sentence: Acetylene is a flammable gas that burns very hot, hotter than any other gas.
sentences_before: OFW uses a flame from burning fuel gas and oxygen to heat up the metal. This fuel gas is almost always acetylene.
sentences_after: That is why it is used most of the time. Other gases like propane, natural gas, or other industrial gases can be used too.
concept_name: acetylene
headings: Welding Energy for welding Energy for other kinds of welding
categories: Construction Technology