Welding is crucial in construction, manufacturing, automotive repair, and countless other industries. Whether you’re exploring welding as a hobby or considering it as a career path, understanding the different types of welding and when to use them can help you choose the proper technique for your goals.
In this blog post, we’ll walk you through the different types of welding, their key features, typical applications, and things to consider before diving in.
If you’re just getting started, Stratford Career Institute offers an introductory welding course to help you explore the basics and decide whether welding is the right path for you.
What Are the Different Types of Welding?
Each type of welding has its strengths, challenges, and best-use scenarios. Some are better suited for high-strength structural work, while others are great for fine detail or precision.
By understanding the various methods, you can choose the one that aligns best with your project needs or the type of welding job you’re interested in pursuing. Here are four different types of welding.
Type 1: Shielded Metal Arc Welding (SMAW) – Stick Welding
Shielded metal arc welding, also called stick welding, is one of the oldest and most widely used welding methods. It is also one of the least expensive types of welding.
In stick welding, an electric current passes through a “stick” (a coated metal electrode). As the stick melts, it fuses the metals, while the outer coating creates a protective gas shield around the weld. This shield helps keep the weld strong by blocking out air and moisture.
Stick welding can be used indoors and outdoors and works well on rusty or dirty materials. That’s why it’s commonly used in construction, repair work, and on farms or job sites where conditions aren’t perfect.
However, it can take some practice to get the hang of it. The welds may not look as smooth as other methods, and you’ll need to replace the stick fairly often.
Type 2: Gas Metal Arc Welding (GMAW) – MIG Welding
Gas metal arc welding, or MIG welding, is one of the easiest types of welding to learn, making it an excellent option for beginners. In MIG welding, a wire feeds continuously through a welding gun while a gas protects the weld from air.
The machine does most of the work for you, so you can focus on guiding the torch and making smooth welds.
MIG welding is common in auto body repair shops, manufacturing, and home workshops. The equipment tends to be more expensive than stick welding, and the shielding gas means it’s not ideal for outdoor use where wind can blow the gas away.
Type 3: Flux-Cored Arc Welding (FCAW)
Flux-cored arc welding, or FCAW, is similar to MIG welding but has one key difference: instead of needing a separate gas tank, the wire used in FCAW has a special flux in the center that creates its own shield during welding. That means you can weld outdoors without worrying about a gas shield getting blown away.
These qualities make FCAW a favorite for construction sites, shipbuilding, and other heavy-duty outdoor work. It’s also commonly used for thicker metals and high-production jobs where speed matters.
It works well outdoors, can weld dirty or rusty materials, and is relatively easy to learn. However, it can produce more smoke and splatter than MIG or TIG welding, and the finished welds often need more cleanup. It’s also not as precise, so it’s not ideal for projects that require a clean, polished look.
Type 4: Gas Tungsten Arc Welding (GTAW) – TIG Welding
TIG welding, also called gas tungsten arc welding (GTAW), is one of the most precise welding methods out there. It uses a special metal tip that doesn’t melt, and you add the welding material by hand using a separate rod.
TIG welding is often used in industries where clean, high-quality welds are critical, like aerospace, automotive, and bicycle manufacturing.
If you’re new to welding, TIG is usually not the best place to start, because it requires good hand coordination and careful control of heat and filler material. It’s also slower than other methods, and the equipment can be expensive.
Type 5: Submerged Arc Welding (SAW)
Submerged arc welding, or SAW, is a method primarily used for large industrial projects that require long, strong welds. Instead of seeing sparks and a bright arc as you do with stick or MIG welding, SAW works under a layer of loose, sand-like flux. This flux completely covers the weld area, which is why you don’t see the arc while the weld is happening. The flux melts and protects the weld, helping to create a smooth, high-quality finish with minimal splatter.
SAW is commonly used in factories, shipyards, and pipeline construction. These are places where thick metals and long welds are the norm.
For beginners, SAW is not usually the first method to learn. It requires heavy equipment and is mostly used in controlled indoor environments. While it often produces cleaner results than stick welding, its main limitation is that it doesn’t work well outdoors or on thin materials.
SAW is powerful and efficient for large projects. It is an industrial method, not beginner-friendly for home or small workshops.
Type 6: Plasma Arc Welding (PAW)
Plasma arc welding (PAW) is a precision welding technique similar to TIG welding but features a more focused and powerful arc. In this process, gas is heated until it becomes plasma, resulting in a concentrated arc that melts metal with accuracy for deep penetration and clean welds.
