1. Fume extraction may be required and welding equipment should also
be free of ______.
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2. Exothermic welding material is mainly used for electrical
connectors especially in electrical ______/______, lighting protection
etc.
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3. What kind of moulds are used with the FurseWELD
process?
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4. According to THIS article, when was welding by exothermic chemical reaction originally devised? Go on to read this entire article. Follow links as time allows. |