I have honda city 2002 model. My power steering is having noise

Today i went to work shop and the mechanic changed 3 pumps, i am not sure that those power pump was working or not rather changing 2 pumps. He said change your main Power steering pump pipe line which goes to the so called (Kangi) which is attached with steering rod .

Just wanted to ask about good machenic and is that true that "main pwr steering pipe" making that noise as its blocked according to mehenic.

Plzz make ur reviews.