How is welding quality controlled in steel structure construction projects?

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 In Southeast Asian climates where moisture and heat pose welding challenges, maintaining steel structure weld quality is vital to structural safety.

Welding Quality Control Techniques:

Standardized Welding Procedure Specifications (WPS):

Ensure all site and factory welders follow AWS D1.1 or ISO 9606 protocols.

Non-Destructive Testing (NDT):

Ultrasonic Testing (UT): Detects sub-surface flaws

Magnetic Particle Testing (MT): Reveals cracks on nodes

Visual Inspection (VT): Ensures weld bead quality and alignment

Environmental Controls:

Use welding tents and humidity control on site

Post-weld heat treatment if required for thick nodes or critical connections

Data-Driven QA:

Maintain weld logs, inspection reports, and digital tracking via BIM for full traceability — increasingly common in Singapore and Thai infrastructure projects.

 Need a sample welding quality checklist used in a real airport terminal project? I’m happy to share.

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