Regan Grace, Elliot Jenkins, Morgan Knowles, Ben Morris and Calvin Wellington have been called up to the Wales side.
John Kear named the quintet in a provisional 38-man train-on squad ahead of Rugby League World Cup 2017.
The squad was announced at Wales’ World Cup kit launch, which marked 100 days until their opening group match against Papua New Guinea.
WALES’ 38-MAN TRAIN-ON SQUAD:
Larne Patrick (Castleford Tigers), Zak Williams (Coventry Bears), Courtney Davies, Steve Parry, Lewis Reece (all Gloucestershire All Golds), Danny Ansell (Hunslet), Sam Hopkins (Leigh Centurions), Michael Channing, Ben Evans, Dalton Grant, Elliot Kear, Rhys Williams (all London Broncos), Josh Ralph (Newcastle Knights), Matty Barron (Newcastle Thunder), Joe Burke (Oldham), Caleb Aekins, Daniel Brown (both Penrith Panthers), Ant Walker (Rochdale Hornets), Craig Kopczak (Salford Red Devils), Matty Fozard (Sheffield Eagles), Morgan Evans, Connor Farrer, Andrew Gay, Christiaan Roets (all South Wales Ironmen), Regan Grace, Elliot Jenkins, Morgan Knowles, Ben Morris, Calvin Wellington (all St Helens), Rhodri Lloyd (Swinton Lions), Jake Emmitt, Dan Fleming (both Toronto Wolfpack), Rhys Evans (Warrington Wolves), Ollie Olds (West Brisbane Panthers), Gil Dudson, Lloyd White (both Widnes Vikings), Ben Flower (Wigan Warriors), Phil Joseph (Workington Town)
Wales will open their World Cup campaign when they face Papua New Guinea in Port Moresby on Saturday, October 28.
They will then travel to Townsville in northern Australia to take on Fiji on Sunday, November 7.
Wales’ final group match is against Ireland at Perth Rectangular Stadium on Sunday, November 12.