Product
Weld Overlay Wear-Resistant Pipes
A steel outer pipe with a high-chromium wear-resistant alloy welded onto its inner wall.
Overview
Weld overlay pipes combine an outer steel pipe with an inner high-chromium wear-resistant alloy layer. The layer is a chromium carbide weld overlay, applied to the inner wall so that the bore carries the wear resistance and the steel pipe carries the structural load.
The overlay is applied by fully automated CNC internal weld overlay, which forms a metallurgical bond between the alloy layer and the steel substrate. Overlay hardness is 50–65 HRC, and both the thickness and the hardness of the layer are customizable.
The overlay is a high-chromium alloy. High-manganese steel is a different overlay alloy with a different wear mechanism; it is not a variant of this product.
Chromium carbide overlay
The inner layer is a chromium carbide weld overlay with a high chromium content.
Abrasion resistance
Hard chromium carbides in the overlay resist abrasive wear.
Impact resistance
The hard overlay is carried by a tough steel pipe body, so the composite structure resists mechanical and thermal shock as well as wear.
High-temperature resistance
The chromium carbide overlay resists high temperatures; the working temperature for a given duty is confirmed with our engineers.
Automated CNC overlay welding
Fully automated CNC internal weld overlay gives a consistent layer bonded metallurgically to the steel substrate.
Structure & shapes
A fully automated CNC internal weld overlay process deposits the high-chromium alloy on the inner wall of the steel pipe and bonds it metallurgically to the steel substrate. The overlay hardness is 50–65 HRC; thickness and hardness are customizable.
Material: High-chromium wear-resistant alloy layer (chromium carbide weld overlay) on the inner wall of a steel pipe
Specifications
| Specification | Value |
|---|---|
| Overlay material | High-chromium wear-resistant alloy (chromium carbide) |
| Overlay hardness | 50–65 HRC |
| Overlay thickness | Customizable |
| Bond to the steel pipe | Metallurgical bond with the steel substrate |
Overlay alloy comparison
Two overlay alloys for different wear modes: the high-chromium alloy used in these pipes, and high-manganese steel.
| Overlay alloy | Wear-resistance mechanism | Key strength | Suitable conditions |
|---|---|---|---|
| High-chromium alloy | Hard chromium carbides | Abrasion resistance | Low to moderate impact, abrasive wear |
| High-manganese steel | Work hardening under impact | Toughness and impact resistance | Heavy impact and compressive loading |
Swipe the table sideways to see every column.
Working conditions
These are the duties this product is built for. Final selection depends on the measured conditions at your site — send them and our engineers will review the application rather than apply a single material rule.
- Severe abrasive wear at low to moderate impact, matched by alloy selection
- Fine and coarse solids
- Heavy impact and compressive loading call for a different overlay alloy — see the comparison below
Applications
Mining & Mineral Processing
Mining and mineral processing convey highly abrasive slurries and solids — mineral slurries, tailings, concentrates and backfill. Wear concentrates where flow changes direction and where solids travel at speed, so pipe, elbow and tee selection must follow the actual operating conditions rather than a single material rule.
Typical media: Slurry, tailings, ore fines, and backfill materials.
Cement, Ceramics & Building Materials
Cement, ceramics and building-material handling moves both dry powders and granules and wet media — cement, clinker, slag and limestone powder on one side, and gypsum slurry, ceramic slurry and ceramic mortar on the other. The two states wear pipework differently and must be evaluated separately.
Typical media: Cement powder, clinker, slag, and limestone powder, together with ceramic mortar.
Power & Coal
Power and coal handling moves both dry media — pulverized coal and fly ash — and wet media such as ash slurry and coal slurry. Dry and wet conveying impose different wear and corrosion conditions, so each stream is evaluated on its own terms.
Typical media: Pulverized coal, fly ash, ash, and coal slurry.
Steel & Metallurgy
Steel and metallurgy handling moves coarse, hard and highly abrasive solids — ore fines, coke fines, sinter, slag and metallurgical dust. Wear is driven by particle hardness and shape as much as by velocity, so liner selection follows the measured duty rather than a single material rule.
Typical media: Ore fines, coke fines, sinter, dust, and slag.
Downloads
Request a quote for weld overlay pipes
Tell us the medium, particle size, velocity, pressure and the dimensions you need — unknown values may be left open for our engineering review.
Drawings can be sent to info@wearresistantpipes.com.