Open Root Pipe Welding

Leave the puddle and return the electrode to the gap. Move the electrode down to the joint with the movement of the half moon

I will stop weaving at 1 am. Concentrate the arc in the front molten pool and move the pipe joint down until it reaches the 5 o'clock position

Always start and stop pipe welding whenever it is done on the side wall - never in the gap. Start the arc, wait for the molten pool to form, then move slowly and gently through the open root to the opposite side. Please slowly bend along the open root of the first part of the pipe until you need to change your position. Consider the pipe according to the dial of the clock and divide it into several parts. Start at 12 o'clock, work at 3 o'clock, then stay comfortable and stop to prepare for the next part, repeat this process until welding is over. When you go, make sure that you tie all your tacks correctly - if you have to do it several times, shift the collocation instead of placing them at the same point around the pipe

What happens when pipe welding is done? What if your weld is not strong enough or not good enough? You need to repair the welded part, but this seems to be a very difficult job. In fact, the repair of open root welds is quite easy. You do not have to worry about the whole pipe. It only depletes defects. If you return parts to the same size and shape as the original groove, open the route again and then re-weld the part to normal parts.

Pipe welding usually uses a relatively thick heavy material, and the open nature of the weld means that if it is not penetrated properly it may be poor. It may be devastating to leave a weld insufficiently welded in a welding operation of a rugged industrial pipe. You need to ensure full penetration, but considering that you rarely weld from the inside and the outside of the pipe, you solve this potential problem by using groove welding can. The position of 5 G is similar to 1 G, but because the pipes are arranged horizontally except that they are fixed and can not be moved. This requires soldering various places including overhead. Vertical up / down - both directions are used for this position - are ASME and API specification technology.