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​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. The weld area and electrode are protected from oxidation or other atmospheric contamination by an inert shielding gas (argon or helium). A filler metal is normally used, though some welds, known as autogenous welds, or fusion welds do not require it. When helium is used, this is known as heliarc welding. A constant-current welding power supply produces electrical energy, which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma. GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum, magnesium, and copper alloys. The process grants the operator greater control over the weld than competing processes such as shielded metal arc welding and gas metal arc welding, allowing for stronger, higher quality welds. However, GTAW is comparatively more complex and difficult to master, and furthermore, it is significantly slower than most other welding techniques. A related process, plasma arc welding, uses a slightly different welding torch to create a more focused welding arc and as a result is often automated.

​Cromer (/ˈkroʊmər/ KROH-mər) is a coastal town and civil parish on the north coast of the English county of Norfolk.[1] It is approximately 23 miles (37 km) north of the county town of Norwich, 116 miles (187 km) north-northeast of London and 4 miles (6.4 km) east of Sheringham on the North Sea coastline. The local government authorities are North Norfolk District Council, whose headquarters is on Holt Road in the town, and Norfolk County Council, based in Norwich. The civil parish has an area of 4.66 km2 (1.80 sq mi) and at the 2011 census had a population of 7,683.[2]

The town is notable as a traditional tourist resort and for the Cromer crab,[3][4] which forms the major source of income for local fishermen. The motto Gem of the Norfolk Coast is highlighted on the town's road signs.[5]

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