In general, a variety of chemicals are used in the cleaning of forged flanged pipes. They may be acidic or alkaline, with the intention of dissolving all kinds of dirt on the inner wall of the pipe.
As for how to choose cleaning agent, it depends on what kind of dust scale, for example, about the general scale, can use the concentration of 2% potassium hydroxide solution, can also use 5%-10% concentration of hydrochloric acid. As for the rust in the flanged pipe, sulfuric acid of 8%-15% concentration should be used. As for the oil scale in the oil pipeline, some small metal cleaners can be used, because these small metal cleaners have strong decontamination ability, fast cleaning speed, safe and reliable, and can replace other similar organic solvents at room temperature.
