PSI is a full service fabrication, welding, and machine shop, as well as a field maintenance service company. PSI field Services specializes in precision mechanical maintenance and high alloy welding. We are certified to work in facilities across the US and available 24/7/365 to help get you back up and running. Our projects include maintenance, construction, structural, piping, civil, equipment setting, and rebuilds. PSI also provides on-site crews for scheduled or emergency shutdowns and outages. Our clients know the quality and value of Pulpmill Services Inc.