Pipe protection unit in work machine

A pipe protection unit in a work machine including a base machine and a work attachment supported by the base machine, the pipe protection unit comprising:

• at least one inner low-pressure pipe which is a hydraulic pipe disposed along an attachment side surface which is one of a left side surface and a right side surface of the work attachment;
• at least one outer high-pressure pipe which is a hydraulic pipe disposed along the attachment side surface at an outer position than the at least one inner low-pressure pipe, the at least one outer high-pressure pipe having an outer diameter larger than an outer diameter of the at least one inner low-pressure pipe;
• and
• a cover plate which is a plate that is disposed along the attachment side surface so as to be interposed between the at least one inner low-pressure pipe and the at least one outer high-pressure pipe and is supported by the work attachment, the cover plate covering at least a part of the at least one inner low-pressure pipe.