Fabricator and erector of custom structures for industrial, government and marine industries - Riggins Company For over forty years, Riggins Company has been fabricating and installing pressure vessels, heat exchangers, custom weldments and industrial piping systems. Furthermore, we offer every customer the highest standard of quality and safety for projects requiring an ASME Section VIII, Division 1 or Division 2 Certificate. We also meet requirements for TEMA, ABS, MIL-STD and AWS. DESIGN, FABRICATION, and INSTALLATION | SPECIALTY WELDING | SPECIALTY FABRICATION SHELL & TUBE HEAT EXCHANGERS