Patent ID: 7678203

Claim:
A welding flux formulated for pipe welding or one-side welding applications including about 0.05-25 weight percent gas releasing agent, a high melting compound and a low melting compound, said weight percent ratio of said high melting compound to said low melting compound is about 1-5:1, said welding flux comprising by weight percent: Al 2 O 3 20-30% CaF 2 10-15% CaCO 3 3-12.5% FeO 0.5-2% K 2 O 0.01-0.8% Li 2 O 0.01-0.8% MgO 12-20% MnO 7-15% Na 2 O 1.5-5% SiO 2 11-23% TiO 2 0.1-2.5% ZrO 2 0.5-3.5% Mn 0-3% Si 0-3%.