If you are going to carry out welding work, it is important that you know what you are doing. Welding can severely damage good quality base materials if the welder is not competent or does not observe the procedures associated with the raw material. Problems that occur with products or constructions can often be traced back to the welding process. For this reason, the old adage still applies: "the best weld is achieved by not welding at all."

However, welding continues to be a necessary technique in spite of this saying and, as a result, customers are increasingly including requirements in their plans and specifications that have an impact on the welding process. These requirements can range from a welder performance qualification (WPQ) or a welding procedure qualification record (WPQR) to a completely new quality assurance system in accordance with various standards and guidelines, sometimes certified by a notified body or external organization.

Welding Procedure Qualification RecordWPQR
A WPQR is a company-specific qualification. It proves that the holding company possesses the technical welding knowledge necessary to perform metal joining work. Generally, a new welding procedure qualification record is required each time a welding procedure is introduced. To obtain the qualification, an independent specialist must observe the new procedure being used on a sample welding plate or pipe. Element's experienced welding coordinators can support you in the process of creating welding procedures and are also authorized to act as independent specialists. Once the sample welding plate or pipe has been welded, it is sawn into test samples, which can then be passed to the Element laboratories for destructive and non-destructive testing. Non-destructive testing usually includes visual, X-ray, penetrant or magnetic testing procedures, while destructive testing involves tensile testing, bend testing, Charpy impact testing, hardness measurements and macro- and microscopic investigations, as well as Ferrite content measurement, CTOD and corrosion tests if required. Element then presents the results of these tests in a certificate—the WPQR—which provides a practical assessment of the welding method description.

Welder Performance Qualification — WPQ
A WPQ is a test certificate that shows whether a welder is skilled in welding to the specifications of a particular standard. Destructive and non-destructive tests are used to determine whether the welder is capable of producing a good weld quality using the welding processes, materials and prescribed procedures. A welder who has performed a test weld for a welding procedure qualification record (WPQR) automatically qualifies as a welder. The scope of the WPQ test varies depending on the requirements, but it generally involves some destructive tests, including bend testing and macroscopic investigations, as well as non-destructive tests. If a good result is achieved, the welder receives an individual test certificate — the WPQ.

Weld Standards and Specifications

Element welding specialists are familiar with a highly diverse range of codes and standards, including:

  • ISO, NEN-EN, standards ISO 15614, ISO 15609, ISO 9606, EN287-1, ISO 3834, ISO 5817
  • American Welding Society, AWS D1.1 to AWS D1.6, AWS D9.1, AWS D14.1, AWS D14.6, AWS D15.1
  • American Society of Mechanical Engineers, ASME B31.1, B31.3,
  • ASME Section IX, Pressure & Power Piping Code
  • Military Standard AMS-STD-1595 Military & Aircraft, AMS-STD-2219
  • American Petroleum Institute, API 1104 Petroleum Piping
  • TÜV/PED 97/23/EC

Alongside these standards, almost all large concerns and insurance companies have their own additional, company-specific welding specifications. Element welding specialists are also familiar with these requirements, including:

  • DNV rules, Lloyds rules, Norsok, Shell DEP, Total spec, Tata steel welding standard, etc.

Weld Engineering and Testing

Element's Engaged Experts include Certified Welding Inspectors (CWI), and Certified Welding Engineers (CWEng) and International Welding Engineers (IWE) experienced in all aspects of welding requirements for ferrous, nonferrous, and polymer properties. To help you keep up with ever-changing technological advancements, Element provides critical welding-related services, including weld qualification testing, development of weld procedures for specification and code compliance, weld failure analysis, weld quality analysis, and welding process auditing and improvement services. 

Welding and Inspection

Related Services, Accreditations, and Standards


Weld qualification testing

Development of weld procedures for specification and code compliance

Weld quality analysis

Weld failure analysis

Welding process auditing and improvement services

Welding procedure qualification record (WPQR)

Welder performance qualification (WPQ)


ISO and NEN-EN standards 

ISO 15614

ISO 15609

ISO 9606


ISO 3834

ISO 5817

American Welding Society

AWS D1.1 to AWS D1.6

AWS D9.1

AWS D14.1

AWS D14.6

AWS D15.1

American Society of Mechanical Engineers

ASME B31.1

ASME B31.3

ASME Section IX

Pressure & Power Piping Code

Other related specifications

DNV rules

Lloyds rules


Shell DEP

Total spec

Tata steel welding standard

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