Denys S.A./NV    



Industrieweg 124

Wondelgem, B-9032


32 09 254 01 11

32 09 226 77 71

Company description

Construction: Denys is a multi-specialist construction group operating in five divisions: cables and pipelines; tunnelling; buildings and civil engineering; collectors and water pipes; and special techniques. Activities of the pipelines and cables division include onstruction and installation of all types of liquid and gas pipes for conveying natural gas, industrial gases, plus chemical and petrochemical products, of industrial fire-fighting pipes, industrial pipes plus measuring and control stations, high and low-voltage cables and of telecommunication cables. The tunnelling division is involved in general tunnel constructions, thrust-boring of pipes, microtunnelling, horizontal drilling and vertical sinking of shafts. The buildings and civil engineering division constructs buildings, civil engineering structures, waste-water purification plants, drinking-water production installations, water towers and reservoirs and pump stations. Activities of the collectors and water pipes include construction of waste-water collectors, sewer systems, drinking and untreated water systems for the conveyance, production and distribution of drinking water, cooling pipes for nuclear power stations, traditional power stations and combined power stations and of hot-water pipes for district heating systems. The special techniques division is involved in jet-grouting, underpinning, soil stabilisation, restoration and renovation of buildings and monuments, repairing structures in tunnels, sewer relining and repairs, landfill sealing and dump redevelopment, rail track work and in the installation and application of sound barriers, tunnel linings, bridge and tunnel joints, surface renovation and construction of foundations

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Industry information

NAICS codes 
North American Industry Classification System (NAICS) codes are used to classify businesses for the purpose of collecting statistical data related to the U.S. economy. NAICS codes have been assigned to international companies to help organize all companies by type of activity.  

Primary: 237110 - Water and Sewer Line and Related Structures Construction

237310 - Highway, Street, and Bridge Construction

237990 - Other Heavy and Civil Engineering Construction


SIC codes 
Standard Industrial Classification (SIC) codes classify establishments by their primary type of activity. SIC codes are a U.S. Census Bureau system but can apply to international companies.  

Primary: 1623 - Water, Sewer, Pipeline, and Communications and Power Line Construction industry report

1622 - Bridge, Tunnel, and Elevated Highway Construction industry report

1629 - Heavy Construction, NEC industry report