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# Rudy Altig
# What is thermite welding?
# Engineering welding techniques
# welding technology
# MIG-MAG welding technology
# TIG welding technology
# arc welding technology
# Electric arc welding technology
# Gamma ray welding detection
# Welding and metal forming
# kinetic friction welding
# Cutting and welding machines
# arc welding
# Arc welding with metal and gas
# Ultrasound welding
# Hot alloy welding
# gas welding
# tin welding
# Heat treatment after welding
# mortar welding
