Ipad air bend internally due some over heating or some manufacturing defects.

You are not speaking with Apple. This is a user to user only forum. No one here can check anything for you. Schedule an appointment to have your iPad checked at the Genius Bar at your closest Apple store or an actual Apple Authorized Service Provider. Be advised, user damage is not covered by warranty and your iPad is clearly bent pretty badly, which is unlikely a manufacturing defect.

If you took advantage of opportunity to purchase the optional AppleCare+ plan at the time of purchase, or within the following 60-days, your iPad will be covered for both defects and accidental damage. If you have an active AppleCare+ plan, your iPad will be exchanged for an identical model iPad - the cost being limited to a small excess/deductible charge.

Your photographs illustrate damage that could not occur due to an internal fault of the iPad or manufacturing defect - but instead illustrate damage typically characteristic of the iPad either being sat upon, or carried in a rucksack or bag with other items.

Accidental damage is not covered by the warranty.

That unit did NOT bend by itself.

It is not repairable. it will have to be replaced. You will have to pay for a replacement.