Heavy Welding & Fabrication

With a 60 ton rigging and lifting capacity, Unico Mechanical offers heavy welding and fabrication services to meet the most large-scale requirements. We offer X-ray certified welding, and can work with material up to 6" thick for Welding operations.

Welding processes with which we are experienced include:

MIG and TIG/GMAW and GTAW
Submerged arc welding (SAW)

Spray welding
Orbital welding

Were pair parts including piping, structural beams, pressure vessels, hear exchangers, pump bases, platforms as well as many others. Unico can weld dissimilar metals, seam welding, hard face, narrow groove, and strip pieces. Some of the metals that we work with include aluminum, cast iron, stainless steel, and copper, as well as most alloys, Hastelloy, Monel, and titanium. Unico Mechanical also can provide a variety of additional services besides the actual welding of your parts: research and development, prototyping, engineering, and assembly. Contact us with the details of your project for more information.

Request Quote

Hydro Welding

Broach Welding

Heavy Welding Process

Heavy Scale Welding

Finished Welding

Welding Services

Welding on a Large Butterfly Valve in Alameda

Welding & Fabrication

Heavy Welding & Fabrication Highlights

General Capabilities	Contract Production Large Parts Weld Repair Weld Overlays Hardfacing Pressure Vessels
Arc/Resistance Welding Process	FCAW (Flux Core Arc Welding) This process uses similar equipment as GMAW but in place of standard solid wire uses wire consisting of a steel electrode surrounding a powder fill material. GMAW (Gas Metal Arc Welding) Also known as metal inert gas or MIG welding. GTAW (Gas Tungsten Arc Welding) Also known as Tungsten Inert Gas (TIG) welding. This process uses a nonconsumable tungsten electrode, an inert gas and a separate filler material. This process is sometimes mistakenly referred to as Heliarc welding. MIG Metal Inert Gas welding, also referred to as Gas Metal Arc Welding. Orbital Also known as Tube Arc Welding, this process is used for the circumferential welding of tubes, pipes and round stock. SMAW (Shielded Metal Arc Welding) Also known as Manual Metal Arc Welding or Stick welding. This process uses a consumable electrode rod, which as the filler material, is covered in flux and protects the weld area from oxidation and contamination. Spray Spray welding is a process where weld material is sprayed onto a workpiece. This process can be used to apply wear and heat resistance coatings and to build up worn areas. Submerged Arc Submerged Arc Welding (SAW) is a welding process in which the arc is struck beneath a layer of flux which increases arc quality and blocks atmospheric contaminants. TIG Tungsten Inert Gas welding. Also referred to as Gas Tungsten Arc Welding.
Material	Aluminum Cast Iron Copper Exotic Alloys Hastelloy® Metal Monel® Nickel Stainless Steel Titanium Carbon Steel
Welding Operation	Free Hand on material Up to 6" Thick
Additional Services	Assemblies Engineering On-Site/ Field/ Mobile Prototype Research and Development Repair Work Replacement Parts Overlays
Intended Application	Pressure Vessels Cladding/Overlay Dissimilar Metals Piping Hard Face Precision Assembly Seam Welded Tube Structural Strip Repairs Tubular Frame
Industry Focus	Power Generation Refineries Municipalities Ship Repair Waterfront Repair Water Treatment Manufacturing Aerospace Military Agricultural Pulp & Paper Medical Construction Roofing
Certification	American Welding Society (AWS) National Board of Pressure Vessels ASME Section 8

Print This Page

Email This Page