Gas Pressure welding

Gas pressure welding - There are projects in India that have got this technology implemented. Even in Hyderabad there are projects. Here is a definition of the gas pressure welding.

It is welding method directly of raw material itself to press under the condition which is before heat melting(1,200°C~1,300°C) for junction part with oxy-acetylene gas to fix on
both side rebars to connect in carrying out of rebar concrete structure building. Also, it is economic splice method than folded tying (lap splice), mechanical spiral tying(mechanical
splice) and also the strength of junction part is stronger than raw material.

※ Rebar splice is classified to folded tying (lap splice) , mechanical spiral tying(mechanical splice), compressed tying(welded splice). Folded tying (lap splice) is commonly have used as important method for rebars of small diameter before. However, Folded tying (lap splice) has irrationality such as complexity of rebar arrangement and bigger material section and also the increase of mold cost and so it is prohibited to folded tying (lap splice) for over D29 deformed rebar on Korean concrete standard specification and mechanical spiral tying(mechanical splice), compressed tying(welded splice) will be applied frequently. Therefore, compressed tying(welded splice) is stronger and economical splice method than Folded tying (lap splice) if rebar arrangement with density or rebar diameter is bigger and it is using for the rebar over D29.

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