Phoebe Richards' goal three minutes from time sealed Wales' place in the EuroHockey Championships B Division semi-finals in Cardiff.
Richards ended the deadlock in a dramatic finish as Wales stretched their unbeaten run to 15 games.
Wales finish their group effort against Belarus on Wednesday, 9 August (18:00 BST) and the winners will top Pool B.
The semi-finals are on Friday, 11 August with the final the following day.
The hosts opened their campaign with a 6-1 win over Austria.
Goalscorer Pheobe Richards said: "It was a stressful game for our part.
"We didn't really play as well as we did in the previous game, but we showed a lot of resilience because we stuck to the process.
"We knew fitness wise, if we got to the fourth quarter still at a draw, then we would be fine and it showed in the end."
Captain Abi Welsford and Leah Wilkinson joined Wales hockey legend Anne Ellis on a record 138 caps.
Welsford added: "If we had written it beforehand, that might be what we did - qualify for the semi finals with a game to spare - you can't really ask for much more than that.
"But we know we've got an awful lot to work on if we want to do well in the semi finals."