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Location:Home > Product & Services > Core Components - Rollers

DHHI has been dedicating to the development of service-purpose core components for metallurgical, energy sources and ship industries, etc. It developed various core components for 1.5-6mw wind turbines successively, ship crankshafts of MAN and WARTSILA series, high-end castings for large thermal power plant, hydropower plant and nuclear power plant, laminar spray welded roller, galvanized sink roller as well as furnace roller for cold rolling mill, etc. DHHI is powerful in technical capacity, and the products cover many types and specifications and are popular among the customers both at home and abroad.


Laminar Spray Welded Rollers

The flame spray-welding equipment developed independently by DHHI can apply a layer of hard metal alloy with a certain thickness on the roller surface to improve the wear, heat and oxidation resistance of the laminar cooling roller table. In recent years, DHHI completed the preparation and assembly of more than 20000 pieces of hot-rolled laminar rollers and finished over 20 production lines, of different specifications, and the products are sold to the large iron and steel making enterprises both at home and abroad and are widely recognized by the customers.

Business Contacts

Name:Yu Li

Telephone:86-411-86852376

E-Mail:yuli@dhidcw.com

Galvanized Stablizing Rollers & Sink Rollers

DHHI imports the world advanced JP8000 supersonic-speed flame spraying equipment from Praxair USA. The sink rollers and stabilizing rollers prepared by DHHI have many advantages such as compact, low porosity and high bonding strength, etc., with a capacity for spraying over 200 sets of rollers every year. The groove form of sink rollers designed independently by DHHI in combination with special sealing process effectively improves the wear and corrosion resistance of the sink rollers and stabilizing rollers.

Business Contacts

Name:Yu Li

Telephone:86-411-86852376

E-Mail:yuli@dhidcw.com

Pincher Rollers for Coiler

The pincher rollers for coiler of hot rolling mill are critical components for conveying the strip steel to the coiler. To meet the service condition of pinch rollers and reduce the time of shutdown for replacement, it’s necessary to apply a layer of hard material with a certain thickness on the roller surface by built-up welding. DHHI has powerful technical capacity in this aspect and uses special treatment technology to endow the roller with advantages, e.g. high hardness, wear, impact and fatigue resistance, free of dead burning, etc.

Business Contacts

Name:Yu Li

Telephone:86-411-86852376

E-Mail:yuli@dhidcw.com

Cold-rolled Furnace Rollers

DHHI imports the 7700Plazjet supersonic-speed plasma spraying equipment from Praxair USA and the world advanced CCDS-2000 detonation spraying equipment from Russia and is capable of spray coating and coating processing of various medium and high temperature furnace rollers for cold rolling production line in the metallurgical field, with over 300 pieces of furnace rollers sprayed every year.

Business Contacts

Name:Yu Li

Telephone:86-411-86852376

E-Mail:yuli@dhidcw.com

Cold-rolled Tension Rollers

DHHI has complete procedures for and is capable of processing cold-rolled tension rollers. It is equipped with special equipment for CNC material cutting, plate coiling, welding, NDT, heat treatment, machining and hot spraying and can manufacture the roller with a diameter up to Φ1800mm, with a capacity of producing over 600 pieces of tension rollers (with coating) every year.

Business Contacts

Name:Yu Li

Telephone:86-411-86852376

E-Mail:yuli@dhidcw.com

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