Nominal diameter: DN50 (2 inches)
Outer diameter range: 63mm±0.3mm (national standard GB/T 13663)
Pressure level:
PN0.6MPa (6 kg)
PN0.8MPa (8 kg)
PN1.0MPa (10 kg)
Common length: 6 meters/root or coil (small diameter can be curled)
Chemical stability
Resistant to acid and alkali corrosion (pH value 2-12), suitable for chemical wastewater transportation.
Low temperature toughness
No brittle cracking at -40℃, the first choice for frozen areas in the north.
Hydraulic performance
Smooth inner wall (roughness coefficient 0.009), 12% higher flow rate than metal pipes.
Sanitary level
Passed GB/T 17219 drinking water certification, no plasticizer precipitation.
|
Field |
Specific Application |
Recommended Pressure Rating |
|
Agriculture |
Drip irrigation sub-pipes / Mobile sprinkler systems |
PN0.6 |
|
Municipal Works |
Rainwater collection pipelines / Cable protection ducts |
PN0.8 |
|
Industry |
Chemical media transport / Plant circulating water system |
PN1.0 |
|
Mining |
Tailings slurry transport (wear-resistant PE100) |
PN1.0 |
Comparison of connection methods
Hot-melt connection: suitable for pipe diameter ≥63mm, requiring a special Hdpe Pipe Welding Machine (temperature control 210±10℃)
Electric fusion connection: pipe fittings with integrated resistance wire, high precision but 30% higher cost
Flange connection: used when transitioning with metal equipment interface
Groove construction specifications
Deep burial requirements: +30cm below the frozen soil layer (≥1.2m in the north)
Foundation treatment: sand cushion thickness ≥15cm, compaction ≥90%
Backfill standard: layered backfill (20cm per layer), sharp stones are prohibited
Special environment response
Seismic zone: set up an anti-seismic elbow every 6 meters
Highly corrosive soil: external anti-corrosion tape + cathodic protection
Winter construction problems
Insulation sheds need to be built in environments below -5℃, and the preheating time is extended by 50%.
Leak detection
It is recommended to use the air pressure test method:
1.5 times the working pressure for 24 hours, and the pressure drop ≤1% is qualified.
UV protection
Black UV-resistant pipes (containing 2.5% carbon black masterbatch) should be selected for outdoor installation.
International/domestic standards
ISO 4427 (water supply), GB/T 13663 (PE pipe), GB 15558 (gas pipe) 89.
Key indicators
Environmental stress cracking resistance (≥4320 hours), oxidation induction time (≥20 minutes)
2 inch polyethylene pipe is gradually replacing traditional metal pipes with its excellent comprehensive performance. Correct selection and standardized construction can ensure the realization of a 50-year design life. It is recommended that engineering units give priority to products produced with PE100 grade raw materials to obtain the best cost-effectiveness.
