1.Steel fire door is made of steel material frame, door frame and door leaf panel, if the filling material within the door leaf, the fire insulation filling non-toxic harmless to the human body, and fire protection of hardware fittings has certain fire performance of the door.
2.Door leaf is filled new environmental inflaming retarding and insulating material, shaping by environment adhesive press. After deoil, derusting, phosphorization and passivation,the surface is spray-paint and heat thermal transfer.