Precision Engineering Meets Uncompromising Quality

 At NJ Sullivan, we combine over 50 years of metal fabrication expertise with state-of-the-art technology to deliver precision-engineered solutions for the most demanding applications. Our comprehensive capabilities include custom electrical enclosures, precision machining, advanced welding, sheet metal fabrication, and premium finishing services — all backed by rigorous quality control and a deep commitment to exceeding our clients’ expectations across industries from data centers to energy infrastructure and beyond.