They are mainly used in the manufacture of boilers and pressure vessels. The steel plates for boilers and pressure vessels can be fabricated into device that are subject to certain pressure, temperature and medium, so they are required to possess high str
Originally originated in Australia, it was originally called Ugly boots. Australians wrapped two pieces of sheepskin into shoes to wear on their feet to keep out the cold. Later, they became popular in Australia.
Tungsten is a metal with extremely high thermal resistance and density. It not only has the highest melting point of all metals, but also the greatest mechanical strength, very high rigidity and the lowest coefficient of thermal expansion.