The TIG (or Tungsten Inert Gas) welding process uses non-consumable tungsten electrode which passes the current to welding arc. This Tungsten Inert Gas Welding process is also known as Gas Tungsten Arc Welding or else by the first letters GTAW. The tungsten and other hot materials are protected by inert gas by the cooling effect. TIG welding process was first started in the year 1931 and was used during the times of World War II.
Tension leveling is the process of pulling the strip beyond its yield point to permanently change the shape of the strip and make it flat. The material is run through an entry and exit set of bridle rolls, with the corrective leveler located between them.
At American Steel, customers often ask us about the differences between hot rolled steel and cold rolled steel. Fundamentally, there are some differences between these two types of metal. The differences aren’t related to the product specification or the grade but in the way these metals are processed at the mill.
Tube mills produce pipe and tube by taking a continuous strip of material and continuously roll forms it until the edges of the strip meet together at a weld station. At this point, the welding process melts and fuses the edges of the tube together and the material exits the weld station as welded tube. Basic components include an uncoiler, straightener, shear, forming section, fin pass section, welder, ID and/or OD scarfing, sizing section, cut off and stacker or runout table.
