Specialty Welding Services LLC, a leading provider of specialized welding services, is a pre-qualified industrial welding, pipefitting, and mechanical contracting company serving the St. Louis region, Missouri, and clients nationwide. We specialize in food and beverage, dairy, pharmaceutical, chemical processing, manufacturing, cold storage, industrial refrigeration, and data center facilities.
Our offerings include food grade hygienic (sanitary) stainless, process piping, orbital welding, ASME code piping, temporary manpower, structural fabrication, equipment installation, plant shutdown support, and 24/7 emergency mobile welding response. At SWS, we can work from our own field measurements or engineered blueprints, isometric drawings, and P&IDs, bringing our expertise in process skid fabrication and onsite installation.
As an AWS and ASME certified company, we ensure OSHA compliance and are pre-qualified through ISNetworld, Avetta, and other contractor compliance programs — holding $2M general liability, $1M commercial auto, $1M workers compensation, and $5M excess umbrella insurance.
Known for our fast emergency response and precision workmanship, we at SWS Welding are committed to plant reliability and safety, making us the trusted contractor for industrial facilities and general contractors both locally and nationwide.
SWS maintains active prequalification status through ISNetworld, Avetta, SAP Ariba, and additional owner and contractor compliance platforms, and is prequalified with major general contractors including Clayco, Gray Construction, and Stellar Group.
SWS Industrial carries $2M general liability, $1M commercial auto, $1M workers compensation, and $5M excess umbrella insurance, meeting the requirements needed for most industrial facilities and national general contractors.
SWS Industrial offers specialized welding services and holds ASME Section IX and AWS D1.1 welding certifications, along with OSHA certifications. Our SWS welders are also certified in equipment operation, including forklift, boom lift, and scissor lift, supported by hundreds of hours of onsite safety training.
SWS is an active registered federal contractor — UEI DNSXD1SZNLV9, CAGE 20FR7, SAM.gov status Active for all awards through May 2027. Registered under NAICS 238220, 332996, 811310, 238990, 332313, 332312, and 236210 as a small business. Available for prime contracts, subcontracts, and teaming with primes on federal, state, and municipal industrial projects.