aisi 660 stainless steel bar 1. origin:Jiangsu,China 2. grade:200,300,400 series 3.Spec:2-300mm*1000-6000mm aisi 660 stainless steel bar1. ... grade: 201, 202, 304, 304L, 316L, 309S, 310S, 321, 410, 420, 430, 440C ... , 321, 316Ti, 309S, 310S, 317L, 904L, 444, 440C, 430, 410, 420, 201, 202, 2205, 2235, 2101, 301, 630, etc. aisi 660 stainless steel bar