The security industry has developed for thirty years, which has becomes a part in people’s life. What is cleaning and inspection of castings? Cleaning and inspection of castings are the processes through which products called castings are made neat and then subjected to examination before they are applied to particular use. Without cleaning and inspection of castings, the castings can fail when used for certain purposes. To avoid the failures, castings must be cleaned and inspected. Many buildings and constructions have failed today because proper inspections were not conducted on the metallic materials before their use. Through cleaning inspections, dimensions and other important factors are taken into considerations. Get unprecedented visibility into your worksite with real-time data from Spot-r. Uncover insights about all your resources so you can ensure site workplace safety, increase productivity, and optimize manpower and equipment usage, while automating time-consuming tasks, such as manual headcounts and daily reporting. Friction welding utilizes the principle of frictional heating, by to imposed load between the parts that will weld, and make it produce mechanical friction campaign, between welding material contact surface, just produce heat, utilize this heat to make material reach thermoplasticity state, then upset forms welding point rapidly.Because friction welding has solid State Welding, weld seam, for forging tissue, is easy to obtain and the equicohesive joint of mother metal; Can realize the welding between different materials; The advantages such as welding process is controlled, efficient energy-saving, so be widely used in the axle classes in field such as aviation, military project, automobile, oil and the welding of other class parts. In total, 212 operations were carried out during the war, from which 121 Lancasters did not return. Another 29 aircraft were lost due to operational crashes or accidents. This report comes after the presidency was asked to investigate the status of sanitation in the country after communities in Khayelitsha and Rammulotsi complained over toilet facilities in 2011. These toilet facilities, or lack thereof, were found by the South African Human Rights Commission and the Cape Town High Court to be violating these communities’ human rights. However casting all our true history aside my own “feeling” is that the real reason behind the secrecy and censorship of this ancient giant race is that they simply do not want the average American or World public from recognizing that this race is not just our ancestors but the key to unlocking a future free from warfare, financial tyranny and perpetual enslavement.