Quality Control Processes and Tools


Our QC processes evolve around the 5 QCPs (Quality Control Perspectives): Regulatory, Durability, Safety, Functionality and Cosmetics. Each project will have its own set of Quality Specification produced with specific QCPs and the customer’s requirement in mind. The Quality Specification may be approved by the client before a QC plan can be devised. Projects may have varying sampling size and quality standard, depending on the criteria of a project (such as production volume, value and complexity of the product).

Metallurgical Analysis

We use scientific analysis to identify issues in our products

The properties of a metal piece are largely determined by its material composition and microstructures, but it can be very difficult to identify problems in these aspects. Our QC team utilizes a range of specialized analysis to resolve manufacturing issues related to metallurgy.

Composition Analysis:

  • Spectrometer are used to provide precise analysis of common metals. We employ advanced digital CCD Spectrometer to monitor metal composition and ensure material quality throughout our production processes.
  • We also test our product samples with a range of chemical tests. This method is a reliable way to verify material composition and identify impurities or contaminants.
Espectrómetro de Emisión para el análisis de la composición química
Emission Spectrometer for chemical composition analysis
Muestras probadas con el espectrógrafo
Tested spectrograph samples

Metallographic Analysis:

Metallugrical Microscopes are used in combination with advanced image analysis system to study and document microstructures on metal substrates. Our system can easily identify metallurgical issues on any product.

Microscopio metalúrgico
Metallugrical Microscope
Microscopio metalúrgico
Metallugrical Microscope
Image Analysis System

Mechanical Properties Tests

Every mechanical property is just as important

We use several test methods to observe the behavior of a material when an external force is applied. These test results can help our engineering team to select the appropriate materials for different applications.

  • When subjected to a tensile load, a part will increase in length but decrease in cross-sectional area, weakening it to a point where it will eventually break. Elongation is a measure on how much a part can stretch before breaking. We use a range of Extensometers and Computerized Tensile Testing Machines to measure the elongation of a material.

UTS is the maximum tension stress (measured in MPa) a material can withstand under a tensile load before breaking. Universal Tensile Strength Testing Machines are used in this type of tests.

Tensile Tension Test
Tensile Tension Test
  • Yield strength measures the stress a material can withstand without permanent deformation. Universal Tensile Strength Testing Machines and specialized Yield Strength Testing Machines are used in yield strength tests.
Yield strength measure Equipment
Yield strength measure Equipment
Yield strength measure Equipment
Yield strength measure Equipment
  • Hardness refers to a material’s ability to resist mechanical indentation, scratching, abrasion, cutting, penetration and other deformation. Material hardness is critical in engineering design, as it determines the functionality and durability of a product. We use a range of Rockwell Hardness Testers and portable Hardness Probe Testers in our harness tests.
Hardness Testing Equipment
Hardness Testing Equipment

Dimensional Measurement

Every dimension is crucial

to the functionality of a product

Our QC inspection also involves extensive use of specialized equipment to monitor the dimensions and profile of our products. In the hands of our QC specialists, these tools can produce high precision measurement, which is crucial in our effort to ensure product quality.

Coordinate Measuring Machine (CMM) are used to measure the geometry of any physical object. CMM can incorporate different types of probes including mechanical probes and non-contact probes (optical, laser and white light).
The most common type of CMM is the 3D “bridge” CMM. These machines often have a computer-controlled probe that moves along three axis (X, Y and Z). The machine can record the position of sensor points to produce a 3D image, which describes the surface areas of the scanned part. These images can be used in a digital environment for further analysis.

Las Máquinas de Medición de Coordenadas (MMC) se utilizan para medir la geometría de cualquier objeto físico. Las CMM pueden incorporar diferentes tipos de sondas, incluyendo sondas mecánicas y sondas sin contacto (ópticas, láser y de luz blanca). El tipo más común de MMC es la MMC de "puente" 3D. Estas máquinas suelen tener una sonda controlada por ordenador que se mueve a lo largo de tres ejes (X, Y y Z). La máquina puede registrar la posición de los puntos del sensor para producir una imagen 3D, que describe las áreas de superficie de la pieza escaneada. Estas imágenes pueden ser utilizadas en un entorno digital para un análisis posterior.
CMM Inspection
MMC automático para la inspección
Automatic CMM for inspection

FaroArm is a portable CMM machine that is manually controlled and allows unrestricted multi-axis movement. These machines can be deployed in a wide range of work environments and perform tasks beyond the limitations of a typical CMM.

Inspección del Faro
Faro Arm Inspection

Also called Optical Comparator or Profile Projector, this device draws on the principles of optics for dimensional inspection. The magnified silhouette of a part is projected on a screen and measured against the prescribed limits. It is a cost-effective non-contact measurement solution with high precision. We use a range of High Precision Optical Measuring Profile Projector and Automatic Video Measuring Machines to measure the dimensions and geometry of our products.

Optical Measurement Projector

A height gauge is used to accurately measure the height of parts. We use a combination of manual and digital Height Gauge for height Measurement.

Medidor de altura digital en la placa de la superficie
Digital height gauge on surface plate
Medidor de altura digital en la placa de la superficie
Caliper height gauge on surface plate

All surfaces have tiny irregularities on them, which are often very small and hard to detect. With the use of specialized Surface Roughness Testers, we can measure the roughness of any surface and provide quantitative data for our QC analysis.

