What are the design requirements for safety helmets?

The design of safety helmets must strictly adhere to national standards (GB 2811-2019, Head Protection – Safety Helmets.

I. Classification and Classification Marking Requirements

. Classification by Performance:

General Type (P): Suitable for general workplaces; possesses basic protective capabilities.

Special Type (T): In addition to basic protection, possesses one or more special properties (e.g., flame retardancy, lateral rigidity, resistance to low temperatures, resistance to extreme high temperatures, electrical insulation, anti-static properties, resistance to molten metal splashes, etc.); suitable for specialized workplaces.

. Classification Marking: Consists of the product name and performance markings. The corresponding performance characteristics must be selected and marked in the specified sequence (e.g., a safety helmet possessing both lateral rigidity and low-temperature resistance would be marked as: Safety Helmet (T LD -30℃)).

. Basic Structure: Composed of a shell, a suspension system (including a headband, sweatband, crown straps, shock-absorbing pads, etc.), a chin strap, and accessories.

II. Labeling and Instruction Requirements

. Permanent Marking: Must be clearly and permanently displayed on the inner surface of the helmet body. It must include, at a minimum: the standard number (GB 2811), manufacturer's name, production date (Year/Month), product name, classification marking, and mandatory service life expiration date.

. Product Instructions: Each safety helmet must be accompanied by an instruction manual containing information on fitting and adjustment methods, warning statements (e.g., the requirement to replace the helmet after sustaining a severe impact), intended usage environments, maintenance and care procedures, and criteria for disposal.

Note: The above constitutes general design specifications. The actual design of specific products must be adapted to meet the unique protective requirements of the specific working environment (e.g., power generation, chemical industry, high-altitude operations, etc.).