Crazy WeldingSecretly tell you, the secret welding operation of TIG white steel pipe October 10, 2021 - Leave a Comment Facebook Twitter Pinterest Crazy WeldingSun, October 10, 2021 2:48pmURL:Embed:In the video, there are some welding secrets of argon arc welding “priming” filling, the second layer of “priming” filling, and the third layer of “covering” filling Facebook Twitter Pinterest