Basic Criteria for Welder Qualification Welding Process as per Code API 1104

Basic Criteria for Welder Qualification Welding Process Test as per Code API 1104

Welding is a skilled trade that plays a critical role in various industries, from construction to manufacturing. To ensure the quality and safety of welded structures, welders need to be qualified through a standardized process. API 1104, a well-recognized welding code, outlines the fundamental requirements for welder qualification tests. In this article, we will explore the key elements of welder qualification as per API 1104.

The Significance of Welder Qualification

Welder qualification is not just a formality; it's a crucial step in maintaining the integrity of welded components. Here's why it matters:

1. Ensuring Safety: Welding is commonly used in high-stakes applications like pipelines and aerospace. Qualified welders are less likely to produce subpar welds that could lead to accidents or equipment failure.

2. Quality Assurance: Quality welding is about more than just fusing metal together; it's about creating strong, reliable bonds. Welder qualification ensures that welds meet the highest quality standards.

3. Compliance with Standards: Many industries and projects require adherence to specific welding codes and standards, such as API 1104. Compliance is not only a legal requirement but also a mark of professionalism.

The Basic Criteria for Welder Qualification

API 1104 outlines the essential criteria for welder qualification. These criteria encompass various aspects of welding, including:

1. Welding Processes: Different welding processes require unique skills. API 1104 covers a range of processes, and welders must be qualified for the specific process they'll be using.

2. Base Materials: The code specifies the types and grades of materials that welders are qualified to work with. This ensures that welders have the knowledge and experience to handle different materials effectively.

Also Read :- WPS Variable for SMAW

3. Weld Positions: Welding can be done in various positions, such as flat, horizontal, vertical, and overhead. Welders must pass qualification tests for the positions they'll be working in.

4. Test Coupons: Welder qualification tests involve the use of test coupons, which are samples of the materials to be welded. Welders must produce sound welds on these coupons according to the code's requirements.

5. Acceptance Criteria: API 1104 outlines specific acceptance criteria for welder qualification tests. This includes criteria for visual inspection, radiographic testing, and other non-destructive examination methods.

The Welder Qualification Process

The process of welder qualification typically follows these steps:

1. Training and Education: Welders undergo formal training and education to develop their welding skills and gain an understanding of API 1104 requirements.

2. Performance Testing: Welders must demonstrate their skills by performing welds on test coupons, adhering to the code's guidelines and acceptance criteria.

3. Inspection: The welded test coupons undergo thorough inspection, including visual examination and non-destructive testing, to ensure they meet the code's standards.

4. Documentation: Detailed documentation of the welder's qualifications is maintained, specifying the types of welding processes they are qualified for and the materials they can work with.


In the welding industry, adhering to codes and standards is not an option; it's a necessity. API 1104 provides comprehensive guidelines for welder qualification, covering processes, materials, positions, test coupons, and acceptance criteria. Ensuring that welders meet these fundamental criteria is a vital step in achieving reliable, high-quality welds.

1. What is API 1104?

API 1104 is a welding code that sets standards for the qualification of welders and welding procedures, particularly in industries where safety and quality are paramount.

2. Why is welder qualification important?

Welder qualification ensures that welders have the necessary skills and knowledge to perform welding tasks safely and effectively.

Also Read:- Procedure Qualification Record (PQR)

3. What are welder qualification test coupons?

Test coupons are samples of materials that welders use to demonstrate their welding skills and meet the code's acceptance criteria.

4. How can I become a qualified welder as per API 1104?

To become a qualified welder, you must undergo training, perform welds on test coupons, and pass the required inspections in accordance with the code. 

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