For our box girder fabrication, we strictly follow AWS D1.5 – the AASHTO/AWS Bridge Welding Code. All welding procedures are fully qualified, our welders are certified, and every full-penetration groove weld is executed with tight parameter control to ensure structural integrity.
We work with weathering steel to ASTM A709, which provides excellent corrosion resistance and allows for durable, low-maintenance bridge structures.
Our quality assurance goes beyond visual inspection. Every critical weld on the box girders undergoes Ultrasonic Testing (UT) per AWS D1.5 acceptance criteria, ensuring timely detection of any internal discontinuities.
From material traceability to final dimensional checks, our quality system ensures that every box girder leaving our shop meets the most demanding specifications. Hangzhou FAMOUS Steel Engineering – precision, standards, and trust in every box girder we build.
