Steel Door for Building, Office and Industrial Use

High-quality Steel Doors by Triple Nine Door are designed for durability and long-term performance in buildings, offices, warehouses, and industrial environments.
Manufactured from Zinc Electro Galvanized Steel and finished with Powder Coating, our steel doors provide excellent strength, rust resistance, and extended service life.
We offer two main models: TP1 for Interior Use and TP2 for Exterior Use with Deadbolt Support for enhanced security.

TP1 – Interior steel door

TP1 Interior Steel Door is designed for indoor applications where strength and durability are required beyond standard wooden doors.
 Constructed from Zinc Electro Galvanized Steel with a total door thickness of 45 mm, it is suitable for continuous daily use.

Features & Door Structure
        • Frame: Zinc Electro Galvanized Steel, 1.6 mm thickness, standard size 2” x 4”
        • Hinges: Stainless Steel Grade 304, 3 mm thickness, corrosion-resistant and suitable for frequent opening and closing
        • Door Surface: Finished with Jotun Polyester Powder Coating, heat-cured for scratch resistance, rust protection, and non-flammable performance

Recommended Applications 
Suitable for commercial buildings, offices, equipment rooms, document storage rooms, meeting rooms, and sound-insulated areas.

TP2 – Exterior steel door

TP2 Exterior Steel Door is designed for outdoor environments requiring higher durability and enhanced security. 
Constructed from Zinc Electro Galvanized Steel with a total thickness of 45 mm, similar to TP1, but with additional hardware preparation.
Supports additional security hardware such as Deadbolt locks for increased protection.

Features & Door Structure
        • Frame: Zinc Electro Galvanized Steel, 1.6 mm thickness, standard size 2” x 4”
        • Hinges: Stainless Steel Grade 304, 3 mm thickness, rust-resistant and built for continuous use
        • Door Surface: Jotun Polyester Powder Coating, heat-cured, scratch-resistant, and non-flammable

Recommended Applications 
Ideal for building entrances, warehouses, factories, office buildings, and high-security areas requiring additional locking systems.