|
|
 |
|
 |
 |
| |
Fireproof door was manufactured by welding its corner section
after it was roll-formed. But nowadays the production process
changes into an all-in-one process(no need to weld) by using
a press mold.
Press Mold Type enables the cost of production to decrease
very much and doors with a beautiful external appearance to
be manufactured.
Fireproof Door Frame & Panel
Extra-large all-in-one Steel Mold(the
first product developed in Korea)
|
|
|
 |
 |
 |
 |
|
 |
|
|
 |
|
|
|
