Pneumatic testing is a type of nondestructive testing (NDT) that uses pressurized air or gas to evaluate the integrity, serviceability, and quality of various materials, components, and systems. Pneumatic testing is used in a wide range of industries, including oil and gas, aerospace, automotive, and construction.

Pneumatic testing typically involves the use of specialized equipment, such as air compressors, pressure gauges, and test hoses. The equipment is used to apply a pressurized air or gas to the test specimen, and to monitor the pressure, flow, and other parameters during the test.

Pneumatic testing is used to detect and diagnose defects, flaws, and other imperfections in materials, components, and systems. Pneumatic testing is typically performed on materials and components that are not easily accessible or visible, and is used to evaluate the structural integrity, serviceability, and quality of the test specimen.

Pneumatic testing is performed by qualified and certified NDT technicians, who have the skills, knowledge, and experience to operate the pneumatic testing equipment, and to interpret and evaluate the results of the tests. Pneumatic testing technicians typically work in manufacturing and inspection facilities, and are responsible for ensuring the quality, reliability, and safety of the materials and components being tested.

Pneumatic testing is regulated by national and international standards and guidelines, such as the American Society for Nondestructive Testing (ASNT) and the European Committee for Standardization (CEN). These standards and guidelines provide requirements and guidance for the application, performance, and evaluation of pneumatic testing, and are used to ensure the consistency, reliability, and validity of pneumatic testing inspections and results.