About Us

This year we are celebrating our 45th year of being in business.

Because of our location in Tulsa,the "heat exchanger capitol", most of our engineering and software services are heat exchanger related. In addition to thermal design we can evaluate vendor's quotes or evaluate existing heat exchangers in a new service.The following types of equipment can be designed or evaluated: shell-and-tube, air coolers, double pipe and waste heat units. The shell-and-tube and air cooler software have their beginnings and copyrights in 1964. It is estimated that nearly 100,000 heat exchangers have been designed with the Gulley software. The software is continually maintained and updated.

In addition to heat exchangers there are services and software for other Chemical Engineering applications.



(918) 744-0100· 2911 E. 77 Pl., Tulsa, OK 74136 · P.O. Box 700295, Tulsa, OK. 74170-0295