Welding of pressure vessels

The welding process is mainly based on material, grade, chemical composition of welders, welding structure, to determine the welding performance requirements. First of all, to determine the welding method, such as manual arc welding, submerged arc welding, tungsten inert gas arc welding, gas welding and so on, the welding method is very much, can only choose according to the specific circumstances. Determine the welding method, and welding type, welding parameters vary, such as manual welding mainly includes: electrode type (or brand), diameter, current, voltage, welding power supply type and polarity welding method, number, number, test methods etc..