Hatches

Manholes - a key element of underground infrastructure

Manholes are an essential component of sewage systems and underground infrastructure.   They provide access to manholes and installations located below the ground surface. At Onninen we offer a wide range of top quality manholes. Our products meet strict safety and durability standards.

The range of manholes in our wholesaler includes various models. Round and square cast iron manholes and plastic manholes are available. Each type has its own unique applications and advantages. Cast iron manholes are exceptionally durable. They work well in places with high traffic. Plastic manholes are lighter and corrosion resistant.

Variety of hatches for different applications

Our offer includes products from renowned brands. Kzo, Kaczmarek, Bohamet - Armatura and Wavin are leaders in the industry.   Their hatches guarantee reliability and long-term use.   We also offer accessories for manholes. Our range includes rubber seals, test adapters and concrete cones. These elements ensure tightness and correct installation of manholes.

The selection of the right hatch depends on many factors. The expected loads and environmental conditions are key. The strength class and material of manufacture are also important. Our consultants help in selecting the optimal solution. They take into account the specificity of the investment and the customer's needs.

• Cast iron manholes - ideal for roads and squares with high traffic
• Plastic manholes - lightweight and corrosion-resistant, good for green areas
• Composite hatches - combine the advantages of metal and plastics

Innovations in the world of manholes

The manhole industry is constantly evolving. New technologies and materials are emerging.   At Onninen we follow these trends and introduce innovative solutions to our offering.   Manholes with intelligent monitoring systems are becoming increasingly popular. They allow remote monitoring of the condition of underground infrastructure.

Recently, we delivered intelligent manholes to a large city project. The system warns of unauthorized opening attempts. It also provides information on the water level in the manholes. This significantly facilitates the management of the sewage network. Such solutions are the future of urban infrastructure.

In the case of network reorganization, it is most often necessary to replace manholes. Our experts advise on the selection of appropriate models. They take into account new loads and technical requirements. We provide comprehensive service - from design to delivery and installation.

Practical aspects of selecting and installing manholes

Many customers ask us about the criteria for selecting manholes.   Three aspects are key: load class, material and dimensions.   The load class must correspond to the intended use of the land. For pavements, class B125 is sufficient, for roads D400 or higher will be needed.

The material of the manhole affects its durability and resistance. Cast iron works well in difficult conditions. Plastics are lightweight and corrosion-resistant. The dimensions must be matched to the manhole. Standard diameters are 600 mm, but we also offer other sizes.

1. Determine load class based on location
2. Choose a material that is suitable for the environmental conditions
3. Match the dimensions of the manhole to the manhole
4. Pay attention to additional features (ventilation, security)

Our experience shows that proper installation is as important as the selection of the hatch. Incorrect installation can lead to damage. We offer training in installation for our customers. We also provide technical support at every stage of implementation.

In everyday practice, we see how important the quality of manholes is. Failures and leaks can lead to serious problems. That is why we focus on products from proven brands. They guarantee safety and long-term use.

Onninen recommends comprehensive solutions for sewage systems.   In addition to manholes, we offer sewage wells and accessories. Our product range also includes pumps and control devices. We provide full technical and logistic support.

We invite you to contact our consultants. They will help you choose the best solutions for your projects. We guarantee professional service and fast order fulfillment. With Onninen, the construction and modernization of sewage networks becomes simpler and more effective.