Carbon steel push elbow color process is to use a film to form the specified color. Since the alloy push elbow utilizes this layer of film that is always present, it does not fade or maintain as often as paint. The color alloy push elbow can also be shaped to have no adverse effect on the color even in sharp bends. This process is closely related to the operating time, and the color varies with time. The order of color changes is brown, gold, red, purple, and green. A major feature of the process is that its final appearance reflects the original surface of the material.

The carbon steel elbow process is to soak the alloy elbow in the solution tank. The solution preferably contains 250 g of Cr2O3 per liter, and 490 g of sulfuric acid per liter. The temperature range is 80-85 ° C. The soaking time depends on the solution. In the required color, no more than 25 minutes. The alloyed elbow is rinsed with clean cold water and then subjected to cathodic treatment at room temperature for a concentration of 250 g / 1 liter of chloric acid and 2.5 g / 1 liter of phosphoric acid for about 10 minutes, current density It is 0.2~0.4A/dm2.

The radius of curvature of the product: it can be divided into long-radius thick-walled elbows and short-radius thick-walled elbows. The long radius thick wall elbow refers to the outer diameter of the tube whose radius of curvature is equal to 1.5 times, that is, R = 1.5D. A short radius thick wall elbow means that its radius of curvature is equal to the outer diameter of the tube, ie R = 1.0D. (D is the elbow diameter and R is the radius of curvature)

Features: Anti-corrosion. Acid and alkali resistant. Long service life, reasonable price calculation, smooth surface, acid and alkali resistance, high temperature, reasonable price calculation, beautiful appearance and strong texture

Product use: For petroleum gas pipeline engineering, natural gas pipeline engineering, chemical plants, power plants, shipyards, pharmaceuticals, dairy products, beer, beverages, water conservancy, etc.