PVDF Rigid Pipe | Superior Mechanical Strength & Chemical Stability
Cylex Plastics provides industrial-grade PVDF (Polyvinylidene Fluoride) Rigid Pipes, a specialized thermoplastic solution known for its exceptional mechanical strength, chemical resistance, and thermal stability. PVDF is the ideal material for high-pressure piping systems where PFA or PTFE might be too soft.
Our PVDF pipes are designed for the most rigorous environments, offering high abrasion resistance and purity, making them a top choice for semiconductor ultrapure water (UPW) systems and aggressive chemical distribution.
CYLEX supports small-batch customization, offers volume purchasing discounts, ensures rapid delivery, and provides comprehensive after-sales service guarantees.
If you require a quotation or wish to inquire about further details regarding PFA product customization and processing, please feel free to contact us at any time.
Material:
PFA (Perfluoroalkoxy Alkanes)
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Key Performance Features
High Mechanical Toughness: Stronger and more rigid than PTFE/PFA; excellent for high-pressure lines.
Chemical Resistance: Resistant to most acids, salts, and weak bases.
Fire & UV Stability: Inherently flame retardant (UL 94 V-0) and highly resistant to UV degradation.
Extreme Purity: Low extractables, perfect for semiconductor and pharmaceutical applications.
Ease of Welding: Can be joined using socket fusion, butt fusion, or IR welding for leak-proof systems.
Technical Comparison Table
Frequently Asked Questions (FAQ)
Q: Can PVDF pipes be used for hot concentrated acids? A: Yes, PVDF is highly resistant to concentrated acids including sulfuric and nitric acid up to specific temperature thresholds. Please consult our chemical resistance chart for details.
Q: What is the pressure rating for these pipes? A: Our standard PVDF pipes are rated for PN1.6 (up to 63mm) and PN1.0 (for larger diameters). Custom heavy-wall pipes can be manufactured for higher pressure requirements.
Q: How are PVDF rigid pipes typically joined? A: For industrial piping, thermal fusion (butt or socket welding) is the preferred method to ensure a homogenous, leak-proof joint that matches the strength of the pipe itself.
PVDF Rigid Pipe Common specifications
| Diameter (mm) | Diameter (inch) | Wall Thickness (mm) | Wall Thickness (inch) | Weight (kg) | Weight (lbs) | Remarks |
|---|---|---|---|---|---|---|
| 4 | 0.157 | 0.5 | 0.020 | 0.01 | 0.022 | Length into rolls PN1.6 |
| 6 | 0.236 | 1 | 0.039 | 0.03 | 0.066 | |
| 8 | 0.315 | 1 | 0.039 | 0.04 | 0.088 | |
| 10 | 0.394 | 1 | 0.039 | 0.058 | 0.128 | |
| 16 | 0.630 | 2 | 0.079 | 0.154 | 0.340 | 4 m/root (13.12 ft/root) PN1.6 |
| 20 | 0.787 | 2.5 | 0.098 | 0.236 | 0.520 | |
| 25 | 0.984 | 2.5 | 0.098 | 0.275 | 0.606 | |
| 32 | 1.260 | 2.5 | 0.098 | 0.418 | 0.922 | |
| 40 | 1.575 | 3 | 0.118 | 0.63 | 1.389 | |
| 50 | 1.969 | 3.6 | 0.142 | 0.95 | 2.094 | |
| 63 | 2.480 | 4 | 0.157 | 1.334 | 2.941 | |
| 75 | 2.953 | 3.6 | 0.142 | – | – | 5 m/root (16.40 ft/root) PN1.0 |
| 90 | 3.543 | 4.3 | 0.169 | – | – | |
| 110 | 4.331 | 5.3 | 0.209 | – | – | |
| 140 | 5.512 | 6.7 | 0.264 | – | – | |
