Police spokesperson Lieutenant Rebecca Phatlane said the 60-year-old man went to investigate after he heard his dogs barking outside, Rekord North reported.
The man was overpowered by an unknown number of men and assaulted with the pipe, added Phatlane.
The suspects fled the scene with the victim’s 9mm handgun and R5 000, said Phatlane.
The man was taken to the Tshwane District Hospital for treatment.
No arrests have been made.
In a separate incident, a wheelchair-bound farmer and his family were assaulted and robbed on their farm in Mpumalanga in December last year.
“They forced my father to repeat ‘I love black people’,” Johan Lange’s (70) daughter Monique was quoted in Beeld newspaper.
Five armed men jumped over a fence from Kiepersol, attacked Lange, threw him out of his wheelchair and assaulted him on his farm at about 10pm.
Monique Lange (34), her husband Bernhard Bekker (36) and their 13-month-old son were visiting him at the time.
The attackers stole five hunting rifles and ammunition from a safe, as well as a laptop, cellphones, money and bank cards.
– Caxton News Service