In modern construction and renovation, selecting HDPE pipe dimensions is crucial. HDPE pipe (high-density polyethylene pipe) is widely used due to its superior performance.
There are a few things you must know about HDPE pipe dimensions. This article will provide some basic information about HDPE pipe dimensions.
Common HDPE pipe dimensions range
Small diameter pipes (home improvement/water supply)
DN15-DN200: corresponding to outer diameter 20mm-225mm (e.g. DN20 ≈ 25mm outer diameter, DN100 ≈ 110mm outer diameter)
Typical models: DN15 (4-branch pipe), DN25 (1-inch pipe), DN50 (2-inch pipe), etc.
Medium and large diameter pipes (municipal/drainage)
DN200-DN1200: outer diameter 200mm-1425mm (e.g. DN300 ≈ 300-347mm, DN800 ≈ 813-955mm)
Double-wall corrugated pipe: Common sizes range from DN110 (inner diameter 110mm) to DN1200 (inner diameter 1200mm)
Key parameters and standards
Wall thickness and ring stiffness (SN grade)
SN4: Wall thickness 2-6.8mm (e.g., DN200 wall thickness 2mm, DN500 wall thickness 3-6.8mm).
SN8: Wall thickness 30%-50% thicker than SN4 (e.g., DN800 wall thickness 10.4mm, DN1200 wall thickness 14.4mm).
Length specifications
Standard length: 6 meters or 12 meters (double-wall corrugated pipe)
HDPE pressure rating system
PN Series (European Standard)
PN6, PN8, PN10, PN12.5, PN16: corresponding working pressures are 0.6MPa, 0.8MPa, 1.0MPa, 1.25MPa, 1.6MPa respectively
National standard pressure level
0.25MPa, 0.4MPa, 0.6MPa, 1.0MPa, 1.25MPa, 1.6MPa: For water supply pipes, PE100 grade pipes can reach up to 1.6MPa
Selection recommendations
Water/gas pipelines: PN10-PN16 (1.0-1.6 MPa) is preferred.
Fire protection systems: Requires ≥1.6 MPa, and steel wire reinforced pipe is recommended.
Drainage systems: Focus on ring stiffness rather than pressure rating.
Заключение
When selecting HDPE pipe, the appropriate diameter, wall thickness (or ring stiffness level), and length must be determined based on specific project requirements (such as the conveying medium, pressure, flow rate, and burial environment). From small pipes measuring a few millimeters to giant pipelines spanning several meters, HDPE pipe offers a comprehensive solution.
