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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.
An internal wheel B with 80 teeth is keyed to shaft F. A fixed internal wheel with 82 teeth is concentric with B. A compound wheel DE gear with two internal wheels, D has 28 teeth
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Consider the expansion loop displayed in the diagram below, which is part of a long pipeline. The loop is made up of a uniform pipe section and is subjected to a temperature raise
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how will you detect the depth of sea and application?
Q. Illustrate types of pipe racks? The following types of pipe racks may be required: • Interconnecting pipe rack (elevated). • Unit pipe rack (elevated). • Pipe ra
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