Surely this is a rejection of a pay offer and not a vote for strike action. So it's a bit premature to talk about strikes.
I would imagine that over the next few weeks there is going to be a bit more dialogue between the unions and the company and a deal will be struck.
I think the company has been working all departments very hard and their style of management seems to be one of pushing people to the wire. The're only playing the game like the staff , by seeing how far things can be taken and when to ease up.
Sometimes people and organisations misjudge when to stop and that's when the tears and recriminations start.