... 4.Surface: Bright,Polishing,Black,Peeled 317 stainless steel bars black Product Name317 stainless steel bars blackMaterialSTAINLESS STEEL:ASTM 201.ASTM202, ASTM 301, ASTM304,ASTM304L ... ,boiler, high temperature resistant, low temperature resistant,corrosion resistant.2:Tableware, cabinet, cutting tool, boiler, auto part.3: Medical instruments, building ...