Hayes is a 597 shop and I've not heard of Steinbacher. Hayes is a mechanical contractor that specializes in commercial and industrial boilers. My shop is a mechanical contractor that uses pipefitters and tin knockers, for service and construction. You name it, we do it. Are you looking for a non union mechanical contractor? or process piping? Plumbing? HVAC/R? I am not aware that there is a "pipe fitting" company.