Speed Concrete Industries (SCI) manufactures a wide range of precast reinforce concrete products. The Precast Caisson Rings sinking system with chamber rings is a widely used system. SCI Precast Caisson Rings are reinforced designed for sinking, as the shaft structure is best used with the sinking method which progressively sunk on its own weight or with the aid of hydraulic jacking in a controlled manner, usually from the surface till the predetermined depth. As a full set, SCI Precast Caisson Rings are coupled with a Precast Caisson Cover Slab to be assembled for traffic access.

SCI offers a wide range of high-quality precast caisson chamber rings ranging size of diameter 1800 mm to 4200mm. The caisson chamber starter rings can be manufactured with metal cutting shoe upon request.