Start using the welding steel structure industry ceramic liner from qing root process has certain advantage in the cost of production:3, the cost of productionGenerally, the use of ceramic liner from qing root process cost is about 50% of the cost of carbon arc air gouging clear root.And while the per meter of fusion weld root process than clear root process pay more free about 0.5 hours.With an annual output of 40000 t steel structure enterprise as an example, the annual primary and secondary testing penetration welding seam are tens of thousands of meters above.At 000 m 25 such weld calculation, the use of ceramic liner can save about 12 to 500 hours.