Internal Hardfacing

Protect and enhance the longevity of crucial parts subject to fine particle abrasion, erosion, extreme temperature changes, high pressured steam and water impact.

These parts often require replacement on a regular basis resulting in downtime and reduced productivity.

We are the only company in New Zealand to offer this unique service saving customers millions of dollars in productivity downtime.

Duroweld specialises in internally hardfacing pipes. Ranging from 150mm ID to 2000mm ID.

Winstone Pulp

Before and After Internal Hardfacing

Winstone Pulp is a Pulp and Paper wood processing company. Their products are derived from renewable plantations of Radiata pine for both New Zealand and international markets.

Duroweld internally clads Winstone Pulp’s wood chip blow lines and hardfaces the edges and wear faces of their screws.

Finished Pipe Internal Hardfaced

Radar Line Bends

Before

Finished Bend

Industries that benefit most from Internal Hardfacing have pipes as an integral part of their operating system.

Cement Manufacturers – Slurry Lines

The biggest challenges that cement manufacturer face is the abrasiveness of the cement slurry. Slurry can even erode pipe where there is a bend, so everything must be particularly robust to handle the abrasiveness.

Geothermal Power Generation - Steam Lines

The pipes used in a Geothermal power generation are crucial to transport the many different stages of the process. The pipes are subject to enormous pressure.

Pulp and Paper / Wood Chip Blow Lines

Wood chip blow lines are subject to constant abrasion with high wear and maintenance costs a blow line turns resulting in mill shutdowns.

Manufacture

Bottom Bend Installed

After

Bottom Bend Installed
Internal Hardfacing Application
Finished Bend Ready for Install