Frequently asked questions

induo® poles are manufactured individually to customer specifications and comply in particular with the requirements of the European standards EN 14229 and BS 1990. In addition, they can be produced in accordance with further internationally recognised standards such as ENA TS 43-88 and NF C 67-100.

Manufacturing takes place under CE-monitored production and in accordance with the quality and environmental management standards of our certifications pursuant to ISO 9001:2015 and ISO 14001:2015.

As standard, we produce round wood poles in lengths of 6 to 16 metres. Special lengths are also possible on request - in both creosote-impregnated and salt-impregnated versions.

Technically, impregnation of poles up to 26 metres in length is possible. The specific version depends on the customer specification, area of application, wood availability and the respective technical requirements.

Yes, we deliver our products worldwide to five continents - by truck, sea freight container or in combined logistics. Depending on the customer’s wishes, delivery is made either directly to the respective destination or alternatively to the desired seaport.

For many years we have been successfully realising international projects, including in Libya, North Africa, the Middle East and Asia. Our customers benefit from our experience in planning and implementing demanding transport and logistics solutions.

We guarantee fast order processing thanks to a high stock level. Whether a single call-off or a complex large-scale project - we develop tailor-made logistics solutions and detailed delivery schedules for you, ensuring reliable planning at all times.

Creosote-impregnated poles are designed for particularly demanding operating conditions. They offer very high resistance to extreme climatic and soil conditions and are therefore particularly suitable for energy infrastructure, overhead lines and regions with high exposure to moisture, heat, salt air or difficult soil conditions.

Salt-impregnated poles meet strict environmental requirements and are frequently used where ecological specifications, modern grid standards or special requirements for the area of application are paramount.

Yes, absolutely. For the environmentally sound protection of our induo® round wood poles we rely on state-of-the-art technology and ecologically thoroughly tested products. As preservatives, with a 3 to 6 percent salt solution, we primarily use the chromate-, arsenic- and boron-free branded products Tanalith, Wolmanit CX 8 and Korasit KSM/KS2.

Safe deep protection using the pressure impregnation process
Wooden poles in outdoor areas are exposed to extreme weather and direct ground contact. We cover this special protection requirement seamlessly through the pressure impregnation process. The modern, fixing salts penetrate deep into the wood and offer safe, lasting protection against fungi, soft rot and insects - without harming the environment.

The advantages of induo® salt impregnation at a glance:

• Highest safety standards: All impregnations we use comply with the strictest global requirements and are approved worldwide.
• Harmless to health: There is no health hazard whatsoever from natural wood constituents or from the applied preservative.
• Ideal for sensitive use: Perfectly suited to all applications in which people come into direct contact with the wood.
• Characteristic appearance: After the salts have been fixed in the wood, the round wood poles acquire their typical, slightly greenish colouring.

Yes, we supply our poles in the efficient “Plug & Play” format. To maximise the acceleration of your workflows on the construction site, we handle the complete prefabrication directly at the works.

Precision to your specifications
Production takes place exactly according to your customer-specific requirements, on the basis of technical production drawings prepared especially by induo®.

Our factory preparation service includes:

• Precise woodworking: Carrying out all necessary millings, notches and drillings before impregnation.
• Complete assembly: Professional fitting of LoPro wood protection bandages
• Certification & traceability: Applying all necessary certification markings, labels and seals.

Thanks to this seamless preparation, the poles are ready for immediate use on delivery. This saves you valuable time and on-site assembly costs.

Flexible, global and extremely fast. Thanks to our strategic stock of more than 80,000 poles, we guarantee immediate support for your investment projects without long waiting times. We deliver exactly to your requirements in accordance with the international standards DAP (delivered at the named place) or CFR (freight to the desired seaport) under the current Incoterms rules.

An overview of our logistics capacities:

• Regional & Europe-wide: Reliable just-in-time delivery of individual truck loads directly to your construction site or central warehouse.
• Worldwide & overseas: Handling of large-scale projects via efficient bulk container shipping from seaports on all five continents.

Whether a large-scale project or a short-term need - our crisis-proof supply chain safeguards your schedules.

All four agents are chromium-free and certified. Tanalith® is best suited for ground contact, Wolmanit® is distinguished by its exceptional resistance to leaching, and Korasit® offers additional protection against termites, and Impralit® provides preventive protection against wood-destroying insects (incl. termites), rot fungi and soft rot.

Our poles comply with EN 14229, DIN 48350, ENA TS 43-88 and BS 1990. The company holds ISO 9001:2015 and ISO 14001:2015 certificates as well as CE EN 14229 certified pole production.

At induo® there is no minimum order quantity. We treat every project with the same precision - regardless of the order size. Every enquiry is analysed and assessed by us individually.

Your path to the optimal solution:
Simply contact our experienced engineering team. We examine your requirements in detail and work out the logistically and economically optimal delivery option for your specific project.

Yes. Because wood does not corrode, creosote-impregnated wooden poles are particularly suitable for locations with salty air, proximity to the coast or aggressive climatic conditions.

Creosote-impregnated wooden poles have a very high electrical resistance and poor conductivity. Wood is by nature a good insulator, and creosote impregnation does not significantly alter this property either. Wooden poles therefore offer a technical advantage over conductive materials such as steel, particularly in the field of power and telecommunications lines.

Creosote-impregnated wooden poles are designed for particularly demanding soil and climatic conditions. Their actual service life depends on factors such as soil moisture, salt exposure, biological activity, type of wood, impregnation quality and regular inspection.

In practice, properly impregnated wooden poles frequently achieve service lives of 40 to 60 years, even in difficult soil conditions. Under favourable operating conditions and with appropriate maintenance, considerably longer service lives are also possible.

