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.
Nail ridges are raised lines in the nails of the fingers or toes that may run vertically along the nail or horizontally across the nail. Nail ridges typically develop in adulthood and may become more pronounced with age. However, nail ridges can also develop more rapidly and may arise from a variety of causes, including localized infection or systemic illness, disease, or poisoning.