Viraj Engineering is an engineering company that specializes in thermo-weld piping systems made of polymers like HDPE, PPRC, and PBT. They have experience with retrofitting industrial piping systems, replacing metal pipes with more corrosion-resistant and lower-maintenance polymer pipes. They offer turnkey piping projects as well as annual maintenance contracts. They have experience with piping systems for cooling water, compressed air, acid regeneration plants, and effluent treatment plants.