For our induo® creosote-impregnated poles we use exclusively high-quality Nordic pine (Pinus sylvestris). Due to its natural structure, this type of wood is particularly well suited to the production of durable wooden poles.

A decisive advantage of Nordic pine is its pronounced sapwood zone. It enables deep, uniform and durable absorption of the wood preservative. As a result, the creosote impregnation can effectively penetrate the protection-relevant areas of the wood and ensure long-term protection against moisture, fungi, insects and biological decomposition.

By comparison, spruce wood, particularly after drying, can only be impregnated to a very limited extent and exclusively at the surface. For this reason, spruce poles are not approved in almost all international specifications for power and telecommunications lines.

The use of Nordic pine is therefore a central quality factor for us: it combines high mechanical strength, very good impregnability and lasting durability - ideal prerequisites for reliable wooden poles in the international energy and telecommunications sector.

For purely qualitative reasons. Pine wood from the cool regions of Europe is characterised by a wide and very uniform sapwood zone. This biological property surpasses that of spruce wood many times over, for example in its ability to deeply absorb preservatives and in saturation strength. Our unimpregnated pine poles guarantee an ideal basis for impregnation using the pressure impregnation process.

Raw wood exposed to aggressive weather influences has a limited durability. Studies for the Central European climate show that an unimpregnated trunk lasts 1 to 4 years directly in the ground, and approximately 2 to 5 years without direct ground contact. That is why our untreated poles are always intended for further professional protective treatment.

Yes, we supply material with a complete range of sizes. Our raw, peeled poles are excellently suited to businesses that produce specialised protective solutions for agriculture and road construction.

Depending on the specific soil conditions, we supply palisades after pressure impregnation (secured with chromium-free copper salts) as well as creosote palisades, which are intended for Great Britain and Ireland, among others.

Yes. Our flawlessly smooth, peeled wooden posts and untreated palisades form a perfect, standard-compliant raw material for further local chemical treatment.

Yes, we specialise in the reliable provision of large quantities. Thanks to our own extensive stock, we guarantee you seamless delivery continuity and absolutely smooth logistics - delivered either free to your premises (DAP) or directly to the destination port of your choice.

LoPro® is used to protect the ground-air zone of wooden poles. This area is regarded as particularly critical, as moisture, oxygen and soil-borne microorganisms can act on the wood simultaneously here.

Storage conditions for LoPro® bandages
The rolls must be protected from direct sunlight, frost and moisture. Storage must be carried out standing (upright) at an ambient temperature above +5 °C. If these conditions are met, optimal suitability for installation is guaranteed for up to 12 months.

Thanks to the LoPro® system, the wood preservation is better maintained in the particularly vulnerable area of the pole. This creates a preservative reservoir exactly where the pole is most heavily stressed by moisture and soil organisms.

Yes. We recommend ordering round wood poles with factory-preinstalled LoPro® bandages as initial-installation protection. Factory fitting saves valuable installation time on the construction site and guarantees an absolutely flawless application under optimal factory conditions.

We use exclusively pine wood from sustainable forestry. The careful selection of growing regions in Central and Northern Europe ensures narrow annual rings and a pronounced sapwood zone. These natural wood properties are the decisive factor for optimal and long-lasting impregnation saturation.

No, you do not have to. Our production is consistently designed for the “Plug & Play” format. We drill holes for fittings and screws, cut the pole tops to customer specifications and carry out all necessary millings directly at our works. You receive ready-to-install wooden poles that can be delivered directly and installed in the ground without further preparation.

Yes, this is easily possible. As an experienced palisade manufacturer and pole producer, we always keep debarked and white, peeled poles directly in stock. This is the ideal solution for external impregnation plants or for projects in which the impregnation is to be carried out flexibly and locally, directly at the installation site.

With our enquiry configurator you can choose a DAP delivery (to the construction site) or delivery to a specified port. The engineers at induo® immediately calculate the costs, taking into account the most favourable conditions and Incoterms.

Yes, absolutely. In addition to the European Union, our strategic core markets include in particular the British market as well as the Arab markets (North Africa and the Middle East). We have comprehensive expertise in international customs clearance and worldwide container transport, so that a smooth and legally secure delivery across all customs borders is guaranteed.

Of course. You can flexibly purchase our goods ex works and organise the entire logistics with your own means of transport. We adapt seamlessly to your existing supply chains and guarantee smooth provision and handling at our factory locations.

Effective and durable pressure impregnation can take place exclusively in the sapwood layer of the tree. The Central and Northern European pine that we carefully select is naturally characterised by a particularly wide and uniform sapwood zone, which enables deep and complete absorption of the preservative.

Spruce wood, on the other hand, has a completely different cell structure. Among experts it is considered resistant to impregnation, as it physically cannot absorb the preservative deeply enough. This makes pine the qualitatively superior choice for long-term ground installation.

The traditional full-cell process (also known as the Bethell process) first creates a vacuum, which completely draws the air out of the wood cells. As a result, the cells then fill completely with the preservative.

In the technologically leading Rüping process - a so-called empty-cell process - we begin by using controlled air overpressure to compress the air within the cells. Only afterwards is the creosote oil introduced. Once the pressure process is complete, the trapped air expands again and gently forces the excess oil out of the cell cavities.

The result: our wooden poles receive maximum deep protection within the cell walls, while the cavities remain free. As a result, the poles are optimally preserved, yet do not tend to bleed or drip during transport or storage.

At the end of their life cycle - which spans several decades - all chemically treated wooden poles must be sent for proper thermal recovery (energy recovery).

This means that, in accordance with statutory environmental regulations, the poles are safely disposed of in approved industrial or biomass heating power plants with modern flue gas cleaning and used for clean electricity and heat generation.