The emphasis in the concrete pipe and manhole market is typically on high volumes, and the time to design and build moulds for non-standard products disrupts the production line.

Manufacturing once-off products is time consuming and would often require additional skills and supervision and is usually not profitable for these companies. We established Twinstar Precast after identifying this gap in the market.

Working with concrete requires special knowledge and skills and not all contractors have the necessary manpower and facilities to manufacture these kinds of products on site. With an aim to address precast problems in the civil construction environment in an affordable and timely manner, we will manufacture any precast concrete product to your design and need.

We typically manufacture precast concrete products which are not already available on the market, as well as once-off items, and can produce products ranging in weight from 20kg up to 6 tons. We manufacture most of our own moulds, and offer a mould manufacturing service in steel, fibre glass or polyurethane, depending on the weight and design of your concrete product.

We are solutions driven, and with 25 years of experience in concrete and the precast industry, we understand that every site has its own challenges and needs, and each project has unique problems and requirements. We can assist with those non-standard products to finish your contract no matter the size, quantity or complexity.

We manufacture square concrete manholes and manhole slabs, in various heights and sizes, according to customers’ needs, as well as polymer manhole stormwater grids and lids.

We do junction Box slabs in any shape and size as well as Field Inlet slabs and grid inlets.

We also offer standard stormwater channels and kerb inlet slabs and frames, including precast v-drains and taper chute channels.

The risk of theft of steel and cast-iron components continues to rise. As a result, we recently began to manufacture polymer products which contain no metal components.

By eliminating metal with our polymer manhole lids and frames, as well as stormwater gratings, we reduce thefts and therefore the safety risk associated with open manholes, as well as the cost implications of replacing manhole covers.
We offer both medium and heavy duty solutions with our polymer products, in line with the SANS 1882:2003 specification, and these components can be bought as loose items or cast into the required precast concrete slabs.