Finally a welding and fabrication contractor you can count on! Certified WeldersHWI has certified welders to ensure quality fabrication and repairs at competitive prices. Project OrientedCurrent projects include class one and short line railroads, as well as private contracting. Exceptional ServiceWe provide service on all ballast regulator components and on all models of regulators. Contact us today for price quotes on repairing your component, or to check on exchange availability.