Hallmark Industrial Supply is a manufacturer specializing in large diameter fabricated steel and stainless steel piping systems and pressure vessels. They offer a range of services including ASME Pressure Vessel Fabrication, Fabricated Pipe Fittings, AWWA and ASME Pipe Fabrication, Flexible Coupling and Adapters, and Cement Mortar and Lining Coupling with various coatings. The company upholds ASME and AWWA standards to ensure efficient processes and high-quality products. With in-house lining, painting, and coating services, Hallmark Industrial Supply distinguishes itself through dynamic fabrication and state-of-the-art manufacturing methods. Their outstanding leadership, industry expertise, and innovative design capabilities have earned them recognition and awards in the pipe fabrication industry.