Cast iron welding tablet / welding platform is a widely used in the riveting process on the basis of cast iron plate, in the working surface of the iron slag when used to clean up riveting and welding waste hole and T-slots for a fixed welding , welding tablet / welding platforms materials are generally high-strength cast iron HT200-300, the work surface hardness of about HB170-240, flat-panel welding / welding platform after two manual processing, including artificial annealing 600 degrees -700 degrees and the natural aging 2-3 the accuracy of product has become more stable, better wear resistance. 
 I plant the production of welding plate / welding mostly between 100 × 100 to 3000 × 6000 platform according to the national GB7947-1999 manufacturing standards, specifications, special specifications can be produced according to user requirements and drawings provided by custom. 
 Welding cast iron tablet / welding platforms precision: the implementation of the National Institute of Standards Metrology and Verification, respectively, 0, 1, 2, 3, four levels, the face shape is divided into rectangular, square or round, weld plate / welding work surface of the platform The processability V-shaped, T-shaped, U-shaped slots and round holes, long holes, such as to meet the production of flat work. 
 Cast iron welding tablet / welding platform plane formula: 
 000: 1 x (1 + d/1000) Level 1: 8 x (1 + d/1000) 
 0 0: 2 × (1 + d/1000) Level 2: 16 × (1 + d/1000) 
 0: 4 × (1 + d/1000) Level 3: 40 × (1 + d/1000)