies to portable metal leaning ladders, extending ladders, standing ladders, telescopic ladders, hinged ladders, and combination ladders.
This document does not apply to ladders for special purposes, such as: fixed ladders, fire ladders, insulating ladders.
2 Normative References
The following documents contain provisions which, through normative 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 17889.1-2021 Ladders — Part 1: Terminology, types and functional sizes
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 17889.1-2021 and the following apply.
3.1
portable metal ladder
A ladder whose stiles are made of metal material and which is convenient for manual carrying and handling.
3.1.1
leaning ladder
A portable metal ladder (3.1) that requires leaning against other fixed objects for use and whose length cannot be adjusted.
[SOURCE: GB/T 17889.1-2021, 3.2, modified]
3.1.2
extending ladder
A portable metal ladder (3.1) consisting of two or more sections, and whose length can be changed by raising or lowering one section at a time.
[SOURCE: GB/T 17889.1-2021, 3.2.1.3, modified]
3.1.3
standing ladder
A portable metal ladder (3.1) that can be used while self-supported.
[SOURCE: GB/T 17889.1-2021, 3.3, modified]
3.1.4
telescopic ladder
A portable metal ladder (3.1) consisting of three or more sections, where each telescoping section has only one rung/tread, and the stiles can telescope.
[SOURCE: GB/T 17889.1-2021, 3.1.4, modified]
3.1.5
hinged ladder
A portable metal ladder (3.1) equipped with a hinged joint device and having at least one preset locking position.
[SOURCE: GB/T 17889.1-2021, 3.1.3, modified]
3.1.6
combination ladder
A portable metal ladder (3.1) consisting of two or more sections, which can be used as a leaning ladder or a standing ladder.
[SOURCE: GB/T 17889.1-2021, 3.4, modified]
3.2
top cap
The horizontal component at the uppermost part of a portable metal standing ladder.
3.3
maximum length
The length of an extending ladder when all extendable sections are fully extended (maintaining the required minimum overlap) or of a telescopic ladder when fully extended.
3.4
highest standing level
The position of the highest tread (or rung) on which the user is permitted to stand during intended use.
3.5
test failure
Visible damage to the ladder structure or its components caused by a test.
NOTE: Visible damage includes folds, twists, shears, tears, fractures, etc.
3.6
ultimate failure
Severe damage to the ladder structure or its components that renders it unusable, caused by a test.
3.7
locking indicator
A mechanism or component that shows the locked/unlocked status of the rung/tread section(s) or part(s) thereof on a telescopic ladder.
3.8
locking pin
A component that locks each rung/tread section of a telescopic ladder and serves as the locking element in the locking mechanism.
3.9
decking component
One or more components forming a standing surface, enabling a multi-hinged ladder to be used in a platform configuration.
4 Technical Requirements
4.1 General Requirements
4.1.1 Rated Load
The rated load capacity (m) of a portable metal ladder shall not be less than 100 kg.
NOTE: The rated load capacity is determined based on the combined weight of the ladder user and any tools or materials carried.
The rated load (M) for a portable metal ladder is the product of the rated load capacity (m) and the acceleration due to gravity, as shown in formula (1).
4.1.2 Surface
Accessible surfaces of the ladder shall be free from sharp edges, burrs, and other structural defects.
Structural components made of materials prone to corrosion shall receive surface anti-corrosion treatment.
4.1.3 Anti-slip
The bottom of the ladder stiles shall be fitted with anti-slip feet.
