Corrosion of 304-stainless steel caused by chlorine
I have dealt with a supplier that makes protective coatings for different types of material. They provide very good technical service and have a number of locations. The products are not cheap, but they are effective. I've used them several times with different systems and under a variety of conditions and have never had any subsequent problems. You need to contact the company directly and provide them with your technical specifications. As needed, a representative can come to your site if you are located in one of the areas they serve. They have several types of products. The key is to check which ones can be used with the materials in your plant and the particular conditions under which you operate, such as the residual chlorine. Make sure you have on hand the temperature, pH, and other info that they might ask about.