The process of manufacturing efficient and high-performance industrial pumps  involves a series of inspections and tests, both before and after assembly.

These inspections and tests are helpful to verify that the manufacturing processes are carried out in accordance to fabrication criteria and required standards.

It is important to keep in mind that industrial pumps are normally exposed to many factors during operation. Some of those factors are:

  • Mechanical loads.
  • Hydraulic loads.
  • Thermal variations.
  • Environmental factors.

Therefore, the manufacturer needs to make sure the pump is ready to deal with all those factors which arise in the worst-case scenarios to guarantee they will operate efficiently and reliably.

Non-destructive testing for industrial pumps

Non-destructive testing is a great way to verify the pumps being manufactured are ready to operate efficiently and reliably.

Some common non-destructive tests applied on pumps include:

Ultrasonic tests

Ultrasonic tests are a great way to verify the performance of different areas of the pumps. Common areas tested with ultrasound technology include:

  • Material thickness
  • Material hardness
  • Material cracks and other discontinuities
  • Corrosion
  • Integrity of welds

It is clear that verifying the performance of the areas mentioned above is essential during and after the production of the pumps to guarantee proper operation.

This type of tests can be performed with tools such as:

Ultrasonic thickness gauges

ultrasonic thickness measurement

In photo: ultrasonic thickness measurement SAMA Tools

Ultrasonic hardness testers

Ultrasonic hardness tester

In photo: Ultrasonic hardness tester SAMA Tools

Ultrasonic flaw detectors

flaw inspections

In photo: flaw inspections SAMA Tools

Magnetic particle detection

These types of tests can be performed by measuring instruments such as our ultrasonic thickness gauges, ultrasonic hardness testers or ultrasonic flaw detectors.

As the name suggests, this type of non-destructive test uses the magnetic particle method for the detection of possible flaws on the surface or at sub-surface levels of the materials.

This test is particularly useful to verify the integrity of welded areas and cast parts, with the possibility to identify cracks and other defects before the pump goes into operation.

Tools such as our AC/DC magnetic detector and our digital gaussmeter can be of great help when performing magnetic particle tests on pumps.

AC/DC magnetic detector and our digital gaussmeter

In photo: AC/DC magnetic detector and our digital gaussmeter SAMA Tools

Dye penetrant test

This is a typical metallurgic test to verify the integrity of materials. It takes advantage of highly capillary liquids that are used to reveal possible defects and discontinuities on the material. This helps identify problems in welds, and other critical areas of the pumps.

Some penetrating liquids we offer include:

  • Fluorescent penetrant spray
  • White penetrating spray
  • Red penetrating spray

These are three important non-destructive tests that are recommended to guarantee that pumps are ready to withstand the factors mentioned above, especially those related to the operation of machines, such as mechanical and hydraulic loads.

Nevertheless, there is another important aspect to verify during and fabrication, and even after certain operational time, when maintenance is required.

Read on as we explain further.

Penetrant spray

In photo: Penetrant spray SAMA Tools

Dealing with the environment

Pumps that are exposed to the environment, especially under tough conditions, require special protection to guarantee operation without failure.

A common practice is applying special coatings to protect against corrosion and other environmental effects. To achieve the required coating protection, both the surface of the materials being coated and the coating applied need to comply with certain requirements.

Some examples of these requirements are:

  • Adequate surface roughness
  • Proper adherence of the coating
  • Correct coating thickness
  • Expected coating elasticity
  • Specific hardness and abrasion resistance

To verify compliance with these requirements, some tests and measurements must be carried out. Tools that are necessary include:

In addition, pumps must be design to very tight tolerances and require high-precision manufacturing processes to operate at the highest possible efficiency. And those tolerances must be maintained throughout their lifespan. Moreover, thermal variations from operation or from exposure to the environment in different seasons may affect the dimensions of different parts, thus drifting away from the tolerance ranges.

A good way to ensure the parts of the pump are within the tolerance range, and identify whether thermal variations are having an impact is by performing dimensional verifications.

However, for some parts, dimensional verifications may require special measuring instruments. But any manufacturer striving for excellence knows the investment is worth it. And this is the case with several of our customers in this sector.

quality control

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Other verifications to produce industrial pumps

There are also special measuring instruments that help the customers to guarantee the dimensions of different parts in pumps and pressure units comply with their standards.

Among the most chosen tools, there are the outside micrometers with exchangeable anvils and carbide tipped measuring faces reading 0,01mm – SAX101

With these instruments, you can measure even the biggest parts of pumps, including outside coverings while ensuring the tolerances are met to values as small as 0,01 mm.

Failure to comply with dimensional tolerances could result in reduced efficiency and/or reliability of products, which may bring different consequences such as:

  • Increased customer dissatisfaction
  • Reduced profitability
  • Loss of reputation

Fortunately, all those consequences can be avoided by implementing the right quality control (QC) and quality assurance (QA) processes while using the right tools.

customers satisfation

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Now that you have a complete picture of what checks are needed to produce high-performance pumps, you can count on our SAMA Tools brand for the supply of both standard measuring instruments, such as external micrometers, calipers, dial gauges, and a wide variety of non-destructive testing tools.

