HDPE SDR Pressure Pipes
Standard Dimension Ratio (SDR) high-density polyethylene pressure pipes. Engineered for municipal water mains, fire lines, gas transport, and chemical discharge lines.
Solid-Wall High Pressure Pipelines
HDPE SDR Pressure Pipes are the premier solution for municipal water systems, boasting extreme pressure capacity, high flexibility, and leak-free fusion joints.
Manufactured from premium-grade virgin PE100/PE80 polymers, they are resistant to high impacts, shifting soil geology, and severe corrosive actions. Available in solid black or with co-extruded blue stripes for drinkable water systems.
Size Range
OD 20 mm – OD 1200 mm+
Pressure Ratings
SDR 11 (PN16), SDR 17 (PN10), SDR 21 (PN8) & more
Standard Colors
Black / Black with Blue Stripes
Fusion Methods
Butt Fusion, Electrofusion, Compression
Benefits and Features
Safe for Portable Water
Certified non-toxic compound. Maintains clean water quality during transport, completely free of heavy metals or biological build-up.
High Impact & Deflection
Incredibly tough yet flexible design allows it to navigate terrain variations and withstand water hammer pressures without cracking.
Zero-Leak Homogeneous Joints
Heat-fused butt welds or electrofusion sleeves link individual sections into one continuous line, eliminating joints leaks.
Complete Fittings Selection
We supply a massive selection of high-pressure HDPE pipe fittings to ensure seamless transitions, connections, and system integrity:
- Butt Fusion Series: Molded or fabricated elbows (45°/90°), Tees, stub ends, and concentric reducers.
- Electrofusion Series: High-integrity copper-coil embedded couplings, tees, saddles, and reduction cuffs.
- Compression Fittings: Non-loose component quick-connect male/female adaptors and couplers for quick field assembly.
SDR Pressure Ratings & SDR Chart
Standard Dimension Ratio (SDR) defines the relation between the pipe’s outer diameter and wall thickness. Lower SDR numbers denote thicker walls and higher pressure capacities.
| SDR Class | Wall Thickness Class | Nominal Pressure (PN at PE100) | Typical Application |
|---|---|---|---|
| SDR 9 | Thickest Wall | PN 20 (20 Bar) | Extreme pressure industrial discharge / mining lines |
| SDR 11 | Thick Wall | PN 16 (16 Bar) | Municipal water mains, high-pressure fire systems |
| SDR 13.6 | Standard Wall | PN 12.5 (12.5 Bar) | Standard water supply distribution pipelines |
| SDR 17 | Standard Wall | PN 10 (10 Bar) | Agricultural irrigation, sewage force mains |
| SDR 21 | Thin Wall | PN 8 (8 Bar) | Gravity sewers, low-pressure irrigation systems |
| SDR 26 | Thinest Wall | PN 6.3 (6.3 Bar) | Cable conduits, low-pressure vent conduits |
Understanding Standard Dimension Ratio (SDR)
A lower SDR ratio results in higher pressure resistance but smaller internal bore. Standard PE100 resins provide higher pressure resistance at thin walls compared to older PE80 materials.
Butt Fusion Welding Procedure
Proper jointing is critical for the high-pressure capabilities of SDR pipelines. Butt fusion welding uses precise heating and pressure alignments.
Step-by-Step Jointing Guidelines
- Clean Ends: Wipe the pipe ends inside and outside to thoroughly remove all dirt, oil, and moisture.
- Square Facing: Secure pipes in the machine alignment clamps and square the ends using the facing planner tool.
- Check Line-up: Inspect the pipe matching to ensure the ends meet square and parallel over the entire surface area.
- Heater Plate Fusion: Place the clean heater plate between the ends. Hold the pipe faces against it with minimal contact pressure, letting them absorb heat and soften.
- Joining: Withdraw the heater plate and quickly bring the hot pipe ends together with uniform fusion pressure, forming a continuous double bead around the joint ring.
- Inspection: Allow the joint to cool completely under pressure before releasing clamps. Inspect the weld bead for structural integrity.
Ready to upgrade your piping infrastructure?
Contact 5Dragon Construction Corp. today for pricing, technical datasheets, and availability.