Bridges and Steel Structures
Weathering steel bridges are built to be left unpainted, which means the weld metal has to weather like the parent plate. Structural work adds fatigue loading and thick, restrained joints.
Pain points
What Makes Consumable Selection Hard Here
- Atmospheric corrosion resistance in the weld metal to match Q355NH, Q420NH and Q460NH plate
- Colour and patina matching between weld and parent metal on exposed structures
- Fatigue performance at welded details carrying cyclic traffic load
- Low temperature toughness for bridges in cold climates
Recommended grades
Consumables We Supply for This Work
A starting shortlist. Confirm against your base metal and code before you qualify a procedure.
Related Specification Ranges
Technical Reading
Background written for engineers working in this field.
Bridges and Steel Structures Questions
Which AKWELD grades are used in bridges and steel structures?
Grades such as AK-50QNH, AK-55QNH, AK-60QNH are the usual starting point. The exact choice depends on the base metal, the code and the service temperature.
Do you supply the data our inspector will ask for?
Each grade page publishes the classifications and chemical composition, plus mechanical properties where the factory datasheet gives them. Ask us for the test record for a specific batch.
Can you help with consumable selection for a specific project?
Yes. Send the base metal, the welding process, the position, the service temperature and the code, and our technical team will shortlist the grades that match.
What quantities do you supply for project work?
Project quantities are quoted against the schedule you send. Trial quantities are available first so the grade can be qualified on your own procedure.
Working on a Bridges and Steel Structures Project?
Send the base metal, the code and the schedule. We will shortlist the grades and send the data your welding engineer needs.