Stainless steel 310S is an austenitic heat resistant alloy with excellent resistance to oxidation under mildly cyclic conditions through 2000°F. Its high chromium and nickel contents provide comparable corrosion resistance, superior resistance to oxidation and the retention of a larger fraction of room temperature strength than the common austenitic alloys like Type 304.Stainless 310 is often used at cryogenic temperatures, with excellent toughness to -450°F, and low magnetic permeability. Butt-welding Elbow :In the piping system, elbows are pipe fittings that change the direction of the pipeline. According to the angle, there are three most commonly used elbows: 45°, 90°, and 180°. In addition, according to the needs of the project, there are other non-normal angle elbows such as 60°. The materials of elbows include cast iron, stainless steel, alloy steel, forgeable cast iron, carbon steel, non-ferrous metals and plastics.The ways to connect with the pipe are: direct welding (the most common way) flange connection, hot melt connection, electric fusion connection, threaded connection and socket connection. According to the production process, it can be divided into: welded elbow, stamped elbow, push elbow, cast elbow, butt welding elbow, etc. Other names: 90 degree elbow, right angle elbow, etc.