Steel Welding Techniques Explained: MIG vs TIG
When it comes to steel fabrication, welding is at the heart of it all — and two of the most widely used techniques are MIG and TIG welding. Understanding the difference is essential, especially if you’re commissioning large-scale fabrication work where quality, speed and cost efficiency all matter.
What is MIG Welding?
MIG (Metal Inert Gas) welding is a process where a continuous wire electrode is fed through a welding gun, melting into the joint to create a strong bond. It uses a shielding gas to protect the weld from contamination.
Why MIG is Ideal for Steel Fabrication
Speed and efficiency: MIG is fast, making it perfect for large projects and high-volume runs.
Consistent quality: Excellent for repeatable welds with minimal clean-up.
Strong performance on mild steel: Particularly well-suited for structural work, frames, and general steel fabrication.
Lower labour cost: Because of the faster process and ease of use, it's more economical for bulk work.
What is TIG Welding?
TIG (Tungsten Inert Gas) welding uses a non-consumable tungsten electrode and typically requires more skill and precision. A separate filler rod is manually fed into the weld, giving the operator greater control over the outcome.
TIG Welding: When Precision is Key
Clean, detailed finish: Ideal for visible joints or delicate applications.
Higher skill requirement: Slower but incredibly precise, often used in decorative or specialist steelwork.
Strong but time-intensive: Excellent strength-to-weight ratio, but best for smaller, more intricate jobs.
MIG vs TIG: Which Should You Choose?
FeatureMIG WeldingTIG WeldingSpeedFast – ideal for large runsSlower – better for small-scaleSkill requirementModerateHighCost-efficiencyMore economicalMore labour-intensiveFinish qualityGood, less refinedExcellent, clean aestheticBest forStructural steel, framesDecorative work, fine joints
Why We Focus on MIG Welding
At Bespoke3, we specialise in MIG welding for steel fabrication projects of all shapes and sizes. Why? Because MIG welding delivers the reliability, strength and turnaround speed required by industrial clients across construction, infrastructure, and manufacturing.
We work exclusively with steel — from mild steel to stainless — and our experienced welders are trained to deliver precision results, even on demanding specs.
Whether you need high-volume brackets, large structural frames, or bespoke steel assemblies, our MIG welding expertise ensures consistent quality and durability every time.
FAQs
What types of steel can be MIG welded?
MIG welding works particularly well with mild steel, though it’s also suitable for stainless and some alloy steels with the right wire and shielding gas.
Is TIG welding stronger than MIG?
Both produce strong welds, but TIG offers slightly more control over the weld pool, making it ideal for thinner or more precise joints. For most structural applications, MIG provides ample strength.
Can MIG welding be used for outdoor fabrication?
Yes, but additional precautions are needed due to shielding gas sensitivity. Flux-cored MIG wire is often used for outdoor jobs where wind may be an issue.
How do you ensure weld quality at scale?
Our team follows strict quality control protocols, with visual inspection, non-destructive testing (where required), and continuous operator training to ensure each weld meets spec.