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China KOWOV Ceramic Lined Pipes - Durable, High-Performance Wear-Resistant Pipes from Leading Suppliers and Factory
Structural Characteristics
Low Operating Resistance
Smooth internal surface, no corrosion, unlike seamless steel pipes with potential spiral protrusions.
Superior smoothness, clean resistance coefficient of 0.0193, lower than seamless pipes.
Low operating resistance reduces operational costs.
Excellent Wear Resistance
Structural ceramics provide wear resistance 266× that of manganese steel and 171.5× that of high-chromium cast iron.
Significantly reduces equipment wear in powder processing systems.
Over 20 years of field operation, ensuring at least 10 years of service life, reducing maintenance frequency and costs.
Corrosion Resistance
High-performance structural ceramics resist acids, alkalis, seawater corrosion, and scale formation.
Extends pipeline lifespan significantly.
Good Temperature Resistance
Operates normally from -50°C to 500°C due to stable crystalline structure.
Linear expansion coefficient of 6–8 × 10⁻⁶ /°C, approximately half that of steel pipes, indicating good thermal stability.
Main Technical Parameters
| Item | Y-ZrO / Y-TZP | Mg-ZrO₂ / M-PSZ | 90 Al₂O₃ | 95 Al₂O₃ | 99 Al₂O₃ | Si₃N₄ | SiC | Common ceramics | Carbide alloy | 45# Steel |
| Density g/cm³ | 6.0~6.05 | 5.72~5.74 | 3.45~3.55 | 3.6~3.75 | 3.9~3.95 | 3.2~3.33 | 3.15~3.25 | 3.0~3.5 | 14~18 | 7.8 |
| Hardness HRA/C | 87 | 85 | 90 | 90 | 92 | 92 | 94 | 50~60 | 70 | 36 |
| Flexural Strength MPa | 1150 | 900 | 350 | 370 | 450 | 1200 | 470 | 20~50 | 2000 | 804 |
| Fracture Toughness (KIC) MPa√m | 10~12 | 13~15 | 3.4 | 3.6 | 4.5 | 7 | 4 | -- | 20 | 101 |
| Compressive Strength MPa | 2000 | 1800 | 1700 | 2000 | 2200 | 2800 | -- | -- | 4000 | 2000 |
| Thermal Shock Resistance °C | 87 | 110 | -- | -- | 50 | 200 | 75 | -- | 500 | 500 |
| Thermal Expansion Coefficient ×10⁻⁶/°C | 9.6 | 10 | 7.6 | 7.8 | 8.3 | 3.4 | 4 | -- | 7 | 12 |
| Modulus of Elasticity GPa | 200 | 200 | 310 | 330 | 350 | 300 | 400 | -- | 600 | -- |
| Crushing Load KN (Φ6mm) | 15 | 10 | 3.5 | 3.6 | 4 | 18 | 3.5 | -- | -- | -- |
| Using Temperature °C | <160 | <1000 | <1200 | <1250 | <1500 | <1500 | <1500 | -- | -- | <560 |
| Water Absorption | 0 | 0 | 0.02% | 0.01% | 0.00% | 0 | 0.50% | 5~10% | -- | -- |
| Corrosion Prevention | Good | Good | Good | Good | Good | Good | Good | Flooey | Good | Flooey |
*Data sources: test results or issued original documents.
ANTI-CORROSIVE PERFORMANCE REFERENCE TABLE
| Media | Temperature | ZrO₂ | 99.9% Al₂O₃ | SiC | Si₃N₄ | Graphite | PTFE | Fluororubber | SS304 | SS316 | HC |
| 20% HCL | 60°C | A | A | A | B | A | A | A | C | C | B |
| 20% HCL | 95°C | A | A | A | C | A | A | A | -- | -- | C |
| 90% H₂SO₄ | 60°C | A | A | A | A | A | A | A | C | C | B |
| 90% H₂SO₄ | 95°C | A | A | A | B | A | A | A | C | C | C |
| 60% H₃PO₄ | 60°C | A | A | A | C | A | A | A | C | C | A |
| 60% H₃PO₄ | 95°C | A | A | A | C | A | A | A | C | C | A |
| 10% HF | 60°C | C | B | A | A | A | A | A | C | C | B |
| 46% HF | 95°C | C | C | A | C | A | A | A | -- | -- | C |
| 60% HNO₃ | 60°C | A | A | A | C | B | A | A | A | A | C |
| 60% HNO₃ | 95°C | A | B | A | C | B | A | A | B | B | C |
| 30% NaOH | 60°C | A | B | A | B | A | A | A | A | A | A |
| 30% NaOH | 95°C | B | B | A | C | A | A | A | A | B | A |
A ≤ 0.1 mmg/cm²/day: Can be ignored or has no corrosion, recommended for use.
