In-ground speakers

Ground columns - comprehensive solutions for installations

Underground columns are a key element of modern infrastructure systems.   At Onninen we offer a wide selection of these products. Our solutions meet the highest quality and safety standards. We supply ground columns from leading manufacturers as well as our own brands. We take care of comprehensive customer service in this area.

Our experience shows that choosing the right ground column is crucial. It affects the efficiency and durability of the entire installation. That is why we attach great importance to technical advice. We help clients choose optimal solutions.

Types of underground columns available in Onninen's offer

Our range includes various types of underground columns. We offer models for both gas and water installations. Columns made of steel and plastic are available.   Polyethylene underground columns are particularly popular.   They exhibit high resistance to corrosion and mechanical damage.

Among the available products we can distinguish:

• Steel approaches
• PE/steel pipe connections
• Wall Passages
• Polyethylene gas connections
• Steel gas connections
• Polyethylene connections

Each of these elements plays an important role in the system. We select them individually to the customer's needs and the specifics of the installation. Our consultants will be happy to help you choose the optimal solution.

Brands of ground columns in the Onninen offer

Our offer includes products from renowned manufacturers. Our own brands occupy a special place: Onnline, FXA and Opal.   We focus on the quality and reliability of the offered ground columns.   Our own brands combine high quality with attractive prices. They are an excellent choice for demanding customers.

We often come across the question about the differences between brands. Each of them has its unique features and applications. Onnline is a series of products with universal applications. FXA specializes in solutions for more demanding installations. Opal, on the other hand, offers economical but reliable products.

Criteria for selecting underground columns

Choosing the right underground column depends on many factors. The key factors are:

• Type of medium (gas, water)
• Installation parameters (pressure, temperature)
• Ground conditions
• Legal requirements and technical standards

In our daily practice we see how important an individual approach is.   Each installation has its own unique requirements. That is why we always recommend consulting our specialists. They will help you choose the optimal solution.

Recently, we faced a challenge with a project for a large housing estate. The requirement was for underground columns with increased corrosion resistance. We used innovative polyethylene connections with an additional protective coating. The effect exceeded the investor's expectations.

In the case of the reorganization of the gas network in the older part of the city, another challenge arose. It was necessary to connect the new installation with the existing, steel network. We used special PE/steel pipe connections. They ensured the tightness and durability of the connection.

Onninen recommends using comprehensive solutions. This means selecting not only the ground columns themselves, but also accessories. Appropriate seals, connectors and fastening elements are equally important. They ensure long-term and failure-free operation of the entire system.

Many customers ask us about the safety aspects of underground columns.   This is a key issue, especially in the case of gas installations. Our products meet strict safety standards. Additionally, we offer training in proper assembly and operation.

Our experience shows that investing in high-quality underground columns pays off. It translates into long-term and failure-free operation of the installation. It reduces operating costs and the risk of failure. That is why we always advise choosing proven, certified products.

At Onninen, we focus on comprehensive customer service. We offer not only products, but also technical advice. Our specialists help in selecting the optimal solutions. They support customers at every stage of project implementation.   We invite you to contact us and take advantage of our experience in the field of underground columns.