Reinforced backpack type cast basalt lined elbow for heavy-duty abrasive slurry and ash pipelines.
Backpack wear resistant cast basalt lined elbows are heavy-duty reinforced pipeline fittings designed for extreme abrasion and high-pressure slurry transport systems.
Unlike standard elbows, this design features an external steel reinforcement structure (backpack type) that strengthens the elbow body against mechanical stress and impact loads.
The internal cast basalt lining provides outstanding resistance to abrasion and erosion caused by high-velocity solid particles.
This combination makes it suitable for the most demanding industrial environments, including mining, power plants, cement plants and long-distance slurry pipelines.
It is especially effective in high-wear elbow positions where conventional fittings fail prematurely.
The structure significantly extends service life and reduces maintenance frequency.
A backpack cast basalt lined elbow is a reinforced pipe elbow that combines an internal wear-resistant basalt lining with an external steel reinforcement layer.
The external "backpack" structure acts as a mechanical support shell, improving pressure resistance and structural stability.
In high-pressure slurry systems, elbows are subjected to both internal abrasion and external mechanical stress.
Standard elbows may deform or crack over long-term operation under combined loading conditions.
The backpack reinforcement distributes stress and enhances structural integrity.
In high-pressure slurry systems, elbows are subjected to both internal abrasion and external mechanical stress.
Standard elbows may deform or crack over long-term operation under combined loading conditions.
The backpack reinforcement distributes stress and enhances structural integrity.
| Component | Function |
|---|---|
| External Backpack Shell | Provides mechanical reinforcement and pressure resistance |
| Steel Elbow Body | Main structural pipe elbow |
| Cast Basalt Lining | Wear and abrasion protection layer |
| Bonding Layer | Fixes lining to steel substrate |
| Property | Typical Value |
|---|---|
| Material | Fused Cast Basalt |
| Hardness | Mohs 8 – 9 |
| Density | 2.9 – 3.1 g/cm³ |
| Compressive Strength | ≥ 450 MPa |
| Water Absorption | < 0.2% |
| Working Temperature | -40°C to 350°C |
| Abrasion Resistance | Excellent |
| Chemical Resistance | Excellent |
Backpack structure improves mechanical stability.
Basalt lining protects high-impact zones.
Reduces failure in critical elbow positions.
Minimizes downtime and replacement cycles.
Cast basalt is a highly wear-resistant and corrosion-resistant lining material widely used in pipes, chutes, bunkers, cyclones, and hoppers.
Usage
Installation
Cast basalt has become the global standard for ash slurry pipelines in fossil-fuel power stations and other heavy industries. It significantly extends equipment service life in environments with severe abrasion and corrosion.
It is commonly used as a cost-effective lining material for steel, cast iron, rubber, or polyurethane equipment, offering 5–10 times longer service life than traditional materials.
What does "backpack" mean in this elbow?
It refers to an external reinforcement steel structure around the elbow body.
Where is it used?
High-pressure slurry and ash conveying systems in mining and power plants.
Is it better than standard elbows?
Yes, it provides both higher strength and longer wear life.
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