B = 0.1~0.3 mmg/cm²/day: Slight or very minor corrosion, use with caution.
C ≥ 0.3 mmg/cm²/day: Significant corrosion, not recommended for use.
-- : Intense corrosion, to the extent that measurement is not possible.
Flow Characteristic Sheet of Ceramic Ball Valve
| Core Specifications | O-type ball core | V60° ball core | V45° ball core | V30° ball core |
| DN15 | 10 | 7 | 4 | 3 |
| DN20 | 18.2 | 12 | 8 | 5 |
| DN25 | 29 | 18 | 12 | 8 |
| DN32 | 47 | 30 | 20 | 13 |
| DN40 | 73 | 46 | 31 | 21 |
| DN50 | 114 | 72 | 48 | 32 |
| DN65 | 181 | 115 | 76 | 51 |
| DN80 | 292 | 185 | 123 | 82 |
| DN100 | 456 | 289 | 192 | 128 |
| DN125 | 712 | 452 | 300 | 201 |
| DN150 | 1025 | 650 | 432 | 289 |
| DN200 | 1822 | 1156 | 769 | 514 |
Application
1
Power Plants: Transporting limestone slurry.
2
Steel Plants: Conveying coal powder and fly ash.
3
Mining Industry: Transporting mineral slurry and tailings.
4
Silicon Chemical Industry: Transporting silica powder.
5
Chemical Plants: Transporting acid and alkali slurries.
6
Coal Chemical Industry: Transporting ash water, black water, coal slag, and dry coal powder.
7
Fertilizer Industry: Transporting granular fertilizers and crystalline materials.
8
Coal Washing Plants: Transporting coal slurry and coal mud.
9
Metallurgical Industry: Slag removal and boiler ash removal.
10
New Energy: Transporting lithium carbonate and lithium iron phosphate.
11
Energy and Environmental Protection: Zero discharge of wastewater and solid waste treatment.
Frequently Asked Questions
Q
What makes ceramic lined pipe better than traditional seamless steel pipe?Ceramic lined pipes offer a significantly smoother internal surface with a resistance coefficient of just 0.0193 — lower than standard seamless steel pipes. They also provide exceptional wear resistance (up to 266× that of manganese steel), corrosion resistance against acids, alkalis and seawater, and a service life of at least 10 years, reducing long-term maintenance costs.
Q
What temperature range can ceramic lined pipes withstand?Thanks to their stable crystalline structure, ceramic lined pipes can operate normally across a wide temperature range of -50°C to 500°C. The linear thermal expansion coefficient of 6–8 × 10⁻⁶ /°C is approximately half that of steel pipes, indicating excellent thermal stability.
Q
Which ceramic material offers the highest wear resistance?Among the listed materials, SiC (Silicon Carbide) achieves the highest hardness rating of HRA 94, while Si₃N₄ (Silicon Nitride) offers the highest flexural strength at 1200 MPa and excellent thermal shock resistance. Y-TZP Zirconia provides the best fracture toughness at 13–15 MPa√m. The best choice depends on the specific application environment.
Q
Are ceramic lined pipes suitable for highly corrosive chemical environments?Yes. Ceramic materials such as ZrO₂, 99.9% Al₂O₃, and SiC consistently achieve an "A" rating (≤ 0.1 mmg/cm²/day) across most tested media including 20% HCl, 90% H₂SO₄, 60% H₃PO₄, 60% HNO₃, and 30% NaOH — making them highly recommended for corrosive chemical applications. Note: ZrO₂ and some ceramics are not suitable for HF environments.
Q
In which industries are ceramic lined pipes most commonly used?Ceramic lined pipes are widely used across heavy industries including power plants (limestone slurry), steel plants (coal powder and fly ash), mining (mineral slurry and tailings), chemical plants (acid/alkali slurries), coal chemical industry (ash water, coal slag), new energy (lithium carbonate, lithium iron phosphate), and environmental protection systems (wastewater zero-discharge and solid waste treatment).
Q
What are the available ball core types for ceramic ball valves and how do they differ?Ceramic ball valves are available in four core types: O-type (full bore, highest flow capacity), V60°, V45°, and V30° (progressively reduced flow for precise throttling control). For example, a DN100 O-type core has a flow coefficient of 456, while the V30° variant is 128, allowing selection based on required flow regulation precision.