... hex,angle,channel,square solution treated finished Certificate:ISO OEM available 316 Stainless Tool Steel Bar(Round,Square,Angle,Flat,Channel,Hex) ... 2mm-300mm4. Shape Manufactured: Flat Bar, Square Bar, Round Bar, Hex Bar,Channel Bar and special Shapes.5. Length: 2 ... professional manufacturer, we can manufacture various sizes of stainless steel bars with highest quality and lowest price.