Well, i think the bible does warn about false converts and people going to hell in general, so yes the unrighteous "christians" are on there way to hell and will go to hell absolutely, since there is no unrighteous Christians in heaven (every real christian experiences sanctification).
The bible puts it this way:
1st Corinthians 1:6-9:
9 Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived. Neither fornicators, nor idolaters, nor adulterers, nor [a]homosexuals, nor [b]sodomites, 10 nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners will inherit the kingdom of God. 11 And such were some of you. But you were washed, but you were [c]sanctified, but you were justified in the name of the Lord Jesus and by the Spirit of our God
Also i think its funny the opening statement of this passage is:
"Do you not know?" so yeah ofcourse the unrighteous will not inherit the kingdom of God, it even says DON'T BE DECEIVED BY THIS! as if many people are going to be deceived about this.
Now, is the way of salvation through being righteous? no, the way of Salvation is Jesus Christ and he makes you righteous in this life in an on going reality of sancitifcation. Those who don't possess Christ will end up in hell, likewise they will not possess spiritual righteousness in this life, because that is the gospel, Jesus saves us from both the penalty and power of SIN, or you have never come to Jesus for salvation and will indeed end up in hell forever if that is the case.