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Analysis Of Advantages Of Stainless Steel Elbow Than Ordinary Elbow

Jan 15, 2018

Stainless steel bends do not produce erosion, pitting, rust, or wear. Stainless steel is still one of the most powerful materials in the metal material used in building. Because of the good corrosion resistance of the stainless steel, it enables the structural components to permanently maintain the integrity of the engineering design. Chromium containing stainless steel stamping elbow also has mechanical strength and high elongation. It is easy to process and manufacture components, and it can satisfy the needs of architects and structural designers.


All metals react with oxygen in the atmosphere to form an oxide film on the surface. Unfortunately, the iron oxide formed on the ordinary carbon steel is inherited by oxidation, which makes the corrosion expand and eventually form holes. Paint or oxidation resistant metals (such as zinc, nickel and chromium) can be used for plating to ensure the surface of carbon steel. However, as we all know, this protection is only a thin film.

In addition, after the pusher is generally a front end outer diameter to be reshaped by large plastic mold. The whole model is actually a press, with a set of moulds, 2.5 arcs, each one up and down. The outer diameter of the plastic is required for the size of the finished product. The thickness of the wall is controlled by the thickness of the wall. The thickness tolerance of the elbow and pipe are all the same, all are 12.5%. Besides chromium, alloy elements commonly used include nickel, molybdenum, titanium, niobium, copper and nitrogen to meet the requirements of various purposes for the organization and function of stainless steel stamping elbow.

Stainless steel elbow is resistant to corrosive medium corrosion medium, such as air, steam, water and other weak corrosion medium, and corrosion medium corrosion of acid, alkali, salt and so on. Also known as rust resistant acid steel. In practical applications, the steel that corroded the weak corrosion medium is often called the stainless steel stamping elbow, and the steel which is resistant to chemical medium is called acid resistant steel. Because of the difference in chemical composition, the former is not corroded by chemical medium, and the latter is generally rusty. Chromium containing stainless steel elbow also sets mechanical strength and high extensibility in one body and is easy to make parts. It can meet the needs of architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on the surface.

Unfortunately, the iron oxide formed on the ordinary carbon steel continues to oxidize, making the corrosion expanding and eventually forming holes. Paint or oxidation resistant metals (such as zinc, nickel and chromium) can be used for plating to ensure the surface of carbon steel. However, as we all know, this protection is only a thin film. The corrosion resistance of the stainless steel elbow depends on the alloy elements contained in the steel. Chromium is the basic element to make the stainless steel stamping elbow get corrosion resistance. When the chromium content in the steel reaches about 1.2%, chromium acts on the surface of the steel to form a thin oxide film (self passivation film) on the steel surface, which prevents the further erosion of the steel matrix.


Elbow pipe fittings have different production processes and processes. They need to be produced and processed according to certain conditions in processing. Different items of elbow pipes with different properties need to be noted in processing. When the alloy elbow is inverted, if the long radius alloy elbow is made, first of all, the specifications of the steel pipe must be selected first, the pipe material is put forward, and the steel pipe with quality is selected for production. The alloy elbow has a certain expansion rate. Through the theoretical calculation, the general expansion rate is between 33%-35% and backward. The general radius of expansion of the short radius 219mm is 50%. After selecting the raw materials, according to the specification of the alloy elbow, and then considering the radius of curvature, for example, the elbow of 90 degrees, the curvature of the material can be calculated to produce 90 degree elbow. It can be calculated by theoretical calculation and then cut off with the length as a ruler. Finally, the material pushing system. Because some of the elbows are not handled properly, they will be distorted, which is not allowed.