Steel Tank Repair
Steel Riser Pipe Repair
PCCP
Industrial Chimney Stacks

Steel Tank Repair
HJ3’s carbon fiber composite systems can be used to repair large steel tanks used for storage or processing of aggressive chemicals.  These repairs are completed without the need for welding. HJ3's high strength composite systems are capable of restoring the tensile strength of corroded and deteriorating steel tank walls suffering from exposure to aggressive acidic or alkaline chemicals.  HJ3 composite systems also provide chemical protection and have been tested to withstand chemicals ranging from pH 1 to pH 13 in over 20,000 hours of continuous exposure. (back to top)

Steel Riser Pipe Repair
Corrosion of steel reduces pipe strength and service life. Normally, owners are forced to replace the damaged pipe, requiring extensive downtime, the use of heavy equipment and excavation.

HJ3 composites can structurally repair the damaged pipe. Installed internally or externally, HJ3 composite repair systems return the pipe to its original design strength without costly downtime, heavy equipment or excavation. (back to top)

PCCP
Large diameter Pre-stressed Concrete Cylinder Pipe is used to transfer pressurized water to cooling towers.  Over time, the pre-stressing wires used to contain internal pipe pressures corrode leaving the PCCP susceptible to blow-out.  HJ3’s carbon fiber composite systems can be installed on the internal pipe wall of the PCCP to create hoop strengthening to resist internal pipe pressures.  These repairs are made without having to excavate and replace the pipe creating considerable cost savings. (back to top)

Industrial Chimney Stacks
HJ3’s high strength composite materials are excellent repair systems for confining and strengthening large industrial chimney stacks.  Traditional steel banding, currently used to repair stacks, is cumbersome and expensive to install.  Additionally, these systems do not offer full confinement of the structure allowing falling debris.  HJ3 high strength composites can be designed to overcome seismic loads or deterioration of the stack. (back to top)