50t bollard, Chen Hua machinery (certified), bollard provided by China Machinery Equipment Co., Ltd. Qingdao Chen. Qingdao Hua Chen Machinery Co., Ltd. (www.qdchenhua.com) is specialized in the "press, ports bollard, adjustable multi-axis tapping drilling machine, CNC multi-axis drilling, milling goal" of the enterprise, the company adhering to the "integrity management , hard service "concept, offering most quality products and services. Welcome to inquire! Contact: Yuan Xi Chuan. Foundry bollards, to quality control and inspection of castings. First, the process to develop codes of practice and technical conditions from raw materials, auxiliary materials to each specific control and inspection of the product. For each procedure are strict rules and technical conditions according to the process control and inspection. Finally, the finished castings for quality inspection. Be equipped with a reasonable and appropriate detection method testing personnel. General appearance of the casting quality 1500kn bollard, available comparison specimens to determine the casting surface roughness; subtle coloring crack surface available, magnetic particle method checks. Casting internal quality bollard 150kn, available audio, ultrasonic, eddy current, X-rays and γ-rays and other methods to examine and judge. Our country is casting a big country, a serious overproduction of domestic casting, but our cast serious excess capacity refers to the country's low-end casting overcapacity 750kn bollard, China's high-end casting production is difficult to be satisfied market needs, Thus, China's casting industry needs to produce low-end castings can be converted into high-end casting production capacity, promote the progress of the casting industry in China.