Duolingo Construction (Pty) Ltd Specialises in HDPE Pipe Installations, HPDE Fittings, Butt Welding, HDPE Plastic Pipe Welding 25mm up to 630mm, Pipeline Supply and Installation as well as Installation of HDPE and LLPDE Geomembrane Dam Linings.

Duolingo Construction (Pty) Ltd was originally founded in 2010 by Marina Fourie and Sindy Ahrend. In 2012 the company secured a B-BBEE rating level 2.

We operate in the following sectors:






In these sectors we specialize in:

Butt Welding (HDPE, PP) from 25mm – 630mm diameter

Supply and install Galvanized, HDPE, PP, UPVC, PVC, pipes and fittings

Extrusion Welding

Wedge Welding of all HDPE and LLPDE geomembrane dam linings from 1-3mm

Mechanical Maintenance

Electrical Maintenance

Steel Fabrication

Air Conditioning

Projects Completed:

N12 – Civil Works

Omnia Fertilizer Dryden, Hectorspruit, Groblersdal

Install New Slutty Dams at Middelburg Ferrochrome Samancor

Install Waterlines for the Qwaqwa water supply project

Install Waterlines at the Garies water supply project

Building of new plant at Blyboor Gold Mine 5 Shaft, Carletonville

Install new HDPE lines for paper factory

Repair Municipal sewer and water lines

Our client list includes:

Basil Read

GP Control Valves

Gears Mining

BME Dryden

Omnia Group

Gears Mining

Heijo Trans

Entra Paper

CRM International


Mshandukani Holdings


Steffanutti Stocks Middelburg

Benoryn Investments Holdings

Triangle Services


We are able to provide copies of the following certificates / documents upon request:

CIPC Registration

B-BBEE Certificate

SARS Tax Clearance Certificate

Department of Labour – Letter of Good Standing

Our Mission

We endeavour to be considered a trusted and valuable company, committed to providing our customers with the best possible service.