Class 1 & Class 2 Welding
A Class 1 weld is defined as a structural weld requiring the most stringent level of inspection. The determination of a Class 1 weld is the responsibility of the designer.
A Class 2 welder is a type of connection between two materials, usually made by a seal weld. The overlap area requires venting so trapped gases can escape.
Class 3 welds connect secondary members with lower stress.
Class 1 welds need the most inspection, while first-class welders need extensive experience and certification.
Welding Processes and Education
There are four main types of welding:
- MIG
- TIG
- Stick
- Flux-cored
Arc welding is the oldest of the four welding processes.
Welding Level 1 is an introduction to the basics of welding, including cutting metal. A coded welder has completed a Welder Approval Test in a specific welding configuration, demonstrating a welder’s skills to carry out work to industry standards.
To become a first-class welder, the average salary is $45,016 a year.
Rigs welders have advanced education and make mistakes rarely. Certifications show competency in different welding types.
Fitter welders shape and weld metals using heat and lasers, earning higher pay than average welders.
Certification and Safety
Certification demonstrates proficiency in expertise, normally verified by an inspector.
Each certification is specific to one weld type and position. Code numbers identify pipe and weld positions.
Inspections are divided into pre-weld, during, and post-weld stages.
The American Welding Society (AWS) offers online welding courses and customized programs to support welder education and certification.
Welders interpret blueprints and diagrams to determine the weld process.
Welding sparks are incandescent particles caused by the metal turning to molten, and weld spatter can be a hazard to both the welder and those working nearby.