Difference Between WPS and PQR

WPS is welding procedure specification whereas PQR is procedure specification record. These are some of the significant and mandatory documents especially to ensure that the welds comply with the rules.

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WPS vs PQR

WPS is mostly created and formulated by the engineers and welders to ensure the resultant product complies with all the rules and regulations whereas PQR is used by the people who are responsible for quality checking, inspections, and certifications.

WPS vs PQR

WPS  is popularly known as the welder’s guide that comprises all the product features, standard, quality, and also code requirements.

PQR doesn’t usually talk about any ranges. It is just a result of the test conducted by the high officials who check the quality. It consists of the results obtained from the quality tests performed on the welded materials.

Comparison Table

Parameters of ComparisonWPSPQR
ContentsWPS contains information from the PQR and is written with PQR as guidance. PQR is not documented with the WPS as the reference.
Generic or NotWPS is not generic and contains a wide variety of relevant information.   PQR is generic and does not contain random information apart from whatever is needed.
DefinitionWPS is a document of rules, restrictions, guidance, and procedure to be followed during the process of welding.PQR contains the observations prepared from the test conducted on the manufactured products.
UsageWPS is used before the product is to be welded.  PQR is used after the product has been welded and the tests have been completed.
Place of UseWPS is used by welders in industries, factories, and workshops.  PQR is usually done by licensed officers and it is an out-of-industry document.

What is WPS?

The procedure and the process specified in the document are tested and proved to aid the welders in a successful way. It makes sure the safety, quality, and other factors are in check.

That is the main reason why the product should be manufactured and produced with the utmost care, and in compliance with all the rules.

This is a great tool that might come in handy for new welders, it helps them to hone and develop their skills to the same level as the welders who have been welding for years.

This helps in achieving perfection and also the customers can rely on the welders if they follow the WPS and the customers will receive good quality products. Some of the mechanical properties that are being specified in the WPS are strength, toughness, durability, and much more.

wps

What is PQR?

PQR contains the original method of preparation, testing, and quality test results of the product. It is the document that has the final results of all the tests conducted on the product.

It also enables and ensures the welder that this product is safe and worthy to be redesigned, manufactured, or replicated in future years.

The observations and inference obtained from the tests are documented in this to provide easy, appropriate, and standard access to people who would like to consider the purchase of the product and replication.

The results also include that of the tensile tests and also guided bend tests. It also discloses the name of the welder who has manufactured, the person in charge of inspection, and also the names of the people who were involved in making observations from tests.

Main Differences Between WPS and PQR

WPS is used inside the industries whereas PQR is used outside the industries.

References

  1. https://www.koreascience.or.kr/article/JAKO201608450940747.page
  2. https://inis.iaea.org/search/search.aspx?orig_q=RN:41116877
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