Our casting production has won nine years ranked first in the world, I am worthy of the world's national plan of casting a big country. But such a casting producing countries jetty port towing tank, still casting products imported from overseas. This is not due to the lack of the total cast, but the amount of high-end casting products no way satisfied the requirements of the domestic production. In fact there are more than the number of low-end casting nobody cares. Low-end casting foundry overcapacity, poor product sales line, affecting the casting company's capital returns, then the implementation of the port towing tank production companies, continue to move the company's impact on the progress of the casting. To promote the progress of the casting industry, the excess should be low-end can often be converted into high-capacity port towing tank supply, with particular attention to the progress of a certain stage of the domestic shortage of high-end features of the device, to the satisfaction of the market, thus enhancing the casting industry progress. Casting weight and size range are very wide, weighs only a few grams of the lightest and heaviest up to 400 tons, the thinnest wall thickness of only 0.5 mm, the thickness may be more than one meter in length by a few millimeters to ten meters, can meet the requirements of different industrial sectors. Casting quality has a great impact on the performance of mechanical products. For example, wear resistance and dimensional stability of the casting machine, a direct impact on the accuracy of the machine to maintain life; all kinds of pump impeller, housing and hydraulic cavity size, accuracy and surface roughness profile, directly affect the pump and efficiency of the hydraulic system, the development of energy consumption and cavitation etc; intensity combustion engine block, cylinder head, cylinder, piston rings, exhaust pipes and other castings and resistance to spalling resistance, direct impact on the working life of the engine. Marina harbor towing tank | Chen Hua machinery (certified) | harbor towing tank provided by the China Machinery Equipment Co., Ltd. Qingdao Chen. Qingdao Hua Chen Machinery Co., Ltd. (www.qdchenhua.com) is Qingdao, a leader in CNC machine tools over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chen Hua Machinery leadership in the staff warmly welcome all inquiries negotiations to create a better mechanical Chen Hua future.