What Welders Do
Welcome
Hello, and welcome. This is Super Structures General Contractors — a national general contractor headquartered in Powhatan, Virginia — here to help you and your clients build something that lasts. We're glad you're with us, and we look forward to connecting with you.
Alright, What Welders Do. Don't let the plain title fool you. Here's the part that actually matters on the job: Welders fuse metal to build and repair the structures everything else depends on — and the trade runs from field work on a steel frame to precision shop fabrication. Learn it well and you'll understand why a good welder is never out of work.
Welding joins metal by melting the base metals together, usually with a filler metal, so they solidify as one piece. Unlike bolting or riveting, a sound weld makes the joint as strong as the surrounding material.
Where welders work
- Structural steel — columns, beams, connections, and stairs on buildings and bridges, often in the field, often at height.
- Pipe and pipeline — process piping, pipelines, and plant work where every joint is tested; among the highest-paid welding.
- Fabrication shops — building assemblies, tanks, frames, and equipment indoors under controlled conditions.
- Manufacturing — production welding, often with semi-automatic or robotic equipment.
- Repair and maintenance — heavy equipment, trucks, farm and mining equipment, plant maintenance.
- Specialties — shipbuilding, aerospace, underwater welding, and rail.
A day in the trade
Read the drawing and the welding symbol for each joint, confirm the welding procedure specification (WPS) that tells you the process and settings, prepare and fit the joint, set up the machine, weld, clean and inspect the weld, and repair anything that doesn't pass. On structural and pipe work an inspector checks the welds visually and often with ultrasonic or radiographic testing.
The skills
Steady hands and good eyes; reading drawings and symbols; understanding metals and how heat moves through them; fit-up and layout with measuring tools; grinding, cutting, and beveling; and the discipline to follow a procedure exactly.
Going Deeper (Intermediate)
Welding is one trade with many positions: flat, horizontal, vertical, and overhead on plate, and the 1G through 6G positions on pipe. Each position is harder than the last, and a welder's certifications say which positions they've proven. A 6G pipe certification (pipe fixed at 45 degrees) is the test that opens the door to pipeline and plant work.
Welding sits inside a larger family of joining and cutting skills: oxy-fuel and plasma cutting, carbon-arc gouging, brazing, and thermal spraying. Most welders cut and gouge as much as they weld.
Advanced / Pro-Level
Pros understand the metallurgy: how heat input, cooling rate, and filler selection affect strength, hardness, and cracking in carbon steel, stainless, and aluminum; why preheat and interpass temperature matter on thick sections; and how distortion is controlled with sequence and fixturing. They read the codes — AWS D1.1 for structural steel, ASME Section IX and B31.3 for pressure piping, API 1104 for pipelines — because those codes define what a sound weld is on their job.
From the contractor's side, welders on a structural job are working to the structural engineer's drawings and the fabricator's shop drawings, and the special inspector's reports go into the project record. A GC should know which welds require inspection and when the inspector must be on site.
Practice Challenge
A steel erector's welder is about to weld a moment connection in the field on a commercial building. Name three things that should exist before the arc strikes. (Answer: an approved WPS for that joint and process, a welder qualified to that WPS and position with a current certification record, and the special inspection scheduled per the structural drawings and the building department's requirements — plus fire watch and hot-work permit on the site.)
In Practice
A contractor who knows the difference between a shop welder and a certified field welder with a 3G/4G structural ticket hires the right person for the connection. A contractor who doesn't finds out at the inspection.
Common Mistakes to Avoid
- Assuming "a welder is a welder" — positions, processes, and certifications differ
- Welding structural connections without a WPS or a qualified welder
- Skipping joint prep and fit-up, which cause most weld defects
- Forgetting the inspection schedule until the inspector is already late
Takeaway: Welders fuse metal to build and repair the structures everything else depends on — and the trade runs from field work on a steel frame to precision shop fabrication.
Educational overview only — not hands-on welding instruction, a safety program, or a substitute for training under a qualified welder. Follow OSHA, ANSI Z49.1, your employer's procedures, and the applicable welding code for your work.