HDPE (high-density polyethylene) PN16 pipe is a high-pressure polyethylene pipe with a working pressure rating of 1.6MPa (PN16). It is suitable for water supply, drainage, irrigation and industrial fluid transportation. Its core advantages include:
Corrosion resistance: It can resist the erosion of acids, alkalis, salts and chemical media8.
High toughness: elongation at break ≥350%, adaptable to foundation settlement and earthquake environment.
Long life: It can be used for more than 50 years in an environment of -40℃~60℃.
Lightweight and easy to install: Compared with metal pipes, it is lighter and easier to construct.
(1) Size specifications
Diameter range: DN20mm~DN1600mm, common specifications include DN20, DN25, DN32, DN40, DN50, DN63, DN75, DN90, DN110, DN160, etc.
Wall thickness: varies with the pipe diameter, such as DN20 wall thickness 2.3mm, DN110 wall thickness 10.0mm.
Length: Standard length is 5.8m or 6m, and 12m can also be customized.
(2)Mechanical properties
|
Test Item |
Requirement |
|
20℃ Hydrostatic Strength (12.4 MPa, 100 h) |
No rupture, no leakage |
|
80℃ Hydrostatic Strength (5.5 MPa, 165 h) |
No rupture, no leakage |
|
Elongation at Break |
≥ 350% |
|
Longitudinal Reversion (110℃) |
≤ 3% |
|
Oxidation Induction Time (200℃) |
≥ 20 minutes |
(3) Weather resistance (blue pipe)
After aging energy ≥ 3.5GJ/m², it still meets the 80℃ hydrostatic strength (4.6MPa, 165h) without leakage.
Municipal water supply: urban tap water pipe network system.
Agricultural irrigation: drip irrigation, sprinkler irrigation system, especially suitable for PN16 flexible HDPE pipe.
Industrial fluid transportation: oil, natural gas, chemical media.
Drainage system: sewage, rainwater discharge, strong corrosion resistance.
Mine dredging: wear resistance is 4 times better than steel pipe, suitable for ore transportation.
Storage:
Warehouse temperature ≤40℃, outdoor stacking needs to be covered.
Horizontal stacking height ≤1.5m, ≤3m after bundling.
Transportation:
Avoid throwing, dragging, and collision prevention in cold weather.
The vehicle needs flat bottom support, and the ship needs to be fixed to prevent collision.
Connection method: hot melt butt, electric fusion connection, socket welding.
Foundation treatment:
General soil: 100mm coarse sand cushion.
Soft soil foundation: 200mm gravel + 50mm sand layer.
Backfill requirements:
Heavy machinery is prohibited within 0.4m of the pipe top, and the backfill must be compacted layer by layer (each layer ≤ 200mm).
International standards: ISO 4427, GB/T 13663, AS/NZS 4130.
Certifications: CE, ISO 9001, WRAS (drinking water safety certification).
|
Property |
HDPE PN16 |
PPR |
|
Applicable Temperature |
-40℃ to 60℃ |
0℃ to 70℃ |
|
Connection Method |
Butt fusion / Electrofusion |
Butt fusion |
|
Flexibility |
High (seismic resistant) |
Lower |
|
Maximum Diameter |
DN1600mm |
DN160mm |
|
Main Applications |
Water supply / Drainage / Industrial |
Building hot and cold water |
HDPE pn16 pipe has become the first choice for modern water supply and industrial transportation systems due to its high strength, corrosion resistance and long life. When purchasing, you need to pay attention to the wall thickness, pressure level and certification standards, and strictly follow the backfill and connection specifications during construction to ensure long-term and stable operation of the system.
