Quality Control

We know quality control is a process intended to ensure that product quality or performed service adheres to a defined set of criteria or meets the requirements of the client. Through the quality control process, the product quality will be maintained, and the manufacturing defects will be examined and refined.

Raw material quality control:

• Thickness tolerance re-check
• Yield point and tensile strength testing in-house
• Third party inspection are welcome
• Supply traceable mill certificate.

Structural steel fabrication quality control:

• 100% testing dimension tolerance <3mm.
• 20% sample welding line ultrasonic testing, no-fault, full penetration
• 20% magnetic powder testing, no bubble, no defect, Smooth and Full
• Supply third-party inspection assistance.

Anto-corrosion system quality control:

• Shot blasting to reach grade Sa. 2.5, surface metal luster, no rust, no oil dirt, no welding spatter, Roughness >75um.
• Apply primer paint within 4 hours after shot blasting, Holiday-free coatings, smooth, No dust, Dry Film Thickness (DFT) >75μm.

Pre-assembly testing the connection details:

For special-shaped steel structure components, we apply the pre-assembly test in the workshop before package and delivery.

Our quality control process is divided into several separate processes, pls. see our QC flow: