To put it simply, a coded welder is someone who has completed a Welder Approval Test in a specific welding configuration.
As a coded welder, you will possess the skills required to work in some of the most highly regulated sectors. You will be working on a range of safety-critical applications such as pressure vessels and pressure pipework.
In the UK, welder approval codes are to BS EN ISO standards. The USA uses the ASME IX standard.
Each method is specific to a particular job at hand, some codes are more general, and some are very specific. The more specific methods need individual parameters allocated via a weld test inspector.
A welding specification requires testing to that specification. The welder will offer a welding sample that mirrors the position as closely as possible. You will produce a weld following written instructions. An approved CSWIP examiner will then perform a:
- Visual Or Surface Inspection
- Destructive Bend Test
- Nick Break Fracture Test
- Macro Etch
If the welder passes, they are Coded to that specification.
Being Coded in a particular specification does not mean you are qualified in another, even though you are Coded.
Each specification requires welder training, welding tests and examination, becoming a multi-coded welder. Generally, Welders are retested every two years.
In welding, documents known as codes set a standard of practice that ensures quality is maintained throughout.
As a coded welder in the UK, you will be operating under one of the following:
- BS – National British Standard
- ISO – International Standards Organisation
- BS EN – European British Standard European Standard
- AWS – US American Welding Society
- ASME – American Society of Mechanical Engineers
Some common codes:
- BS EN ISO 9606
- BS 4872
- BS EN ISO 15614 -1
- AWS D1.1/ D1.2/ D1.6
- ASME Section IX
What are the different types of welding?
TIG – Also Known as Gas Tungsten Arc Welding (GTAW). We use TIG when weld integrity is critical and requires high-quality welds. TIG leaves no splatter and minimises potential defects during the welding process.
MIG – also known as Gas Metal Arc Welding (GMAW). MIG is the most common industrial welding process. It produces high-quality welds much quicker. It also covers a wide variety of metals and alloys.
MMA – also known as Stick Welding or Shielded Metal Arc Welding (SMAW). MMA is a low-cost technique and is very versatile. Once mastered, the engineer can use it on a wide variety of materials in almost any environment and position.
Fusion Welding – This method is for welding polythene pipes such as MDPE. They are using heat and copper wire to fuse/melt the ends together. Gas and Water pipework usually require Fusion Welding. It can also be used for acidic environments where other materials would fail or degrade over time.
You can find out more about Welding types on our blog post “What Is Welding“
Coded Welders at Varlowe Industrial Services
Here at Varlowe Industrial Services, we have a team of multi-coded welders.
We cover an extensive range of specifications, materials, diameters and thicknesses.
All our operatives’ welder approvals are supported by a qualified welding procedure (WPQR).
Based out of our Wolverhampton head office, we offer a nationwide mobile welding service.
Our coded welders can work from our fully equipped mobile welding vehicles. This allows us to offer support at your site, even in remote locations.
We are your complete Welding Service.
For more information on our Coded Welding services, visit our Coded Welding page.
You can also visit our Welding Services page.
If you wish to speak to somebody, please call 01902 861042 or email [email protected].
For more on the different welding types, please visit this post from Cromweld.
You can also find more information on Wikipedia.