- KLAD L.L.P. is a supplier of high quality clad piping components and prefabricated piping systems for solving corrosion problem in: Power, Refining, Oil & Gas Production, Chemical Process Industry, Environmental & Others! Our integrated supply of clad piping, clad fittings, clad flanges and prefabricated clad piping spools provides for a cost-effective and practical material option for ...www.clad.com