Mechanical Parts

Inspection Services for the Mechanical Industry

In the machining process, the slow wear of cutting tools will have a slight impact on the size of parts, which makes the dimension of components difficult to control in batch processing. Therefore, it is necessary to conduct quality inspection of mechanical parts during production and before shipment to ensure that the critical dimensions of the products meet the tolerance requirements.

NBN offers inspection services in China for wide range of mechanical parts, from standard parts to custom parts. Our expertise includes various turning parts, CNC parts, stamping parts, die-casting parts, welding parts, powder metallurgy and injection parts.

Our inspection process is to measure the dimensions and evaluate the appearance of the product according to client’s drawings. For mechanical parts with high precision or used in specific occasions, their physical properties, surface treatment and airtightness should also meet the technical standards, NBN works closely with the customer's technical team to develop and perform a variety of tests based on product features to ensure that your goods meets all quality requirements before shipping.

Standards used in all inspections:
Sampling standard: ANSI/ASQC Z1.4 (ISO2859-1)
Inspection standard: Acceptable Quality Limits (AQL)

The main tests for Mechanical parts inspection:

Go/No go check
Hardness test
Salt spray test
Function test
Mechanic performance test
Chemical composition check
Plating thickness check
Burrs check
Scratch check
Air tightness test
Roughness check
Flatness test
Coaxiality test
Gear error check
Color shading check (to plastic parts)
Anti-aging test (to plastic parts)