Heavy fabrication refers to the manufacturing process involving the shaping, welding, machining, and assembly of large-scale and high-strength metal components. It is a critical function across industries such as construction, power, oil & gas, mining, shipbuilding, railways, and heavy engineering. 

What is Heavy Fabrication? 

Heavy fabrication involves working with thick metal plates, large sections, and complex assemblies that require high precision, specialized equipment, and skilled craftsmanship. Components fabricated under this category typically form the core structural or mechanical parts of large projects — such as bridges, industrial buildings, power plant supports, pressure vessels, cranes, and heavy machinery frames. 

Capabilities and Processes 

Key processes involved in heavy fabrication include: 

Cutting and Profiling: Plasma, oxy-fuel, or laser cutting of heavy plates 

Welding: Advanced MIG, TIG, and submerged arc welding techniques 

Forming and Bending: Using hydraulic presses and rollers to shape large sections 

Machining: CNC and conventional machining for achieving tight tolerances 

Assembly and Fit-up: Assembling large components and modules 

Surface Treatment: Sandblasting, painting, or galvanizing for durability 

Advantages of Heavy Fabrication 

Strength and Durability: Heavy-fabricated components are built to withstand extreme loads, stress, and environmental conditions. 

Customization: Allows for the production of bespoke designs and complex geometries to meet specific project requirements. 

Scalability: Suitable for both one-off large structures and repeat production for industrial applications. 

Integration: Facilitates pre-assembly of structural modules, reducing on-site construction time and costs. 

Typical Applications 

Steel bridges and flyovers 

Structural frameworks for high-rise or industrial buildings 

Heavy-duty platforms, conveyors, and pipe racks 

Boiler structures and pressure vessels 

Mining and material handling equipment 

Offshore and marine structures