The ties will be played on the weekend of May 9-12, with two games televised on BBC1 and BBC2 and also two games selected by Sky Sports.
Coral Challenge Cup Round Six Draw in full:
Salford Red Devils v Hull Kingston Rovers
Dewsbury Rams v Halifax RLFC
Warrington Wolves v Wigan Warriors
Bradford Bulls v Leeds Rhinos
Hull FC v Castleford Tigers
Catalans Dragons v Doncaster RLFC
Huddersfield Giants v St Helens
Wakefield Trinity v Widnes Vikings
