MIG vs TIG vs submerged arc welding: choosing the right process for structural steelwork

Every fabrication shop eventually faces the same question on the shop floor: which welding process should carry the load on this job? The three contenders for structural steelwork — MIG (GMAW), TIG (GTAW) and submerged arc welding (SAW) — are not interchangeable tools in a toolbox. They represent three different trade-offs between speed, quality and cost, and choosing the wrong …

Non-destructive testing (NDT) in structural steelwork: ensuring weld integrity and quality

The massive steel skeletons that define our modern cities—spanning wide rivers as highway bridges or reaching high into the clouds as office towers—rely entirely on the integrity of their connections. Every beam, column, and truss must transfer tremendous structural forces safely down to the foundation. When thousands of tonnes of static and dynamic loads press down on these joints, the …

Specifying structural steelwork: quality control from design to protective coating

The durability, safety, and architectural integrity of modern commercial buildings depend heavily on the quality of their underlying steel skeletons. In the United Kingdom, where weather conditions can be highly volatile and architectural designs are increasingly complex, specifying structural steelwork is a task that leaves no room for approximation. From the initial layout in the drafting office to the final …