Cast iron is a possible ground rail assembly, testing, welding and inspection of large equipment cast beam platform, flexible and convenient to use, the device can be adjusted according to the anchor position, is more conducive to the operation of the equipment. Encountered huge volume of machinery and equipment can be several or more stitching together to track, as the carrier platform. To track is the industry's indispensable equipment. To track the main purposes: based on a fixed-point devices to design, assemble into cast beam platform, not to make a large platform, which saves material costs, but also takes up very little space, high cost, mainly for large equipment assembly, testing, welding and inspection. We can agree on the specifications of the production and processing to track drawings produced according to the demand side or on both sides. Cast to track material: high-strength cast iron HT200-300, face hardness HB170-240, through artificial tempered, so that the accuracy of product stability, good wear resistance.