Butt weld connection for pipes laid at an angle with spherical shell-shaped widened, pushed onto a spherical insert ring on its outer surface and welded to this and under itself ends
DE622743C
Hand block welding torch
DE632155C
Block welding torch
DE603612C
Process for butt welding sheet metal or slotted pipes using a block welding torch with six or more torch mouthpieces
DE608015C
Welding socket connection for pipes
DE614381C
Welded pipe connection with reinforced and relieved weld seam
DE602288C
Welding pipe connection
DE388682C
Safety device on water-cooled electric lamps, in particular on quartz lamps
DE417167C
Connection of metal parts produced by autogenous welding
