Piping in the food and pharmaceutical industries must remain free of adhesion at all times in order to prevent bacterial growth and more. The product that goes through the pipes should flow through effortlessly, which is why smooth internal surfaces are required. Up to 2 mm wall thickness, you can often choose dairy tube in 304/316 stainless steel, which is already manufactured very smoothly. In the case of deviating, more special types of material and thicker walls, the internal Ra values are often rougher and should be reduced by grinding.
Van Geenen has 3 machines for internal pipe grinding, in the following diameter range.