B-2 alloy is a solid solution strengthened nickel-molybdenum alloy commonly used in extreme reduction conditions. Compared to the previous alloy B (UNS N10001), alloy B-2 significantly reduces the content of carbon, silicon and iron. Compared with B alloy, B-2 alloy is less prone to corrosion in the welding zone in the welding state. Controlling other alloying elements, such as iron and chromium, solves potential problems with molding and forming. The strict chemical control of B-2 alloy during the production process makes it used in the welded state and less susceptible to stress corrosion cracking under many conditions.Socket Welded Tee is a kind of high pressure tee pipe connecting accessory which is mainly formed by round steel or ingot die forging blank and then machined by lathe. It is mainly used in petrochemical industry, medicine and health, electric power, aerospace, military, fire protection, metallurgy, shipbuilding, gas, nuclear power, and environmental protection and other departments and fields requiring high pressure and precision size.