Can seamless steel pipes be welded

Seamless steel pipes can be welded using the following methods
1. Compression type: Insert the piping into the pipe opening of the fitting, tighten it with a nut, and use spiral force to compress the sleeve at the pipe opening through a sealing ring, playing a sealing role and completing the connection of the piping.
2. Welding method: The end of the piping is processed with a groove, and circular welding is performed on the piping using manual or automatic welding.
3 flange type: perform annular argon arc welding between the flange and the piping, tighten with quick clamps or bolts, and seal the gasket between the flanges to complete the piping connection.