Standard
GB 12142-2025 Safety requirements for portable metal ladders (English Version)
GB 12142-2025 Safety requirements for portable metal ladders 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 H
National Standard of the People's Republic of China
GB 12142-2025
Safety requirements for portable metal ladders
便携式金属梯安全要求
Issue date: 2025-12-31 Implementation date: 2027-01-01
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 Technical Requirements
4.1 General Requirements
4.2 Structural Requirements
4.3 Performance Requirements
5 Test Methods
5.1 Test Sequence
5.2 General Tests
5.3 Leaning Ladders
5.4 Extending Ladders
5.5 Standing Ladders
5.6 Telescopic Ladders
5.7 Hinged Ladders
5.8 Combination Ladders
6 Selection and Maintenance Requirements
6.1 Selection
6.2 Use
6.3 Maintenance
7 Marking
7.1 General Requirements
7.2 Product Data Information Marking
7.3 Safety Marking
Annex A (Normative) Test Sequence
Safety Requirements for Portable Metal Ladders
1 Scope
This document specifies the structural dimensions, performance, usage, and marking requirements for portable metal ladders. It describes the test methods for portable metal ladders. This document applies to portable metal leaning ladders, extending ladders, standing ladders, telescopic ladders, hinged ladders, and combination ladders.
This document does not apply to ladders for special purposes, such as: fixed ladders, fire ladders, insulating ladders.
2 Normative References
The following documents contain provisions which, through normative 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 17889.1-2021 Ladders — Part 1: Terminology, types and functional sizes
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 17889.1-2021 and the following apply.
3.1
portable metal ladder
A ladder whose stiles are made of metal material and which is convenient for manual carrying and handling.
3.1.1
leaning ladder
A portable metal ladder (3.1) that requires leaning against other fixed objects for use and whose length cannot be adjusted.
[SOURCE: GB/T 17889.1-2021, 3.2, modified]
3.1.2
extending ladder
A portable metal ladder (3.1) consisting of two or more sections, and whose length can be changed by raising or lowering one section at a time.
[SOURCE: GB/T 17889.1-2021, 3.2.1.3, modified]
3.1.3
standing ladder
A portable metal ladder (3.1) that can be used while self-supported.
[SOURCE: GB/T 17889.1-2021, 3.3, modified]
3.1.4
telescopic ladder
A portable metal ladder (3.1) consisting of three or more sections, where each telescoping section has only one rung/tread, and the stiles can telescope.
[SOURCE: GB/T 17889.1-2021, 3.1.4, modified]
3.1.5
hinged ladder
A portable metal ladder (3.1) equipped with a hinged joint device and having at least one preset locking position.
[SOURCE: GB/T 17889.1-2021, 3.1.3, modified]
3.1.6
combination ladder
A portable metal ladder (3.1) consisting of two or more sections, which can be used as a leaning ladder or a standing ladder.
[SOURCE: GB/T 17889.1-2021, 3.4, modified]
3.2
top cap
The horizontal component at the uppermost part of a portable metal standing ladder.
3.3
maximum length
The length of an extending ladder when all extendable sections are fully extended (maintaining the required minimum overlap) or of a telescopic ladder when fully extended.
3.4
highest standing level
The position of the highest tread (or rung) on which the user is permitted to stand during intended use.
3.5
test failure
Visible damage to the ladder structure or its components caused by a test.
NOTE: Visible damage includes folds, twists, shears, tears, fractures, etc.
3.6
ultimate failure
Severe damage to the ladder structure or its components that renders it unusable, caused by a test.
3.7
locking indicator
A mechanism or component that shows the locked/unlocked status of the rung/tread section(s) or part(s) thereof on a telescopic ladder.
3.8
locking pin
A component that locks each rung/tread section of a telescopic ladder and serves as the locking element in the locking mechanism.
3.9
decking component
One or more components forming a standing surface, enabling a multi-hinged ladder to be used in a platform configuration.
4 Technical Requirements
4.1 General Requirements
4.1.1 Rated Load
The rated load capacity (m) of a portable metal ladder shall not be less than 100 kg.
NOTE: The rated load capacity is determined based on the combined weight of the ladder user and any tools or materials carried.
The rated load (M) for a portable metal ladder is the product of the rated load capacity (m) and the acceleration due to gravity, as shown in formula (1).
4.1.2 Surface
Accessible surfaces of the ladder shall be free from sharp edges, burrs, and other structural defects.
Structural components made of materials prone to corrosion shall receive surface anti-corrosion treatment.
4.1.3 Anti-slip
The bottom of the ladder stiles shall be fitted with anti-slip feet.