Because our mission is to support our customers in their quality control activities, we strive to provide them with the best solutions to cover their needs.
If you need help with measuring instruments, or would like advice on the best tool for your specific case, do not hesitate to contact our technical department.
You can call us at 0584/3923420584/392453 or, alternatively, contact us by e-mail at

Did you know that Direct Industry selected SAMA Tools as a quality brand for measuring instruments?

As we already mentioned in our article Measuring Instruments: 5 tips for a quality choice, our company operates in Italy but is also well structured to reach the international market.

The Direct Industry portal, an innovative international marketplace B2B for the industry, has been of great help to us.

Direct Industry has selected SAMA Tools as a quality brand, always supporting us. This is particularly useful when when travel was impossible because of the global pandemic.

Direct Industry: An important showcase for our measuring instruments all over the world

This channel, which is constantly updated, allows us to overcome physical distances every day, by allowing us to keep in touch with thousands of buyers who are looking for our measuring tools.

If you are one of them, you have surely noticed the simplicity in contacting us and the speed of our customized courteous replies. Each customer deserves personalized answers according to his or her different needs.

The instruments that SAMA Italia produces are numerous, but every market needs to be followed carefully and in a personalized way.

Sama Italia stand on Direct Industry

In photo: SAMA Italia stand on Direct Industry

Constant staff Export training

This is why, our staff is in constant training, to help deal with different aspects which are necessary in order to work efficently and ensure maximum serenity to foreign customers.

We are talking about customs, transport, taxes, etc.

It is clear that the sharp increase in relationships and sales that we are experiencing in the international market is the result of the synergy between trained and available staff, together with suppliers that can guarantee us a high quality standard, just like Direct Industry.

training courses at work

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The importance of feedback and customer relationships

Can high numbers be enough to be satisfied?
Not for SAMA Italia!

That’s why we listen to our customers in after-sales.

The opinion of those who have trusted us is fundamental and certainly the center of our modus operandi.

For both the Italian and foreign markets, our doors are always open to those who want to give us feedback regarding their purchase experience.

How was it dealing with us? Simple or complicated?
How did we deal with you? In a polite and professional way or could we do better?
Did the quality of our instruments meet your expectations?

These are some of tour customers opinions.

Our customer feedback

Continue reading to find out about a theme that we care a lot: customer satisfation. Read the feedback yourself on our Wall of Love.

Also for Direct Industry, buyer satisfaction is essential, so they assigned us a rating based on the feedback received.

SAMA Italia enjoys a 5/5 rating which makes us extremely satisfied but also always attentive in working day after day to maintain our top rating.

Customer's feedback

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Become a retailer of SAMA Tools brand

Are you a retailer interested in importing our brand of measuring instruments into your country?

You could be the right partner for us, helping to spread our brand which is already recognized in many countries and is synonymous with excellent quality/ price ratio, along with efficient technical assistance and service.

Click here and fill out the form to get in touch with us!

Video summary: “Direct Industry has selected SAMA Tools as a quality brand”



Based on the name “ultrasonic instruments”, it is clear that these are devices that use ultrasound to perform their function. So, to be able to answer the question “what are ultrasonic instruments?” , one should begin by describing what ultrasound is.

What is ultrasound?

Ultrasound makes reference to the principle of using sound waves at very high frequencies, usually higher than those the humans can hear. This means that ultrasound applies frequencies higher than 20 kilohertz with operating values reaching up to the gigahertz ranges depending on the ultrasonic instrument.
The word ultrasound is commonly heard in the health sector, where ultrasound imaging is commonplace.
Yet, when it comes to the engineering field, ultrasonic instruments are used for different purposes, such as non-destructive testing, measurement and quality control.

Ultrasonic instruments for non-destructive testing

Some ultrasonic instruments are used for non-destructive testing in order to identify and verify mechanical features while keeping the integrity of the part tested.
This type of ultrasonic instruments is especially useful for finished parts or products. They allow you to identify and test aspects such as:

  • Flaws on the surface finish which may not be visible to the eye.
  • Hardness of the material.
  • Pipe fractures that may lead to leakage.
  • Other invisible flaws.

Ultrasonic instruments - saut500

Using ultrasonic instruments for non-destructive testing provides you with a series of advantages, for example:

  • Both internal and external flaws can be detected.
  • Both volumetric and crack like flaws can be detected no matter their orientation
  • Some instruments take the exact same time to test pieces with different thickness.
  • The radiation risk present with the radiography method of testing is eliminated.

Among the most common ultrasonic instruments used for non-destructive testing, we offer:

Reference standards for non-destructive testing

Non-destructive testing is regulated by different standards which determine the verification methods to be applied according to the material, the thickness of the metal, the type of joint, etc.

