Pieces of these Rods Must Also Be Provided with Carving and Bushings. You Will Also Need a Steel Cone. The Cone Shoup Havy a Diameter Larger. By the end of the Cone, You Need to Weld a Piece of the Pipe in Which Longitudinal Seams Are Cut. Thus Cracks Need to Be Wraphed with a Net. Thus, a Simple Filter Appeared.