Manufacture of cast iron inspection plate / test platform, according to the national GB7947-1999 standard, Accuracy class 0, 1, 2, 3, level and fine planing, made of the reinforcement plate and box type, cast iron inspection plate / test platform face has a rectangular square or round. 
 The inspection plate / test platform face scraping process, the work surface can be processed V-shaped, T-shaped, U-shaped slot and round holes, long holes, etc.. Inspection plate / test platform is made of high strength (HT200 300). Face hardness HB170 ~ 240. After two aging treatment (artificial aging and natural aging of 2 to 3 years), so that the accuracy of the product stable and good abrasion resistance. 
 Inspection plate / test platform specifications: 
 The ① 100mm × 200mm ------------- 400mm × 400mm precision is 0, 1, 2. 
 ② 400mm × 600mm ------------- 1500mm × 2500mm accuracy of 1, 2, 3. 
 ③ 1500mm × 3000mm ---------- 2000mm × 3000mm accuracy of 2, 3, fine planing. 
 ④ 2000mm × 4000mm ---------- 3000mm × 10000mm/4000mm × 8000mm precision 3 and precision planing.