Profile: Sunex Engineering Company is a manufacturer of tube expanders, torque multipliers, torque wrenches, impact sockets and hex bit sockets. We also offer tube removal tools, tube installation tools, tube cleaners, and accessories for manufacturing boiler and heat exchangers. Our boiler tube expander series 114 is equipped with four expanding rolls and two flaring rolls that are overlapped to prevent ridging. These tools can expand and flare in one operation. They are ideal for water tube boilers, fire tube boilers, economizers, and air heaters.