GB12142-2025

Safety requirements for portable metal ladders

便携式金属梯安全要求

GB 12142-2025 は施行予定の中国強制国家規格です：Safety requirements for portable metal ladders。業界：食品。テーマ：製品安全。施行日：2027年1月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard applies to the safety requirements, testing methods, and marking of portable metal ladders. It specifically covers leaning ladders, extending ladders, standing ladders, telescopic ladders, hinged ladders, and combination ladders. It is not applicable to special-purpose ladders such as fixed ladders, fire ladders, or insulated ladders.

技術要求

The standard specifies comprehensive structural and performance criteria for portable metal ladders. It mandates a minimum rated load of 100 kg and requires anti-slip treatments on accessible surfaces, steps, and platforms. Manufacturers must ensure the elimination of sharp edges and provide adequate corrosion protection for metal components. For structural design, the standard defines precise dimensional limits for various ladder types, including step spacing, width, and maximum extended lengths. For instance, it outlines specific overlap requirements for extending ladders and locking mechanisms for telescopic sections. Compliance with these dimensional constraints is mandatory to prevent structural failure during operation. Performance requirements dictate that ladders must withstand specific loads without experiencing ultimate failure or excessive permanent deformation. Key evaluations include ladder strength, step strength, cantilever strength, and torsional stability. The ladder must remain fully functional without visible cracks after testing. Additionally, the standard introduces specific safety measures for specialized designs, such as anti-pinch mechanisms for telescopic ladders and platform stability requirements for hinged ladders. It also mandates clear safety markings and warnings, such as "Danger: Do not stand on or above this step" and electrical hazard precautions.

試験方法

The standard outlines a rigorous sequence of testing procedures to verify compliance, starting with visual inspections followed by small-load and large-load tests. Key evaluations include the ladder strength test, which applies a load of 1.83 times the rated load to the center step. Other critical tests involve step torsion, cantilever strength, and ladder foot pull-out tests. Specific tests like the bottom slippage test are conducted on smooth glass surfaces to verify anti-slip efficacy, while stability tests apply lateral and forward horizontal forces to ensure the ladder does not tip over. The sequence is strictly defined in Annex A to ensure consistent evaluation across all ladder types.

よくある質問

What products are regulated under GB 12142-2025?

The standard regulates portable metal ladders, specifically including leaning ladders, extending ladders, standing ladders, telescopic ladders, hinged ladders, and combination ladders. It does not apply to special-purpose ladders such as fixed ladders, fire ladders, or insulated ladders.

Are there any significant updates from the previous version of GB 12142?

Compared to its 2007 version, the 2025 revision updates requirements for rated load and step spacing. It also introduces new structural and performance requirements for telescopic ladders and hinged ladders, adds tool rack and handrail specifications, and includes new warnings for hand pinching risks and mandatory test sequences.

How does GB 12142-2025 relate to international ISO standards?

The standard references GB/T 17889.1-2021 for terminology and functional dimensions. While it shares similar safety principles with international standards, manufacturers must strictly adhere to the specific structural limits and testing procedures defined in this GB standard to achieve compliance for the Chinese market.

The summary above provides a high-level overview of GB 12142-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 12142-2025 today to access all detailed parameters, tables, and testing procedures.

適用のヒント

種別: 製品
CCS: 68
ICS: 13.100
所管部門: Ministry of Emergency Management
技術委員会: National Technical Committee on Work Safety of Standardization Administration of China