Concrete weight pipe coating

Concrete weight pipe coating equipment
Specifications taken into account when designing the concrete weight pipe coating equipment are API 5L 44th Edition, BS-1881, BS-12, BS 4027, ASTM C150, BS-882, ASTM C33, DNV-OS-F101/2000.

Impingement or wrap coating
An impingement concrete weight coating plant applies concrete using high-speed rollers that spray the mix onto the rotating pipe surface as it passes the station. In a compression coating plant, the pipe moves helically past an applicator belt that presses the concrete and wire mesh layers onto the pipe wall, after which rotating belt heads carry it forward. Bauhuis has introduced several innovations to improve impingement plant efficiency, including a continuous coating carrousel, an automatic wire mesh applicator, and a reclaim system that reduces spillage and overspray.

Concrete batch plant
To produce the concrete weight coating mix with the correct density, iron ore, sand, cement, and water are blended in batch plants supplied with the coating system. These plants include cement silos, sieving and weighing bunkers, transport belts, and heavy-duty mixers. The finished mix is discharged into the hopper before the application head. Reclaim systems enable reuse of overspray, maximizing plant efficiency.

Reinforcement types
All concrete weight coatings require reinforcement, using either steel cages (for impingement systems), steel wire mesh, or a combination. The number of mesh layers depends on the final coating thickness up to 200 mm and the required reinforcement percentage.