Cross section model

NKI Neede BV can supply PE double-walled SPIRO tube in the size DN 300 to DN 2600 and in the Pressure Classes SN 2 and SN directly from stock. Standard length 12.5 m. Other lengths can be delivered on request. Range of products

NKI manufactures on the basis of this tube:

• Double-walled underground PE tanks
• Double-walled above-ground PE tanks
• Silos
• Collection tanks
• Liquid tanks
• Swimming baths and ponds
• Inspection pits
• Pump pits
• Monitoring pits
• Drainage pits

Obtain more information about the advantages and the many possibilities that we can offer through this product.

Culvert pipe under a railway line.

Renovation of a concrete drainpipe

Installation of drainage pipes including inspection shafts

Laboratory test:


raw material inspection

ISO top test pressure

Tensile test set-up
Final inspection

Storage and transport
Storage tanks
Inspection shaft | Culvert pipe