Stainless steel elbow elbow distinguished mainly different materials, which contain the chemical composition of the surface for a long time will remain the elbow will not rust and will not corrode. According to standard production can be turned into: stainless steel elbow 1. manufacturing standards can be divided into GB, ship standard, electricity standard, water standard, American standard, German standard, Japanese standard, Russia and other standard. 2. production methods can be divided into pushing, pressing, forging, casting and so on. 90 ° stainless steel elbow pipe installation is mainly used in a connection fittings for connecting pipes at the corner. Connect two identical or different nominal diameter pipe, so that the pipeline for 90 ° turn. Stainless steel is usually based on the increase in the high proportion of Cr, Ni alloy is made, the content ratio of up to 20%. Common steel grades: 304,304L, 321,316,316L, 1Cr18Ni9Ti, 0cr18ni9, steel before several expressed numerically as Japan, the US steel representation, the last one (1Cr18Ni9Ti) for domestic steel representation. Stainless steel Features: strength, toughness index is the best variety of steel, its most prominent advantage is corrosion-resistant, paper and other corrosive chemical occasions it is necessary to use stainless steel, of course, the cost is high!