ABOUT

BUSINESS DOMAIN

Since our founding, DHF has been focused on applications using induction heating. It currently has businesses in six domains: the Pipe Division, Surface Treatment Division, Equipment Division, Reinforcing Steel Bar Division, Bi-met Division, and Plant Engineering Division.

Pipe Division

Bending
Steel pipe bending, small-radius pipe bending, thick-wall pipe bending, shaped steel bending, and special materials bending technologies
Lining
Inner, outer, and inner-outer combined polyethylene linings, other rust/corrosion preventing coatings
Prefabrication
Prefabrication of piping materials, piping design
Official Demand
(Piping materials, products for repair) Flexible pipe (DHF-Y joints), non-uniform steel pipe, anti-corrosion steel pipes for water supply and sewerage, inner bands for waterproofing and repairs, leak testing

Surface Treatment Division

Heat Treatment
High/medium-frequency heat treatment/high-frequency hardening.
Rolls
Integrated production of rolls/rollers, polishing, and recycling
Thermal Spray Coating
Spray coating of rolls and various machine parts

Equipment Division

Induction heating technologies
Heating equipment R&D and testing of heating equipment for customized applications
(high-frequency power supply units, slim riser etc.)
Plant Maintenance Service
Induction bolt heating, Induction tube shrinking and Induction heating equipment for resin peeling

Reinforcing Steel Bar Division

Mechanically-coupled rebar
T-head construction method steel reinforcement bars (rebar).

Bi-met Division

Composite metal products
Boiler tubes and panels, bimetal pipes, bimetal cylinders

Plant Engineering Division

Design
Design, detailed piping design, piping production design