90mins Fire Rated Time calcium silicate expanded exterior mgo board fireproof steel and wood door foam door core

Onekin door core board for steel door adopts magnesium oxide as leading materials, mixed with non-organic high strength adhesives and chemical additives proportionally. The door core board for steel door is natural perlite ore and being heated under 1300°c to achieve instant expansion and the formation is hollowed cellular granulocyte. 

 Specification of  Onekin door core board for steel door

special specification can be made according to your requirements

 Better Performance:

Test data of  door core board for steel door   

Processing and packing of the door core board for steel door

1, Raw materials choosing of door core board for steel door: adopting expanded perlite or mgo as main raw material, suitable material as framework material and adhesion agent met the testing requirements as binding material.

2,Mixing the materilas of the door core board for steel door: firstly adding binding agent into perlite or mgo and then stir evenly by tailor-made blender

3,Pressurization of door core board for steel door: put the ready mixed materials into mould or door core framework, then pressurizing.