GB7059-2007
Safety requirements for portable wood ladders
便携式木梯安全要求
GB 7059-2007 is a current mandatory Chinese national standard for Safety requirements for portable wood ladders. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Feb 1, 2008.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the design, manufacturing, testing, and safe usage of portable wood ladders used in various production activities. It specifically covers portable wood single ladders (straight ladders) and portable wood step ladders (including trestle ladders). It is not applicable to ladders made of non-wood materials or specialized ladders designed for specific professional rescue operations. Manufacturers of wooden access equipment for the Chinese market must comply with these provisions.
Technical requirements
The standard mandates strict material criteria, requiring that selected wood be properly dried with a moisture content not exceeding 15%, and explicitly prohibits the use of low-density wood. It defines specific rated load classifications (90kg, 100kg, 110kg, and 135kg) that dictate the structural dimensions and strength requirements of ladder components. For structural integrity, the standard specifies detailed requirements for stiles, rungs, and top caps. It outlines the necessary dimensions for step ladders and single ladders based on their length and rated load. Furthermore, it mandates the use of metal reinforcements and spreaders to ensure stability during operation. Manufacturers must ensure that all wooden components are free from critical defects such as knots, severe slope of grain, and cracks that could compromise structural integrity. The standard also includes comprehensive usage and marking requirements. It specifies the correct setup angles (e.g., 75 degrees for single ladders) and prohibits improper use, such as standing on the top cap of a step ladder. All ladders must bear permanent warning labels and product data information, including rated load and highest standing level, clearly marked on the stiles.
Testing methods
The standard outlines several critical testing procedures to verify structural safety. The Inclined Load Test evaluates the ultimate failure resistance of single ladders under specific vertical loads. The Stile Cantilever Drop Test assesses the durability of ladder stiles by dropping them onto a concrete surface. For step ladders, the standard mandates a Pressure Test applying loads up to four times the rated capacity. Stability is rigorously evaluated through Lateral, Front, and Rear Stability Tests, as well as a Torsional Stability Test to ensure the ladder does not tip over under horizontal forces. Additionally, a Slip Resistance Test is conducted on sanded plywood surfaces to measure lateral displacement, ensuring the ladder feet provide adequate grip.
FAQs
What products are regulated under GB 7059-2007?
It applies to portable wood single ladders (straight ladders) and portable wood step ladders (including trestle ladders) used in various production activities. It does not cover ladders made of other materials like fiberglass or aluminum.
Are there any significant updates from the previous version of GB 7059?
The current version is a mandatory standard that merges and replaces the older GB 7059.1-1986 and GB 7059.2-1986. It introduces a rated load classification system (90kg to 135kg) and adds new structural performance tests, such as the torsional stability test and the stile cantilever drop test.
How does GB 7059-2007 differ from international ISO standards for ladders?
While it references terminology and dimensions from GB/T 17889.1, GB 7059-2007 is a mandatory Chinese national standard with specific requirements for wood material properties, moisture content, and distinct testing procedures tailored to domestic safety regulations.
The summary above provides a high-level overview of GB 7059-2007. 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 7059-2007 today to access all detailed parameter tables, dimensional drawings, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- C68
- ICS
- 13.100
- Competent department
- Ministry of Emergency Management
- Technical committee
- Ministry of Emergency Management
Relationships
Replaces:GB 7059.2-1986, GB 7059.1-1986