Manufactured sand casting sand box with framed, generally made of metal, Yantai sand box, to enclose the sand, so that the mold after tamping to maintain a certain shape, and ... generally divided into the sand box (also known as lid box) and a lower flask (also called base box). Sand is generally manufactured in upper and lower case, respectively, sometimes also with three or more sand box manufacturing. LFC sand box layer requires better ventilation, better sealing outer requirements, sand box supply, special requirements make it very complicated structure, making trouble, as long as there is a little sloppy place, the production of the flask into production, sand box price, the production of castings will have a variety of problems, such as the collapse box, sand box model, porosity, shrinkage, etc. Therefore, the flask is one of die casting equipment disappear critical equipment. Yantai sand box, Dragon Holdings, sand box manufacturers to provide the Industrial Development Co., Ltd. Shandong dragon. Yantai sand box, Dragon Holdings, sand box manufacturer in Shandong dragon Development Co., Ltd. (www.julongshiye.com/) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Mr. Wang.