How to make an automoatic door

This depends on what you want to know. The standard door and non-standard door process are different.

The general production process of the anti-theft door panel: shearing - cold punching - bending - electric welding - surface anti-corrosion treatment (pickling, phosphating) - gluing and gluing - spraying - assembly - installation. >>>More

What part of the security door are you referring to? The door leaf and door frame are made of thin sheets, the inside is generally filled with honeycomb paper, and the paint on the surface is varied!

"Cat's eye" is the common name of the door mirror, which is generally installed on the iron door of the home. When someone knocks on the door, the people in the house can see the outside through the door mirror, which is very clear when looking inside the house through the door mirror, but when looking inside the house from the outside, it becomes very blurry. So it allows people in the house to distinguish whether the people outside are acquaintances or robbers.

According to national standards. The steel plate of the door frame requires the above thickness. Above the steel plate of the door body. >>>More