Sand box equipped with a selection of works sand, sand box design tainted sand bottom hole, when the need to remove the frame, as long as the sand box sand release, bailey beam was slowly falling. Designed well in advance of need fall height, such as a 30cm, 30cm compaction is required sand stored in the sand box. So I did not know you understand? In fact, the production is very simple sand box. It is a steel box sets, unloading sand bottom with holes, steel box filled with sand to withstand heavy pressure from the upper beam concrete loads. Flask machining requirements 1) sand box machining allowances, according to GB / T6414-1999 mechanical allowance requirements, but also make their own determination based on casting or machining situation. 2) the processing sand box binning surface, should pay attention to the height of the wedge, sand box supply and to maintain the provisions of the design tolerances. 3) sandbox process allows a small amount of porosity, shrinkage, if necessary, Anqiu sand box, without affecting the strength and the use of conditions, welding, sand box molding line sales, after welding to be stress relieved. 4) pin, sleeve or bore holes should be processed by the jig to ensure dimensional deviation and verticality of the pattern on the support specified tolerances. 5) sand box casement sink hole and concentricity humpback hole with coaxial plug inspection, should be free to access. Sand box sales, Dragon Industrial (certified), sand box provided by the Shandong Anqiu Julong Industrial Development Limited. Shandong dragon Development Co., Ltd. (www.julongshiye.com/) Shandong Weifang, machining leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders at the dragon with the staff warmly welcome all inquiries negotiations to create a better future dragon Industry.