South African statutes from 1912 to the present are available on Lexis (SAFRCA;SASTAT).
For information about South African legal materials, see Researching South African Law by Amanda Barratt and Pamela Snyman and/or the South African Legal Research guide by the Georgetown Law Library.
For a summary of South African law, Law of South Africa (LexisNexis/Butterworths) is a 30+ volume legal encyclopedia.
Business information: Securities filings by public companies are available on TimbukOne.