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Mechanical treatment
Sand blasting treatment: Using high-pressure air to spray sand and other abrasives onto the surface of the pipe fittings to remove oxidized skin, impurities, etc., so that the surface presents a uniformly rough texture, which can enhance the adhesion of the subsequent coatings and also improve the appearance. Dry sandblasted products are misty grey; water sandblasted particles are fine and the color is bright and even.
Mechanical polishing: Through grinding, sanding and other mechanical means, relying on the polishing wheel rotating at high speed to polish the surface of the fittings, remove the roughness of the surface, improve the finish and surface quality, so that the surface of the fittings is more flat and smooth.
Drawing treatment: According to the demand, the surface of the fittings can be made into straight, messy, threaded, corrugated and swirled texture, etc., which can obtain a superb feel, delicate luster and wear-resistant surface.
Chemical treatment
Pickling and passivation: the fittings are immersed in acid solution, such as sulfuric acid, hydrochloric acid, etc., to remove the surface of the oxide skin, corrosion and welding slag and other impurities, and then passivation treatment is carried out to make the surface form a layer of dense passivation film to enhance the corrosion resistance, and the treated metal surface is generally silver in color.
Chemical polishing: put the pipe fittings into the chemical medium, so that the surface of the microscopic protruding part of the priority of the dissolution, so as to get a smooth surface, without the need for complex equipment to improve the surface flatness and gloss.
Surface coloring: Through chemical oxidation coloring method, electrochemical oxidation coloring method, ion deposition oxide coloring method, high temperature oxidation coloring method, etc., to give the fittings a variety of colors, increase the variety of products, and at the same time, improve wear resistance and corrosion resistance.

Electrochemical treatment
Electrolytic polishing: the principle is similar to chemical polishing, is the use of electrochemical action, so that the surface of the pipe fittings of the microscopic raised part of the electrolyte anodic dissolution, so as to achieve the effect of polishing, can greatly improve the surface morphology and structure of the surface layer of the actual surface area of the maximum degree of reduction, the formation of a closed, thick film of chromium oxide.
Electroplating: A layer of other metals, such as zinc, is plated on the surface of stainless steel through the principle of electrolysis to provide additional corrosion resistance protection.
Other Treatments
Original color treatment: passivation of the surface of the fittings to maintain the original matte white color of stainless steel.
Coating protection: Coating the surface of the pipe fittings with anti-corrosion coatings such as epoxy paint, polyurethane paint, etc., to isolate the air, moisture and other corrosive substances and provide protection.
Hot dip plating: pipe fittings are immersed in molten metal, such as zinc, aluminum, etc., to form a layer of metal plating on the surface, which can provide long-term corrosion protection, and the plating has good weather resistance and impact resistance.