INDIA's TOP SOLUTION PROVIDER FOR ALL YOUR WEAR & STRUCTURAL NEEDS
Duroxite® 200 Pipe
Wear Pipe, Overlay Pipe, Hardfacing Pipe, Abrasion Resistant Pipe, Steel Pipe, Clad Pipe, Chromium Carbide Pipe, AR Pipe, Weld Overlay Pipe, Impact Resistant Pipe, Wear-Resistant Pipe, High-Strength Pipe, Extreme Wear Pipe, Hardfaced Steel Pipe, Heavy-Duty Wear Pipe, Industrial Overlay Pipe, Mining Wear Pipe
Duroxite® 200 Pipe is created by applying a specially formulated abrasive overlay onto a mild steel base using a traditional arc welding process. The overlay consists of chromium-rich carbides and multi-alloy complex carbides, which provide exceptional durability and wear resistance. This hardfacing pipe overlay is engineered for exceptional wear resistance, making it perfect for environments with severe sliding wear, and positioning it as an ideal abrasion resistant pipe for demanding conditions. Duroxite® 200 Pipe is available in both single and double overlay passes. Schedule 40 and Schedule 80 steel pipes, as well as tubing, serve as base pipes for creating Duroxite® 200 Pipe. It can also be fabricated into square-to-round transitions, elbows, T or Y shapes or long sweeps, offering flexibility for various industrial applications.
Key Benefits
- The wear resistance is consistent from the surface to 75% of the overlay thickness.
- The ideal carbide composition ensures a strong balance of wear resistance and uniform bonding.
- Duroxite® 200 Pipe offers a longer service life and superior wear resistance compared to traditional chromium carbide pipes.
Typical Applications
Duroxite® 200 Pipe is extensively utilized in industries such as mining, cement, oil sands, dredging, recycling, and steel production. It is commonly applied in the following specific areas:
| Mining | Slurry pumps, chutes |
|---|---|
| Cement | Chutes, slurry pumps |
| Dredging | Dredging pipes |
| Steel | Air ducts, carbon injection pipes, suction lines, troughs |
Standard Dimensions
| Diameter | Length | Other Custom Specifications | |
|---|---|---|---|
| Metric unit | Metric unit | ||
| 50 – 150 mm 200 – 600 mm 600 – 900 mm | 0.9 – 1.0 m 0.9 – 3.0 m 1.8 – 3.0 m | – All available gauges > Schedule 40 steel pipe – Lengths cut or fabricated as needed – Stainless steel and other pipe grades available – Custom diameters, lengths, and gauge sizes available upon request. – Diameters larger than 0.9 m can be fabricated from formed Duroxite® 200 plate. | |
Mechanical Properties
| Wear properties | ASTM G65 – Procedure A weight loss 2) | |||
|---|---|---|---|---|
| Number of overlay passes | Typical surface hardness1) (HRC) | Typical surface hardness1) (HV) | Surface (g max) | 75% depth of overlay 3) (g max) |
| Single pass | 57 – 60 | 630 – 700 | 0.19 | 0.19 |
| Double passes | 60 – 65 | 700 – 850 | 0.12 | 0.12 |
1) Surface hardness is measured on machined flat surface just below overlay surface.
2) ASTM G65 – Procedure A weight loss, is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus. ASTM G65-Procedure A is the most severe test method.
3) ASTM G65 – Procedure A weight loss, wear test is conducted at 75% depth of the overlay materials to ensure consistently good wear resistance from the top surface through to the depth of 75% of the overlay.
Microstructure
The microstructure of Duroxite® 200 pipes consists of primary chromium-rich carbides and refined multi-alloy complex carbides, with a hardness ranging from 2500 to 3000 HK, evenly distributed within a ductile eutectic austenite matrix. The primary chromium-rich carbides typically make up 30 to 40% of the volume, while multi-alloy complex carbides account for 7 to 10%. This composition creates a strong, wear-resistant pipe structure.
*) HK is the Knoop microhardness used primarily for very brittle materials.
Fabrication and Other Recommendations
Welding, cutting, forming and machining
For more detailed recommendations, refer to the brochure or contact your local technical support representative for further information.
Safety precautions
Welding or cutting Duroxite® products generates chemically complex and hard-to-classify gases and fumes, with hexavalent chromium being the primary toxic component. To ensure safety, it is recommended to use proper exhaust ventilation systems, fume-extraction torches as well as appropriate protective clothing and respiratory protection for operators.