Butt welding they all are named with their particular shape. The joint also known as a square groove weld has many different forms in order to connect pieces of metal together and are all capable of bearing loads. There are many different types of joints such as lap joints, tee joints, butt joints, and also corner joints. Lap joints are two pieces that are end-over-end and welded together whereas butt welds are put end to end and connected that way. Butt welds are connected to each other with the thickness of the parent metal. There are many different kinds of butt welds
Mitre Corporation Mitre occupied in September 1959. After the SAGE project ended in the early 1960s, the FAA selected Mitre to develop a similar system to provide automated air traffic control. The result of the project formed the National Airspace System (NAS), that is still in use today. To support the NAS project and continual operations with the U.S. Department of Defense at the Pentagon, Mitre opened a second "main office" in McLean, Virginia. Through the 1960s, Mitre developed and supported military Command, Control, Communications and Intelligence (CI) projects, including the Airborne Warning and Control System (AWACS). Mitre also worked on a