Quality Assurance

We understand our customers’ need for a consistent and reliable supply of components. Our Quality Assurance methods therefore focus on three main areas. Testing, Statistical Process Control and Quality Management System to ISO 9001:2015.


Testing can be carried out by either API Engineering or a third-party as customer requirements dictate.

Our inspectors are capable of carrying out a range of destructive and non-destructive tests to ensure that all components meet relevant international, industry or customer specific quality standards.

Our testing capabilities include, but are not limited to the following:

Metallurgical Testing

Chemical Composition Inspection

Mechanical Properties


Non-Destructive Testing (NDT)

The aim of Non-Destructive Testing is to detect material defects, without damaging the material or product. NDT methods used by API Engineering include; Die Penetrant and Magnetic Particle Testing, Ultrasonic Testing and X-Ray Flaw Detection.

In addition to inspecting components and equipment before packing and shipment, all of our sub-suppliers have passed our formal audit and approval process.

Statistical Process Control (SPC)

For medium to high-volume components, we employ SPC to manage and control production. This is a method of quality control which employs statistical methods to monitor processes. SPC is part of our continuous improvement process.

Quality Management System (QMS)

Our management system is certified to ISO 9001:2015 and provides a formalised system on which we operate of business. A key focus of our QMS is communication, both internally and with our customers and suppliers.