Technologies One side welding in the shielding gas using Internal Lineup Clamp and external automatic welding machine M-300C by CRC-Evans Photos Two sides solid wire welding by CRC-Evans operating on internal welding machine and external welding machines P-200 Photos Two sides solid wire welding by CRC-Evans based on internal welding machine and external welding machines P-260 Photos Two sides solid wire welding by CRC-Evans equipment based on internal welding machine and external single-arc welding systems P-260 and two arcs welding systems P-600 Photos Two sides solid wire welding by CRC-Evans equipment based on internal welding machine and external two-arc welding machines P-700 Photos One side solid wire welding by CRC-Evans equipment based on internal welding machine with use of external welding machines P-260 Photos One side solid wire welding on internal and external clamp using external two arcs welding machines P-700 Photos One side solid wire welding on copper backing ring with single solid wire by CRC-Evans system using external two arcs welding machines P-700 Photos