Pipes

Pipe Duroxite® 100

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Specifications

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General description of products

Duroxite® 100 pipe is manufactured by depositing wear-resistant, chromium-rich materials onto a mild steel substrate using a traditional arc welding process. Welded welded pipe is designed with extreme wear resistance capability to operate in the harshest conditions. Duroxite® 100 pipe is available with two or more liner passes. Schedule 40 and Schedule 80 steel pipes and tubes can be welded. The overhead pipe can be made in the form of transitions from square to round, elbow, T- or Y-shaped or in the form of long sweeps.

Key benefits

  • The same wear resistance is guaranteed from the surface to 75% of the lining
  • Optimum carbide composition to ensure a good combination of wear resistance and uniform bond

Typical programs

Duroxite® 100 pipe is widely used in the mining, cement, oil sands, dredging, refining and steel industries. Some specific programs include:

Mining industry, cement, oil sands Manure pumps, gutters</ td>
Dredging Dredging pipes
Recycling Glasses
steel Air ducts, carbon injection pipes, suction lines, gutters

For more application information, see the Duroxite® product brochure.

Standard plate sizes

DIAMETER
LENGTH
METRIC UNIT METRIC UNIT OTHER SPECIAL FEATURES
50 – 150 mm
200 – 350 mm
350 – 600 mm
600 – 900 mm		 0.9 m
0.9 – 3.0 m
0.9 – 6.0 m
1.8 – 6.0 m		 – All available calibers > Schedule 40 steel pipe
– Cuts or fabrication as needed
– Stainless steel and other types of pipes are available
– Special diameters and sizes are available upon request
– Diameters greater than 36 inches can be made from Duroxite® 100 molded plate

Upon request, it is possible to manufacture plates of other sizes and thicknesses to order.

Mechanical properties

WEAR PROPERTIES
ASTM G65 – WEIGHT LOSS BY PROCEDURE A 2)
NUMBER OF OVERLAY PASSES

TYPICAL SURFACE HARDNESS 1)

(HRC)

TYPICAL SURFACE HARDNESS 1)

(HV)

 SURFACE
(G MAX.)		 75% OVERLAY DEPTH 3)
(G MAX)
Double or multiple 59 – 62 675 – 750 0.18 0.18
1) Surface hardness is measured on a machined flat surface just below the overlay surface.

2) ASTM G65 – Weight Loss Procedure A is a standard test for measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus. ASTM G65-Procedure A is the most stringent test method.

3)  ASTM G65 – Weight Loss Test Procedure, wear is carried out at 75% of the depth of overlay materials to ensure consistently good wear resistance from the top surface to the depth of 75% of the overlay.

Microstructure

The microstructure of Duroxite® 100 pipe consists of a large proportion of extremely hard chromium-rich M7C3 primary carbides with a typical hardness of 1700 HK4) uniformly distributed in a ductile eutectic austenite matrix. The volume fraction of primary carbides is maintained in the range of 30 to 50% to provide a good combination of wear resistance and uniform bonding.

Hard Steel Ind.

4) HK is the Knoop microhardness, which is used mainly for very brittle materials.

Manufacturing and other recommendations

Welding, cutting, forming and machining

Workshop recommendations can be found in the Duroxite® overlay brochure or you can contact your local technical support representative for more information.

Safety equipment

When welding or cutting Duroxite® products, fumes are generated containing harmful vapors and gases that are extremely complex in chemistry and difficult to classify easily. The main toxic component in the fumes and gases produced in the process is hexavalent chromium. Adequate exhaust ventilation equipment and fume extraction flares are recommended, as well as suitable protective clothing and respiratory protection for operators.