Groove technology for double-faced forming of one-side welding of angle joint butt seam

The invention provides a groove technology for double-faced forming of one-side welding of an angle joint butt seam. A U-shaped plate is arranged on one side of a vertical plate. The U-shaped plate and the vertical plate are perpendicular to each other, and a D-shaped structure is formed. A pair of half-U-shaped grooves are symmetrically formed in the sides, facing the U-shaped plate, of the upperend and lower end of the vertical plate. A pair of half-V-shaped grooves are symmetrically formed in the two ends, facing the vertical plate, of the U-shaped plate. The edges of the bottoms of the half-U-shaped grooves of the vertical plate are in butt joint with roots of the half-V-shaped grooves of the U-shaped plate. Welding filling cavities are formed between the half-U-shaped grooves of thevertical plate and the half-V-shaped grooves of the U-shaped plate. According to the groove technology for the double-faced forming of the one-side welding of the angle joint butt seam, the grooves are simple in form, easy to