| 160 | 6.299 | 7.7 | 0.303 | – | – | |
| 225 | 8.858 | 10.8 | 0.425 | – | – |
Comparison of Main Performance of Fluorocarbons
| Properties | ASTM Method & Conditions | POLYFLON PTFE | NEOFLON PFA | NEOFLON FEP | NEOFLON ETFE | NEOFLON PCTFE | NEOFLON PVDF |
|---|---|---|---|---|---|---|---|
| Physical Properties | |||||||
| Specific Gravity | D792 | 2.13-2.22 | 2.12-2.17 | 2.12-2.17 | 1.70-1.86 | 2.10-2.14 | 1.76-1.78 |
| Water Absorption (%) | D570/24h, 1/3"t | < 0.00 | < 0.01 | < 0.00 | < 0.1 | < 0.00 | 0.04 |
| Molding Shrinkage (cm/cm) | - | 0.02-0.05 | 0.04 | 0.03-0.06 | 0.03-0.04 | 0.015-0.020 | 0.014 |
| Contact Angle (°) | Angle with Horizontal | 110 | 115 | 114 | 96 | 84 | 82 |
| Thermal Properties | |||||||
| Thermal Conductivity (W/cm·k) | C177 | 0.25 | - | 0.25 | 0.24 | 0.20-0.22 | 0.13 |
| Linear Expansion Coeff. (1/°C) | D696 / 23-60°C | 10 × 10⁻⁵ | 12 × 10⁻⁵ (+20~+100°C) | (+50~+100°C) 8.3-10.5 × 10⁻⁵ | 5-9 × 10⁻⁵ | 4.5-7.0 × 10⁻⁵ | 4.2 × 10⁻³ |
| Melting Point (°C) | - | 327 | 302-310 | 270 | 260 | 210-212 | 173-175 |
| Melt Viscosity (P) | - | 10¹¹-10¹³ (340-380°C) | 10⁴-10⁵ (380°C) | 4×10⁴-10⁵ (380°C) | 10⁴-10⁵ (300-330°C) | 10⁷ (230°C) | 2×10³-10⁵ (210-270°C) |
| Max Continuous Use Temp (°C) | - | 260 | 260 | 200 | 150 | 120 | 150 |
| Mechanical Properties | |||||||
| Tensile Strength (Mpa) | D638 / 23°C | 20-45 | 27-35 | 19-22 | 40-50 | 31-41 | 39-59 |
| Elongation (%) | D638 / 23°C | 200-450 | 280-400 | 250-330 | 420-460 | 80-250 | 300-450 |
| Compressive Strength (Mpa) | D695 / 1% def, 25°C | 5-6 | 5-6 | 5-6 | 11 | 9-11 | 13-14 |
| Tensile Modulus (Mpa) | D638 / 23°C | 392 | 451 | 343 | 490-784 | 1029-2058 | 784-1960 |
| Flexural Modulus (Mpa) | D790 / 23°C | 490-588 | 647-686 | 539-637 | 882-1372 | 1274-1764 | 1372-1764 |
| Impact Strength (J/m) | D256 / 23°C Cantilever | 160 | Non-break | Non-break | Non-break | 133-144 | 1104 |
| Hardness (Shore) | Durometer | D50-D65 | D60 | D55 | D75 | D80 | D75-D85 |
| Deformation Under Load (%) | D621 / 100°C, 6.8Mpa,24h | 5.0 | 2.4 | 5.0 | 5.4 | 2.6 | 2.4 |
| Deformation Under Load (%) | D621 / 25°C, 13.7Mpa,24h | 7.0 | 2.7 | 3.0 | 2.3 | 0.2 | 0.7 |
| Static Friction Coeff. | vs. Steel | 0.02 | 0.05 | 0.05 | 0.06 | 0.08 | 0.4 |
| Electrical Properties | |||||||
| Dielectric Constant | D150 / 10³ Hz | 2.1 | 2.1 | 2.1 | 2.6 | 2.3-2.7 | 7.72 |
| Dielectric Constant | D150 / 10⁶ Hz | 2.1 | 2.1 | 2.1 | 2.6 | 2.3-2.5 | 6.43 |
| Dielectric Loss Factor | D150 / 10³ Hz | <1×10⁻⁵ | 1×10⁻⁵ | 6×10⁻⁵ | 8×10⁻⁴ | 2.3-2.7×10⁻² | 1.9×10⁻² |
| Dielectric Loss Factor | D150 / 10⁶ Hz | <2×10⁻⁵ | 3×10⁻⁵ | 5×10⁻⁵ | 5×10⁻³ | 1×10⁻² | 0.159 |
| Dielectric Strength (MN/m) | D149 / Short, 3.2mm | 19 | 20 | 20-24 | 16 | 20-24 | 10 |
| Volume Resistivity (Ω·cm) | D257 | >10¹⁸ | >10¹⁸ | >10¹⁸ | >10¹⁸ | >10¹⁶ | 2×10¹⁴ |
| Other Properties | |||||||
| Chemical Resistance | - | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent |
| Weather Resistance | - | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent |
| Flame Retardancy (LOI %) | D2863 / Oxygen Index | >95 | >95 | >95 | 31 | >95 | 43 |
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