Commonly used welding methods and codes
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If it’s not perfect, I hope you can improve it! Welding method and code No. Welding method code 1 Welding rod arc welding SMAW2 Gas tungsten arc welding GTAW3 Gas welding OFW4 Gas welding GMAW5 Flux-cored wire shielded welding FCAW6 Submerged arc welding SAW7 Electroslag welding ESW8 Friction welding FRW9 Stud welding SW Plate butt weld: Flat welding 1G Horizontal welding 2G Vertical welding 3G Overhead welding 4G Pipe butt weld: Horizontal rotation 1G Vertical fixation 2G Horizontal fixation upward welding 5G Horizontal fixation downward welding 5GX 450 fixed upward welding 6G 450 fixed downward welding 6GX Tube-sheet corner joint: Horizontal rotation 2FRG Vertically fixed flat welding 2FG Vertically fixed overhead welding 4FG Horizontal fixed 5FG 450 fixed 6 FG
The information I saw said that 5G is horizontal fixed welding of pipelines. Is the information you see authoritative?