28th September 2017, 08:03 | Huddersfield
The 26-year-old prop, who was released along with his younger brother Jordan by the Red Devils this week, has signed a three-year deal with the Giants.
He will replace former New Zealand international Sam Rapira, who is joining Toulouse.
Huddersfield coach Rick Stone said: "We're really excited to have signed Adam Walne. He's a really tough, uncompromising forward who is going to add a lot to us.
"Obviously we've lost Sam Rapira but we think Adam is going to be a really good replacement and a great fit for us.
"He's relatively young, he's mobile and he's a tough competitor that will add plenty to our team."