PAW is used in aerospace manufacturing, medical device production, and other industries needing tight tolerances. The equipment enables welders to regulate plasma flow, providing more control than many other welding processes. This makes PAW useful for both tiny, delicate welds and high-power applications with thick metals.
PAW can be more complex and expensive than TIG welding, which is typically practiced by experienced welders or in advanced manufacturing settings. For projects requiring smooth finishes, minimal distortion, and precise control, PAW delivers reliable performance.
Type 7: Oxy-Fuel Welding
Oxy-fuel welding, also known as oxy-acetylene welding, is among the oldest and most versatile techniques. It uses oxygen and fuel gases, often acetylene, to create a flame that melts metal. Filler metal can be added to join workpieces as needed.
This method is widely used for metal repair, cutting, brazing, and small fabrication projects. Because oxy-fuel equipment does not require electricity, it is particularly useful in remote locations or outdoor environments where power sources may be unavailable. It is also highly portable, making it a popular choice for field repairs and maintenance.
Oxy-fuel welding is slower than most modern arc welding methods and is not ideal for working with very thick metals or for high-precision work. However, it remains an important technique for welders to understand, especially for those interested in metal repair, artistry, or situations where portability is more important than speed.
Type 8: Resistance Spot Welding (RSW)
Resistance spot welding, or RSW, is a quick and straightforward method for joining two pieces of thin metal together. You’ll see it used most often in the auto manufacturing industry, as well as in metal cabinets, appliances, and other products made from sheet metal. Instead of using a flame or welding wire, RSW works by pressing the metal pieces between two copper electrodes. When the machine sends an electrical current through the metal, the heat created at that exact “spot” melts the metal and forms a strong weld once it cools.
RSW is popular because it produces fast, repeatable welds with minimal cleanup. It is perfect for situations where hundreds or even thousands of the same weld must be made quickly, such as in car body assembly lines. It also doesn’t require filler metal or shielding gas, which keeps the process simple.
RSW is typically associated with production environments because the equipment excels in high-volume work.
Type 9: Resistance Seam Welding (RSEW)
Resistance seam welding, or RSEW, is similar to spot welding but uses rotating wheel-shaped electrodes instead of fixed points. As the metal pieces pass between the wheels, continuous electrical current creates a series of overlapping welds that form a tight, leak-proof seam.
RSEW is ideal for products that require airtight or watertight seals, such as fuel tanks, radiators, pipes, and sealed metal containers, where even a small leak could cause major problems.
RSEW is highly automated, making it an excellent choice for production lines or repetitive manufacturing tasks that need consistent, reliable seams with minimal manual effort.
One thing to consider is that RSEW requires precise coordination between pressure, current, and travel speed. It is not as versatile as arc welding for structural work, but it excels when clean, uniform seams are essential.
Types of Welding Jobs and Salary
Welding offers a variety of career paths, each with different skill levels, work environments, and earning Welding offers a variety of career paths, each with different skill levels, work environments, and earning potential. The type of welding job you pursue may depend on your training, interests, and willingness to work in specific industries.
Here are a few common welding careers and their typical working environments:
- Construction Welder—construction sites, bridges, and pipelines;
- Manufacturing Welder—factories, assembly lines, and industrial facilities;
- Underwater Welder—offshore rigs, ships, and underwater pipelines;
- Pipe Welder—oil fields, gas plants, and municipal water systems; and
- Welding Inspector—manufacturing plants, construction sites, and fieldwork.
According to the U.S. Bureau of Labor Statistics, workers in the broader category of welders, cutters, solderers, and brazers earned a median annual wage of about $51,000 as of May 2024. Actual wages for welders can vary based on experience, certifications, location, and industry. Some specialized roles, like underwater welding or aerospace fabrication, may pay significantly more but also demand rigorous training and safety requirements.
Learn More About Different Types of Welding
Stratford Career Institute’s online Welding course is a convenient way to explore welding basics at your own pace. While Stratford does not provide certification or state-licensed training, this course can help you:
- Understand the fundamentals of various welding techniques,
- Learn basic safety practices and equipment use,
- Explore the different types of welding jobs, and
- Decide whether welding is the right career or hobby for you.
If you’re curious about how to learn welding and want a flexible, affordable place to start, Stratford’s Welding course may be worth checking out. You’ll get self-guided materials, instructor support, and an educational introduction to the skills used in many welding jobs.
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