L&L Special Furnace Co., Inc. has a longstanding reputation for designing special industrial furnaces, ovens, kilns, quench tanks and heat treating systems. Over these decades of design, production and service, L&L has manufactured some of the best heat treating furnaces, ovens and quenching equipment for the industrial and laboratory world. L&L continually updates its product offerings and improves quality. Our reputation for sophisticated engineering, superior workmanship and professional service has resulted in an extensive and growing base of satisfied customers, including many large and exacting clients.