Hammond General Contractors 1636 E Summer St Amex is an aggressive unionized prime mechanical contractor providing construction management, maintenance management and fab shop services to our clients utilizing skilled craftsman from the pipefitter, millwright, boilermaker and operating engineer trades. Hammond IN General Contractors Amex Construction Co www.amexconstruction.com mechanical contractor pipefitter union fabrication construction maintenance mechanical contractor pipefitter union fabrication construction maintenance Business Reviews Amex Construction Co Testimonials