SNeil Powell’s team were rampant‚ scoring eight tries with newly crowned World Player of the Year Seabelo Senatla scoring twice and captain Philip Snyman also adding a brace.
The Blitzboks moved to the top of Pool B with the victory after Scotland beat the USA 14-5 in their opening match.
South Africa’s Blitzboks face both the Scots and the USA later in the day.
The South African Women’s Sevens team were beaten 39-0 by New Zealand in the quarterfinals earlier on Friday.
Tries: Werner Kok‚ Philip Snyman (2)‚ Seabelo Senatla (2)‚ Rosko Specman‚ Ruhan Nel‚ Kwagga Smith
Conversions: Branco du Preez (2)‚ Justin Geduld