How are stainless steel rods made?
Stainless steel bars and other similar material forming method, mainly divided into continuous casting, hot rolling, cold forging and several now casting and rolling, casting alone generally used for pipe, used for machining is hot forging and cold drawing.
As for the black, the general situation is all black, Michael Wong stick with pickling, peeling, grinding and other ways to achieve. A stainless steel bar with a diameter of 30mm can be continuous casting or continuous casting or hot rolling. It can be made of billets or cold drawn.
Under normal circumstances, small specifications can be pulled, the general specifications for more rolling, large specifications for forging, there is a distinction between, the boundaries are not obvious, and equipment, technology and requirements of the different. However, more and more big round billets are continuous casting, and large ones can reach 1000mm diameter.