Luke Cage vs Thing vs Colossus: Durability

When I think of Colossus body composition I think of him being solid metal. Meaning bones, organs, etc. as being steel. There has been numerous instances stating he has steel bones and the like. There is also times where he has been shown to bleed red, like when Juggernaut was recently punching him in the Amazing X-Men issue as I recall he was spitting out blood.

The two times he had his arms broken I got the impression that he was solid metal mostly because Strong Guy had to bend them back into place so Elixir could heal them when he turned human. I also think when Pete Wisdom damaged him his spine was stated as being metal iirc.

Basically the writers/editors need to get their sh!t together on this.

I don't recall Juggernaut making him bleed, but iirc Colossus mentioned that he had broken ribs, which further supports him having metal organs/bones etc.

Before he got the full power back Cain was making him spit out blood or maybe I am remembering wrong.

I also recall reading a couple of issue where it was stated that Colossus don't have vitals such as a heartbeat or pulse or something along those lines.

Cain hit him and "blood" supposedly sprayed from his mouth. But if it's blood, it shouldn't be red as his powers clearly state he doesn't even have carbon atoms in that form. It's all exchanged for metal, so if he did bleed, it'd be similar to when Shaw clapped his ears in his vision and what looked like mercury came out.

And I saw it earlier, but on the topic of Omega Red making him bleed, it looked like he was somehow turning him normal again which is the only explanation on how that should have/could have happened.