Contract Manufacturing & Assembly

Precision Parts Manufacturing & Mechanical Assembly

River City Welding LLC provides contract manufacturing, precision metal fabrication, and assembly services for OEMs, manufacturers, industrial suppliers, and commercial equipment companies throughout the Greater St. Louis Metro area. Whether you need prototype production, short-run manufacturing, or ongoing production support, we deliver consistent quality, dependable lead times, and scalable manufacturing solutions.

Our team partners with companies that need a reliable manufacturing resource capable of fabricating, welding, assembling, and finishing components to customer specifications. From individual parts to fully assembled products, we become an extension of your production operation.

Manufacturing Services

We provide complete manufacturing support, including:

• Production welding

• Mechanical assembly

• Metal fabrication

• Component manufacturing

• Fixture and jig fabrication

• Prototype development

• Low-volume production

• High-volume production

• Product modifications

• Welded assemblies

• Steel, stainless steel, and aluminum fabrication

• Precision drilling, cutting, and forming

• Hardware installation

• Quality inspection

• Packaging and shipment preparation

Whether you're outsourcing overflow production or launching a new product, we can manufacture components that meet your specifications and production schedule.

Production Assembly

River City Welding LLC specializes in repetitive manufacturing and assembly processes designed for consistency and efficiency. We assemble fabricated steel components, industrial equipment, structural assemblies, welded frames, brackets, housings, fixtures, and custom mechanical products for commercial and industrial applications.

We work directly from customer drawings, CAD files, samples, or engineering specifications while maintaining tight quality control throughout every stage of production.

Industries We Serve

Our manufacturing and assembly services support:

• OEM Manufacturers

• Aerospace Suppliers

• Automotive Suppliers

• Construction Equipment Manufacturers

• Industrial Equipment Companies

• Material Handling Equipment

• Agricultural Equipment

• Defense Contractors

• Machine Shops

• Commercial Product Manufacturers

• Warehousing & Distribution

• General Contractors

Why Choose River City Welding

River City Welding combines fabrication expertise with production efficiency to deliver dependable manufacturing support. Whether you require 50 parts or 50,000 assemblies annually, we focus on quality, repeatability, on-time delivery, and responsive communication. Our team can integrate into your existing supply chain while helping reduce production bottlenecks and increase manufacturing capacity.

Service Area

River City Welding LLC proudly provides contract manufacturing and assembly services throughout the Greater St. Louis Metro area, serving St. Charles, St. Peters, O'Fallon, Wentzville, Chesterfield, Maryland Heights, Bridgeton, St. Louis, and surrounding communities across St. Charles County, St. Louis County, Jefferson County, and Franklin County.

Request a Quote

Need a dependable manufacturing partner? Contact River City Welding LLC today to discuss your production requirements. Whether you need prototype fabrication, ongoing production, welded assemblies, or complete contract manufacturing services, we're ready to help your business increase capacity while maintaining quality and on-time delivery.