Riveting welding flat plate / riveting welding platform is a basic cast iron flat plate widely used in riveting welding process. There are holes for cleaning some iron slag and welding waste during riveting welding and T-shaped grooves for fixing weldments on the working face to prevent welding deviation caused by instability of weldments. The material is generally high-strength cast iron ht200-300, and the working surface hardness is about hb170-240. After two manual treatments, including manual annealing 600-700 degrees and natural aging for 2-3 years, the accuracy of riveting plate / riveting platform tends to be more stable and the wear resistance is better. Dalian sanding and derusting