When did hajoca corporation start? About Us. In 1858, one enterprising inpidual invested his life savings of $200 to start a business grinding key stops for plumbers in Philadelphia. More than 150 continuous years of service later, that business is known as Hajoca Corporation. Hajoca has a robust history of helping to shape advances in plumbing.Who is hajoca plumbing? One of the nation's leading plumbing and heating wholesalers, Hajoca operates across the US, particularly California, Florida, Pennsylvania, and Texas. Hajoca wholesales plumbing, HVAC, swimming pool, and industrial supplies for commercial and residential customers.Is hajoca in raleigh nc? Hajoca – Raleigh Residential is part of Hajoca Corporation, a nationwide wholesale distributor of pipe, valves, fittings, plumbing, heating, and industrial supplies. Our location here in Raleigh, NC is proud to serve the residential and new home plumbing markets in the Triangle.Why choose hajoca jacksonville? As the premier wholesale distributor for plumbing, industrial, septic, and fire protection fabrication supplies, HAJOCA – Jacksonville has a solid commitment to excellence in customer service, quality of our work, and quality of our people, which is what sets us apart from the competition.