Which one of the following statements is correct?
Backing strip becomes the part of weld, while the backing bar is a removable part
Backing strip is removable while backing bar forms part of the weld
Backing strip or backing bar cannot be used to support the burn through
Backing strip or backing strip can not be used for zero root face
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Answer:
Backing strip or backing strip can not be used for zero root face
Explanation:
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