Todas las superficies tienen pequeñas irregularidades, que a menudo son muy pequeñas y difíciles de detectar. Con el uso de probadores de rugosidad de superficie especializados, podemos medir la rugosidad de cualquier superficie y proporcionar datos cuantitativos para nuestro análisis de control de calidad.
Operator inspection by Roughness Tester
Inspección del operador con el Probador de Rugosidad
Operator inspection by Roughness Tester
Roughness Test Equipment

Every component has its own importance in a design, and we should never overlook a humble screw or nut. We use a series of Go/no go Thread Pitch Gauges, Plug Gauges and Ring Gauges to ensure every thread profile is up to spec.

Medición con medidores de rosca
Thread gauges Measuring

Pin Gauges and Plug gauges are tools used for measuring the diameter of a hole. They can also be used as reference tools for geometric deviations measurements.

Medidor Pasador
Pin Gauges
Medidor Pasador
Pin Gauges

A Feeler Gauge is a measuring tool composed of a set of folding metal strips with varying thickness. They are used to measure gap widths and ensure clearance between parts.

Palpador Indicador
Feeler Gauge
Medición con Calibre Fio
Feeler Gauge Measurement

We utilize a range of digital Thickness Gauge to measure the thickness of sheet material. We also have specialized coating Thickness Gauges that allow non-destructive coating thickness measurement of non-magnetic coatings.

Midiendo el detalle del acero con el calibre digital Vernier
Measuring steel detail with digital Vernier Caliper

Conventional “tip and anvil” style Thickness Gauges can only measure smaller parts. When it comes to measurement on larger substrates such as pressure vessels, tanks or industrial machines, we often use the more versatile Ultrasonic Thickness Testers.

Prueba Ultrasónica
Ultrasonic Test

Some products may require special testing methods, with no proprietary QC equipment available on the market. In these cases, our engineering team will create our own solution for the project.

Housing Checking Gauge 1:
Mainly used to ensure housing part structures are in the right positions according to the requirements.

Medidor de Control de Productos con Carcasa
Housing Products Checking Gauge
Medidor de Control de Productos con Carcasa
Housing Products Checking Gauge

Housing Checking Gauge 2:
Mainly used to validate the surface on a housing part is perpendicular to the referencing axis as stated in the requirements.

Medidor de Control de Productos con Carcasa
Housing Products Checking Gauge
Medidor de Control de Productos con Carcasa
Housing Products Checking Gauge

Idle gear and pinion gear checking gauge:
These gauges are used to ensure gear profile are up to specification.

Idle gear and pinion gear checking gauge
Idle gear and pinion gear checking gauge
Idle gear

Surface Treatment Tests

Our testing methods are much more than scratching the surface of a product

Surface finishing and treatment is another important aspect in quality control. Our QC team is proficient in a range of specialized testing methods in this category.

Adhesion testing is used to determine if the coating can properly adhere to the substrate. This category includes several test methods, including cross-cut test, scrape adhesion test, pull-off test, and others.

UV Weathering Test Machines can simulate the effect of sunlight and weather on products. This method allows us to effectively assess weather resistance of products and lifespan of color coatings. 

Handheld LED UV Black light Lamps to find crack on steel tube
Handheld LED UV Black light Lamps to find crack on steel tube

The Salt Spray Test is a corrosion test used to check corrosion resistance of materials and surface coatings. It has gained a lot of popularity in the manufacturing industry due to repeatability, low cost and quick results. It should be noted that Salt Spray Test results generally do not correlate with the real-world performance of a product. It is instead used as a method to detect problems in coating pre-treatment or paint quality.

For products with stringent color requirements, we may offer a Color Comparison Test that follows the Pantone color matching system. We make use of professional color check light boxes and Pantone color books to ensure the color on your product matches exactly with your requirement.

Color control with spectrophotometer
Color control with spectrophotometer

Certain chemicals may cause discoloration, change of texture, swelling, blistering or flaking of coatings. Chemical Resistance Tests can help us identify coating problems and make the necessary changes on our finishing processes. A common example in this category is Alcohol Rubber abrasion Tester.

We also utilize a range of specialized Coating Thickness Gauge to measure the thickness of anodizing, electroplating, spray paint and powder coatings. These dual-purpose Thickness Gauges can be used on ferrous and non-ferrous metal substrates.

Ultrasonic testing is a widely adopted by the metallurgy industry to detect Hidden defects in a product. Our QC specialists are familiar with the use of digital Ultrasonic Flaw Detector to identify casting porosity or other quality issues in all kinds of substrates.

Packaging Tests

We are responsible from the start to finish

Our effort to consolidate customer satisfaction persists beyond the factory floor. We see packaging as an integral part of the product itself, and we couldn’t emphasize enough on the importance of proper packaging.

Edge crush test
Edge crush test

From our experience, we know just how tough the delivery ride can be. In our Packaging Tests, a range of specialized equipment is used to simulate the vibration and impact during delivery. The test results and the load on the bottom carton are all taken into account in the design of the packaging to ensure the package can withstand the delivery journey. 

We are always ready to help with your latest project.

Contact our Customer Service and let us know how we can help to catapult your next project to success.

Years In Business
Years of ISO 9001 Certification
Manufacturing Processes
Qualified Engineers
Combined Years of Expertise

Contact us

Phone nos.:
    Asia Pacific, South America, Africa and rest of the world:
   +86 20 8388 7080
   UK: +44 (0)808 123 0080
   USA/Canada:  + 1 (800) 967 2110


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