Tips: You may not notice these cold common sense

A safety helmet is a shallow dome hat made of steel or similar material that is used to protect the top of the head in head protection. Impact absorption properties, puncture resistance, lateral rigidity, electrical insulation, and flame retardancy are requirements for the basic technical performance of the helmet.

Hard hat requirements:

1, the top of the cap should be strengthened. Can be made of light top or ribbed structure. The shell is made without edges, with edges or curls.

2, plastic cap lining should be made of a structure with a rear hoop, can freely adjust the cap hoop size (sub-pull adjustment, button adjustment, knob adjustment and so on.

3. The chin strap with no rear hoop lining is made of “Y” type, with the rear hoop, allowing single roots.

4. The headband on the forehead of the contact should be breathable and absorbent.

5. The gasket around the cap hoop can be made into strips or blocks and leave space for air circulation.

6. Hard hat manufacturers must strictly follow the national standards of GB2811-2007 for production.

7. Y-type helmets are not allowed to be laterally pressed, because Y-type helmets only protect the damage caused by the linear impact from top to bottom and cannot protect the pressure from the side.

Hard hat classification:

There are two types of hard hat products, namely, general operation (Y) helmets and special operations (T) helmets, which are divided into five categories.

T1 applies to workplaces with fire sources;

T2 applies to underground, tunnel, underground engineering, logging and other operations;

T3 applies to flammable and explosive workplaces;

T4 (insulation) is suitable for live working places;

T5 (low temperature) is suitable for low temperature operation.

Each kind of helmet has a certain technical performance index and scope of application, so the selection should be based on the use of the industry and operating environment to buy the appropriate product. Consumers can choose the right variety according to their own needs. According to the industry and operating environment used, choose helmets.

For example, the construction industry generally chooses type Y helmets;

In the power industry, T4 (insulated) safety helmets should be used for contact with power grids and electrical equipment;

In the flammable and explosive environment, T3 helmets should be selected.