Statistics show that two-thirds of rolled steel to go through the connection process (mainly welding), it can be estimated welding equipment, especially the market demand by steel production of welding materials and types.
Comprehensive statistical average of European experts on European and American countries for the welding process one ton of steel requires 3 kg deposited metal. In developing countries, due to the large amount of construction just, welding automation rate, the proportion of manual welding still higher than those effective utilization of welding materials, high welding material usage ratio.
