The corrosion resistance of the steel elbow pipe fittings depends on the alloy elements contained in the steel. Chromium is thesteel elbow pipe fittings was the basic elements of corrosion resistance, when the Cr content in steel reached 1.2%, chromium and the corrosive medium in the role of oxygen, on the surface of steel formed a layer of very thin oxide film (self passivation film), can prevent the steel matrix further erosion. Steel elbow pipe fittings will not produce corrosion, pitting, corrosion or wear. Stainless steel is still one of the highest strength materials used in building materials.
Because the stainless steel has good corrosion resistance, so it can make structural components to maintain the integrity of the project design. Chromium stainless steel stamping elbow is set high mechanical strength and extensibility in a body, easy manufacturing and processing of parts, accounting personnel to meet the architects and structural design. In addition to chromium, the commonly used alloy elements are nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., in order to meet the requirements of various uses for stainless steel stamping elbow organization and function.
Hemming and sealing bottom of fitting, increase pipe end strength to the outside of the tube or inside hemming or pipe end sealed tube; change the cross-section of the pipe fittings, according to the requirements, circular section variable is square, oval, polygon, etc.; with flange and circular edge of the pipe, the former refers to at the end of the pipe to the medial or lateral convex, while the latter refers to in the side of the circumference of the pipe to form a bulge or groove of pipe. The technical requirements of these kinds of pipe fittings are to be carried out under certain technical requirements, and need reasonable processing methods, and reasonable production and processing of the methods and processes.
Source: Zhejiang Yaang Pipe Industry Co., Limited (www.yaang.com)