Welding technology for bending pipe

Welding gap, blunt edge size, groove angle, these three parameters are important factors affecting the quality of welding.

The welding groove is generally formed by flame gas cutting or machining. The machining groove has good quality, but the cost is high, and it is limited by various factors such as the size of the workpiece and the site; the cost of the flame cutting groove is low and convenient, and it is widely used, but the quality is often not so good. Therefore, the gas cutting groove needs to be trimmed after the gas cutting is completed. Regardless of the method used to prepare the groove, the dimensions of the groove should be within tolerance. The size of the groove mainly refers to the groove angle and the blunt edge size, and the size of the arc R is also included for the U-shaped groove.