rdinary carbon steel is also known as iron carbon alloy. According to the high and low carbon content, the stainless steel drill tail screw is divided into low carbon steel, medium carbon steel and cast iron. Low carbon steel, commonly
rdinary carbon steel is also known as iron carbon alloy. According to the high a..
Whether or heat-resistant steel, stainless steel screws for the comprehensive pe..
In drlling silk in use process, we often find that bolt cracking phenomenon, in ..