... , Inconel 400, Inconel 600, Inconel 625 hot sale stainless steel pipe Grade: 321, 304, 304L, 316, 316L, 317 ... Ultrasonic/ Intergranular Corrosion, according to customers' requests. NameStainless Steel TubeItemsSquare pipes, round tubes, oval pipes, special shaped pipes, ... test, crystal rot test, heat treatment, NDT Chemical Composition of Material Material Composition201202304316430C≤0.15≤0.15≤0.08 ...