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Oxy-acetylene welding is categorised in

Oxy-acetylene welding is categorised in Correct Answer Gas welding

Explanation:

Oxy‐fuel Gas Welding (OFW):

  • In Oxy-fuel welding, the heat source is the flame produced by the combustion of fuel gas and oxygen
  • This welding technique has largely been replaced by other processes but it is still popular because of its portability and the low capital investment
  • Acetylene is the principal fuel gas employed
  • Three types of flames can be obtained by varying the oxygen/acetylene (or oxygen/fuel gas) ratio named oxidizing, reducing and neutral flame

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