Common tests include:
Material chemical composition, tensile/compression strength, surface hardness
Galvanizing, power coating thickness. Or Salt spray test for corrosion
Dye penetrate or ultrasound test for welding quality
We also regularly use authoritative, 3rd-party labs for testing.

Quality Goal:
For new product or parts, one-time pass rate should be 90% at least.
For mature products, yield rate should be greater than 98%. Zero defective product should leave the factory.
Timely delivery of products should be 95%
Stick to continuous improvement for satisfaction of customers should be 95% at least.

 We have passed ISO 9000 certifications. Certificate is available upon requests.

    We also welcome customers to come and audit our productions and give suggestions for improvements.