Gas shielded welding wire is divided into two kinds of solid wire and flux cored wire. In China, the main use of solid wire, but the flux cored wire is rapidly expanding, and has broad application prospects.

Gas shielded welding dedicated wire. According to the different manufacturing methods are also divided into solid wire and flux cored wire two broad categories. In China, the main use of solid wire, but the flux cored wire is rapidly expanding, and has broad application prospects. In Japan, the amount of solid wire is still greater than the flux cored wire, but more varieties of flux cored wire, with carbon steel, low alloy high strength steel, low temperature steel, heat-resistant steel and stainless steel And so on a variety of welding wire, also suitable for surfacing with a variety of flux cored wire. 

According to the welding method and shielding gas can be divided into TIG wire, MIG wire and mag wire. TIG wire is used with pure Ar as shielding gas, wire composition and weld composition close. MIG wire with Ar +2% O2 or Ar +5% CO2 shielding gas, mainly used for welding stainless steel and other high alloy steel. MAG wire with Ar plus more than 5% of CO2 or Ar plus 2% of the O2 shielding gas, but also can be used as a 100% CO2 shielding gas. The latter gas has a low cost and is widely used for welding carbon steel, low alloy steel and stainless steel, and also for surfacing welding. With the increase of the content of CO2 or O2 in the protective gas, the oxidation of the arc atmosphere is enhanced, and the welding wire should contain a sufficient amount of deoxidizer such as silicon and manganese.