How Sumitec International Ensures Quality and Safety in Steel /Flange Manufacturing

Steel is used in a wide range of products, from kitchen appliances and televisions to tools and manufacturing equipment. However, steel manufacture will not always be ideal; just like any other material, flaws will occur during the manufacturing process. As a result, when it comes to steel/flange manufacture, Sumitec International places the highest priority on quality control by using an ISO 9001 Certified Quality System.

Steel Quality: What is it?

Steel quality is frequently defined in terms of how the material fits its requirements and chemistry, but its cleanliness or homogeneity can also be assessed.

Why is Steel Quality Control Important?

Steel structure failure or exhaustion can be avoided by using high-quality steel. Problems that can occur during production can lead to weakness, especially when the surface is bent or moulded.

Steel quality inspections are an essential aspect of steel quality control. Its objective is to ensure that the requirements of the specification are met. Checking the techniques, procedures, and materials used in the fabrication of steel buildings is critical since durability can be drastically reduced if not adequately tested.

Because steel production is so complex, it is usually a good idea to utilize third-party steel quality inspection services to ensure material quality. All flaws discovered during the inspection must be resolved immediately, or the projected timeframe for the initial maintenance of the material will be shortened. Various tests, both destructive and non-destructive, must be done to specify the various physical and mechanical attributes of the finished product.

How Does Sumitec International Check Steel Quality for Optimum Safety?

Steel strength and durability can be tested using a variety of methods. Whether you wish to test the quality of stainless steel or tool steel. We’ve compiled a list of quality control tests on which we rely to ensure the safety of the product. Let’s go through them:

#1  Spectrometer detection and analysis of chemical elements

This test evaluates the chemical composition of materials by analyzing the spectrum of light emitted by samples subjected to an energy source. The test allows for the assurance of steel profile quality, meeting the required specifications for end applications, and monitoring the consistency of materials used in production. It complies with the ISO 9001 Certified Quality System, which is the world recognized quality system.

#2 Metallographic analysis 

We investigate the internal structure of metal fragments using a microscope using this material analysis procedure. Under the microscope, representative samples are examined for the existence of faults or anomalies, as well as the grain of the material.

#3 Mechanical performance testing 

Mechanical qualities (such as hardness, tensile strength, and so on) of the products will be required for some unique usage or application. After forging, we will provide heat treatment service based on the required qualities. Mechanical testing will be used to demonstrate the quality of steel forgings and confirm the predicted attributes. The following are some standard mechanical property inspections:


Hardness testing: is performed on steel forgings when a hardness requirement exists. A Brinell or Rockwell hardness tester will be used to determine the hardness.

Tensile Testing: Destructive test technique that determines the products’ ultimate tensile strength, yield strength, elongation, and reduction area rate.

#4 Ultrasonic Test

Ultrasonic testing (UT) is another non-destructive inspection technique that we utilize to detect internal faults by using high-frequency sound waves. This test can detect cracks and incomplete fusion in the weld seam (after welding).

#5 Portable direct-reading optical instrument

Because of the versatility of direct-reading optical instruments, these are exceptionally successful in selective hardening of steel surfaces, particularly those prone to wear or fatigue. Although the heat generated by the laser at the surface is controlled in such applications to avoid melting, a sharp temperature gradient is created between the surface and the interior.

Surfaces of vehicle components such as camshafts and crankshafts are frequently hardened using laser transformation hardening. The method produces high hardness and good wear resistance with minimum deformation. Furthermore, unlike induction and flame hardening, the laser can be situated some distance from the workpiece.

Sumitec International ensures excellent steel manufacture in this manner by employing a portable direct-reading optical device.

#6 Macro erosion Test

At Sumitec International, we check how different types of steel hold up against erosion caused by cavitation. We looked at erosion rate, volume removal, roughness changes, and accumulated strain energy. Making minerals more erosion-resistant for wear protection in the industry can save money by reducing component failures, lowering maintenance costs, and minimizing plant downtime. Testing materials in the lab predict their erosion resistance for choosing the right products and predicting how long they’ll last in real-world use.

#7 Intergranular corrosion Test

Corrosion tests refer to destroying a substance through electrochemical, chemical, or metallurgical interaction. These tests assess the corrosion resistance of profiles by employing procedures like salt spray testing, electrochemical corrosion testing, and accelerated corrosion testing.

The results of these tests provide critical information on the strength and reliability of steel profiles, allowing the company to make any necessary modifications while maintaining the quality of its products. To imitate actual use situations, many sorts of environmental exposure testings are performed.

#8 Liquid Penetration Test

Liquid penetration testing is a non-destructive inspection procedure that uses capillary forces to detect surface faults such as laps, cracks, and porosity. The fault must be examined at the surface, but liquid penetrant testing provides an economical solution for evaluating large regions quickly.

The procedure involves drawing a liquid penetrant into the surface-breaking fault via capillary action before removing the extra surface penetrant. The surface is then treated with a developer, often a dry powder, to extract the penetrant from within the fault and give a surface indication.

The method can detect cracks as small as 150 nanometres and is frequently used to detect flaws in welds, pipelines, and bars, among other materials.

Dye penetrant testing, dye penetrant inspection, liquid penetrant examination, or simply penetrant testing are all terms used to describe liquid penetrant testing.

#9 Magnetic particle inspection

Magnetic particle inspection is an excellent way to find cracks, splits, seams, and inclusions in steel and iron. This approach detects any discontinuities just beneath the surface that are difficult to see with the naked eye.

#10 Dimensional inspection

Dimensional checks allow for the calculation of geometric measures and tolerances, as well as the identification of any deviations from the original CAD drawing early in the process. We use dimensional inspection both at the beginning and finish of a process to ensure the highest quality manufacturing and safety.

#11 Visual inspection

The first we follow is to analyze the profiles for flaws visually. We examine the surface for any undercuts or cracks. These are some prevalent defects that can jeopardize the strength of the metal.


Sumitec International is committed to maintaining the highest quality and safety standards in steel or industrial flange manufacturing. The company relies on the ISO 9001 Certified Quality System when it comes to manufacturing. Sumitec conducts a comprehensive series of tests and inspections to recognize the crucial relevance of steel quality control.

Sumitec @2023