Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non-consumable tungsten electrode to produce the weld.he use of any shielding gas containing an oxygen compound, such as carbon dioxide, quickly contaminates the tungsten electrode, making it unsuitable for the TIG process. In 1953, a new process based on GTAW was developed, called plasma arc welding.
Another cause of ridges on fingernails is lack of moisture. If your nails are ridged or cracked, massaging the nails or cuticles with a moisturizing cream or oil can be very beneficial, as can increasing the amount of water you drink.
Ridges in fingernails. Vertical ridges sometimes appear along the length of the fingernails. Sometimes marks, discoloration or pits or grooves on a fingernail, such as those that run from side to side (known as Beau's lines), can be an indication of a nail injury or a health problem.However, in the case of vertical ridges, there is normally no reason to be concerned.These ridges look and feel like raised lines, and they run from the cuticle at the base of the fingernail to the tip. These ridges are not usually a sign of injury or a health problem but are a harmless result of ageing.ometimes marks, discoloration or pits or grooves on a fingernail, such as those that run from side to side (known as Beau's lines), can be an indication of a nail injury or a health problem. However, in the case of vertical ridges, there is normally no reason to be concerned.