Cast iron bushing refers to castings made of ductile iron, which has various advantages such as excellent toughness. The performance of ductile castings is basically close to that of steel castings, with good strength, toughness and wear resistance. Moreover, the application of ductile castings is also very extensive, which is a very good iron casting. Do you know how to check the quality of ductile castings before they leave the factory?

In the inspection before and after installation of ductile castings, a sufficient number of materials and components are selected for inspection. According to regulations, it is verified whether they are in full compliance with ductile casting specifications and are intact. For pipeline welding, the welds made by the welder shall be inspected, and the longitudinal welds of 100% processed parts shall be inspected, but the welds on the components approved by this code may not be inspected. Sample inspection of the assembly quality of threaded joints, bolted joints and other joints. Should meet the requirements of the national standard, but when the air pressure test is to be performed, all threads, bolt connections and other mechanical joints should be inspected.

The above is the relevant content of the quality inspection of ductile castings before they leave the factory. Only ductile castings that have undergone strict quality inspection are qualified ductile castings, which can show their qualified quality in use and will not cause problems during use. If you need to buy ductile castings, please choose us: Precision Machining Equipment.