For rust removal of carbon steel pipe fittings, use CY-902-1 carbon steel pickling and passivation solution. This product can remove and prevent rust. Treatment methods: CY-902-1 carbon steel pickling and passivation solution typically has two treatment methods:
1. Immersion method: Dilute the carbon steel pickling and passivation agent at a 1:1 ratio and immerse at room temperature for 30-50 minutes (up to 4 hours for severe rust) until a blackish-gray passivation film forms on the surface.
2. Circulation method: Also known as the circulating spray method, this method is mainly used for internal pipe treatment. A circulating pump can be used to circulate the pipe for 40-60 minutes to improve the uniformity of the inner wall of the carbon steel pipe fittings.

Post-rust removal treatment of carbon steel pipe fittings: No water washing is required. Allow to air dry or bake in a dry environment and store. Carbon steel pickling and passivation solution CY-902-1 is suitable for all carbon steel, steel pipes, iron parts, high-carbon steel, medium-carbon steel, and low-carbon steel. It is an alternative to rust-preventive oil. This product does not contain traditional hexavalent chromium passivation for rust prevention. It forms a dense metallic passivation film on the workpiece surface, completely isolating the metal from the corrosive medium.

preventing direct contact between the metal and the corrosive medium, thus essentially stopping the metal from dissolving and forming a passive state to prevent corrosion. It effectively protects the metal substrate, extends the rust prevention or oxidation resistance of stainless steel, can improve rust resistance by 5-20 times, increase salt spray test time, and extend the service life of workpieces.

The rust removal process is suitable for: pickling and passivation treatment of carbon steel, seamless steel, and ferrous metals (castings, forgings, sheet metal parts, etc.). It can be widely used in machinery manufacturing, the petrochemical industry, the transportation industry, metallurgy, power, textile printing and dyeing industry, publishing and printing industry, as well as military industry, mining, power plants, shipbuilding industry, medical machinery, and other industries.