S.A.M.A. Italia is associated with UNI Ente italiano di Normazione:

Being a Member allows you to participate personally in the definition of the rules, helping to define the rules of your sector of reference rather than subject them.

UNI allows members and not to consult the reference standards at any time, purchasing them online.

Italian Association of Non-Destructive Tests

AIPnD has been present in Italy since 1979.  It’s a scientific, cultural and professional organization and it’s among the first and most important in the world in its sector.

Its members belong to institutes, research centers, organizations, schools, professional firms, instrumentation manufacturers and companies that provide PnD services.

The association is based in Brescia, Italy and promotes scientific and technical knowledge.  It’s also involved in the technological development of non-destructive tests as well as enhancing the profession of those working in the sector.

Ultrasonic intruments - saut310d-sw

Ultrasonic instruments for measurement

Another group of ultrasonic instruments is formed by those used to measure parameters such as the thickness of a material or a coating with high precision.
This group uses a measuring method called “Ultrasonic Thickness Measurement” or UTM. Therefore, they are usually known as ultrasonic measuring gauges.
Ultrasonic measuring gauges are capable of measuring the thickness by using a probe that generates an ultrasound pulse and sends it through the thickness of the part being measured.
Then, the instrument calculates the thickness by a calculation that considers the time needed for that ultrasound pulse to go through, get reflected by the opposite surface of the piece and return to the probe.
With the values obtained by the instrument, it is possible to identify and verify:

  • Thickness of the material for possible wear.
  • Corrosion on the material.
  • Possibility of splitting material.
  • Accurate coating thickness.

Considered part of the non-destructive testing tools, ultrasonic instruments for measurement offer a variety of benefits, such as:

  • Not damaging the measured sample.
  • Access to both sides of the sample is not required.
  • High precision achieved.
  • Do not require laboratory like conditions to work.
  • These instruments are cheap compared to other alternatives.

Some ultrasonic measurement instruments that you can get with us include:

Watch the video we made on the graphic thickness gauge

Ultrasonic instruments for quality control

Both non-destructive testing and measurements are used to compare results with what is expected. If results match the specifications of the part or the product tested, it can be concluded that the part has the quality desired.
It is then obvious that ultrasonic instruments are an important asset for quality control. Most ultrasonic instruments provide information which is essential for quality assurance, such as:

  • Roughness measure and control.
  • Wall thickness.
  • Coating thickness.
  • Color and gloss differences measure.
  • Hardness of the material.

Therefore, benefits for the quality control department include all the benefits mentioned above, plus the fact that some of these instruments can be applied directly in the production line without the need of taking samples to a laboratory.
Also, all the ultrasonic instruments mentioned above are useful for quality control activities, but we have more. Other instruments we offer and can come in handy for quality control are:

  • Portable surface roughness testers.
  • External probe surface roughness testers.
  • Integrated probe digital coating thickness gauges.
  • External probe digital coating thickness gauges.

And this is just a small list.

ultrasonic instruments sa8825fn

What materials can be tested?

At this point, you should already known what are ultrasonic instruments, how they work and their main applications.
However, it is also important to understand which are the materials that make ultrasonic instruments the right choice.
Fortunately, these instruments work with a wide range of materials, especially if they are high-quality instruments.
For example, our precision ultrasonic thickness gauge – SAUT160 can measure the thickness of ultrasonic conducting materials such as:

  • Steel
  • Cast Iron
  • Aluminum
  • Copper
  • Brass
  • Zinc
  • Quartz Glass
  • Polyethylene
  • PVC
  • Gray Cast Iron
  • Spheroidal Iron

8 Articles on ultrasonic instruments for further information

Are you interested in learning more about this topic?

We have selected these themed articles for you:

1.  Ultrasonic Thickness Measurement: definitive guide
2.  Coating Thickness Measurement
3.  Graphic Ultrasonic Thickness Gauge – SAUT6100D-SW
4.  Sheet Metal Manufactoring and Quality Control
5.  Industrial Pumps: What checks do you need to do for high performance?
6.  Quality Control of the Coating on Commercial Vessels and Mega Yachts: MCR Marine
7.  Ultrasonic Thickness Gauge: the case of Progetto PSC S.r.l
8.  Gloss vs Brightness: What’s the difference?

Final thoughts

It is clear that a short and accurate answer for the question “what are ultrasonic instruments?” could be “powerful measuring and testing tools”.

The fact that these instruments are capable of providing essential information to improve the quality of products and processes makes them a must have for any company, that takes their business seriously.

Keep in mind that ultrasonic instruments are not only for quality control, some of them are also very useful on the field to perform maintenance inspections on tanks, metal sheets, pipelines, under pressure containers, bulkheads, and other equipment where corrosion and other defects may be present.

If you are interested in acquiring any of our ultrasonic instruments, or you have any inquiries about these and any other of our products or services, do not hesitate to contact us. We are happy to help you.