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.
Lengthwise grooves or ridges may indicate a kidney disorder and is associated with aging. An iron deficiency may also cause ridges. Brittle nails signify possible iron deficiency and thyroid problems, impaired kidney function and circulation problems. Flat nails can denote Raynaudâs disease. Yellow nails can indicate internal disorders long before other symptoms appear. Some of these are problems with the lymphatic system, respiratory disorders, diabetes and liver disorders. White nails indicate possible liver or kidney disorders and /or anemia. Dark nails and/or thin, flat, spoon-shaped nails are a sign of anemia. Deep blue nail beds show pulmonary obstruction such as asthma or emphysema. Nail bleeding is a sign of rheumatoid arthritis. Pitted red-brown spots and frayed and split ends indicate psoriasis; Brittle, soft, shiny nails without a moon may indicate an overactive thyroid.