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Welding Down Meaning. The 3G test position covers the 1G 2G and 3G positions. This happens due to the molted metal flowing downward of the joint.
Cracking Down On Weld Cracks from www.thefabricator.com
Looking for downhand welding. We at ScienceStruck have provided a comprehensive welding symbols chart that will help you communicate better with your welder or fabricator. The 3G test position covers the 1G 2G and 3G positions.
Essentially they are a set of symbols used as a shorthand code for describing the type of weld its size and other processing and finishing information.
Meaning you start on the bottom of the plate welding upward to the top. Downslope allows the welding current to be reduced gradually allowing the metal to cool more slowly than it would without downslope control. Also welding all around a specific joint is represented by a circle at the arrow junction. But if it is placed above the line then it is supposed to go on the opposite side of the joint.
