High‑wear & Corrosion Resistant Bend
Ceramic‑lined elbow fittings deliver exceptional wear, corrosion, and heat resistance—ideal for abrasive slurry, ash, and chemical flow systems requiring directional change.
High‑wear & Corrosion Resistant Bend
Ceramic‑lined elbow fittings deliver exceptional wear, corrosion, and heat resistance—ideal for abrasive slurry, ash, and chemical flow systems requiring directional change.
The ceramic‑lined pipe elbow is a robust pipeline fitting featuring a metallic outer shell and a high-hardness ceramic inner lining (such as alumina, silicon carbide, or zirconia). This composite elbow is engineered to protect pipeline bends from severe erosion, corrosion, and heat—common in industrial directional changes.
A ceramic-lined pipe elbow is a specialized 90°/45°/180° bent pipe section with an internal alumina ceramic lining, engineered to withstand extreme abrasion in directional slurry/ash transport systems.
It solves the critical wear problem at pipe bends—where centrifugal force accelerates particle impact, causing unlined elbows to fail 5-8x faster than straight pipes.
Carbon steel (Q235/ASTM A53) or stainless steel (304/316L) elbow body
92–95% α-Al₂O₃ ceramic applied via:
15–25 MPa shear resistance (prevents delamination at impact zones)
Ceramic thickness increased to 6–10mm at outer curve (maximum particle impact zone)
Cr-Ni alloy transition zone absorbs kinetic energy
| Parameter | Standard Elbow | Ceramic-Lined Elbow |
|---|---|---|
| Service Life | 3–6 months (slurry) | 5–8 years |
| Wear Reduction | Baseline | 92–95% |
| Impact Tolerance | Cracks at 15 m/s flow | Handles 40 m/s silica slurry |
| Maintenance Cost | $12k/year (replacement) |
Use backing rings to prevent ceramic spalling during weld heat
Arrow marking must match actual flow (reversing flow cracks tiles)
Ultrasonic thickness testing every 6 months at extrados
Avoid water hammer—install surge tanks upstream
$1 ceramic-lined elbow replaces $22k in unlined elbows over 5 years (Meishan Mine data)
SHS-lined elbows maintain hydraulic efficiency (Cv value loss
Used in Three Gorges Dam slurry systems (180° elbows, 800mm dia) with zero wear failure since 2012
For slurry with >2mm sharp particles (e.g., iron ore), specify 10mm extrados thickness + impact-resistant resin buffer—extends life by 300% vs. standard ceramic elbows.
