An advantage can produce castings of complex shape parts, particularly complex cavity blank (such as heating) 2 wide adaptability, commonly used industrial metal materials can be cast. A few grams to several hundred tons. Extensive three sources of raw materials. Low price. Scrap, scrap port bollard, shape and size of the chip 4 castings and parts are very close, cutting the amount of reduction, is no less cutting. Casting defects: cold resisting grain Other names: Splice (butt) port bollard price, waterlines. Features: low temperature metal flow butt fusion but the emergence of another port bollard product gaps, irregular linear, there are two non-penetrating and penetrating, there is a trend developing in the role of external forces . Reason: a molten metal pouring temperature is low or the mold temperature is low. 2, alloy composition does not meet the standards, poor mobility. 3, sub-unit filled with liquid metal, fusion is bad. 4, gate unreasonable process is too long. 5, filling speed is low or poor venting. 6, lower than the pressure. Jetty port bollard _ Chen Hua Machinery (certified) _ Port bollard provided by 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.