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SHIELDING GASES
Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.
Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications.
Q. Insulation for personnel protection? Insulation for personnel protection shall be provided as follows on all piping and equipment adjacent to work platforms or other operati
Improvement Of Existing Airport: The improvements that are usually needed for existing airports fall under the following categories : (a) Extension of runway to acco
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Objective: After studying tools and equipment, you should be able to list various tools, measuring equipment required in a motorcycle workshop, and identify and use ap
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