Whether professional copper castings meet the quality standards must undergo strict testing. Only when all aspects meet the requirements can they be identified as qualified products. The inspection regulations include the following aspects.

First of all, it is about the inspection of the surface quality of copper castings. 5B test, salt spray test, and UV resistance test must be done; if there is thread on the casting, it must be processed with a fixture, high-precision tapping A wire machine is a good choice. After processing, the thread must be checked with a special thread stop gauge and thread caliper to ensure that the thread is qualified. If the casting has to bear a large force in specific use, the stainless steel casting manufacturer should conduct a compressive strength test and an elongation test in advance. Next is the inspection of the shape and size specifications of the bronze casting. If the regulations are not very strict, only the flatness inspection is required. If the casting will be used as a high-precision part, the flatness, flatness, straightness, runout, coaxiality and directionality checks cannot be missing.