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Description
This dual-color polyethylene pipe features a co-extruded structure with a black inner layer and white outer layer, designed for agricultural irrigation systems. Manufactured from low-density polyethylene (LDPE) with added UV stabilizers and anti-aging additives, the pipe complies with GB/T23241-2009 standards. The black inner layer blocks light transmission, while the white outer layer reflects sunlight, addressing common issues in outdoor irrigation installations.
Custom Option | Details |
Custom diameters | Available upon request (outside standard 16-63mm range) |
Custom wall thickness | Different pressure ratings available |
Custom roll lengths | Any length from 50m to 1000m |
Custom color combinations | Other outer layer colors available for large orders |
Special packaging | Coils, cut lengths, or custom winding |
Private labeling | Custom packaging with your brand |
Note: Minimum order quantities apply for custom specifications.
Technical Parameters
Parameter | Value | Test Standard |
Elongation at break | ≥ 350% | GB/T 1040 |
Hydraulic test | ≥ 3 × working pressure | GB/T 6111 |
Oxidation induction time | ≥ 20 minutes | GB/T 17391 |
Material | LDPE with UV & anti-aging additives | - |
Construction | Co-extruded dual layer (Black inner / White outer) | - |
Light transmission | 0% (black inner layer) | Complete light blocking |
Implementation Standard | GB/T23241-2009 | - |
Size (mm) | 0.25 MPa Rating | 0.40 MPa Rating | Roll Length (m/roll) | Carton Size (cm) |
Φ16 | Wall Thickness: 1.0mm, G.W: 23Kgs | Wall Thickness: 1.2mm, G.W: 27Kgs | 500 | Dn80×30 |
Φ20 | Wall Thickness: 1.2mm, G.W: 14Kgs | Wall Thickness: 1.5mm, G.W: 17Kgs | 200 | Dn75×30 |
Φ25 | Wall Thickness: 1.4mm, G.W: 20Kgs | Wall Thickness: 1.9mm, G.W: 27Kgs | 200 | Dn100×30 |
Φ32 | Wall Thickness: 1.6mm, G.W: 30Kgs | Wall Thickness: 2.4mm, G.W: 41Kgs | 200 | Dn115×38 |
Φ40 | Wall Thickness: 1.9mm, G.W: 40Kgs | Wall Thickness: 3.0mm, G.W: 55Kgs | 100 | Dn120×36 |
Φ50 | Wall Thickness: 2.4mm, G.W: 51Kgs | Wall Thickness: 3.7mm, G.W: 63Kgs | 100 | Dn165×36 |
Φ63 | Wall Thickness: 3.0mm, G.W: 57Kgs | Wall Thickness: 4.7mm, G.W: 67Kgs | 100 | Dn150×36 |
Note: Gross weight per roll may vary slightly depending on manufacturing batch.
Size (mm) | Inner Diameter (mm) | Cross Section Area (cm²) | Weight per Meter (g/m) @0.25MPa | Weight per Meter (g/m) @0.4MPa |
Φ16 | 14.0 | 1.54 | 46 | 54 |
Φ20 | 17.6 | 2.43 | 70 | 84 |
Φ25 | 22.2 | 3.87 | 100 | 130 |
Φ32 | 28.8 | 6.51 | 150 | 205 |
Φ40 | 36.2 | 10.3 | 205 | 275 |
Φ50 | 45.2 | 16.0 | 340 | 440 |
Φ63 | 57.0 | 25.5 | 480 | 630 |
Pressure Rating | Max Working Pressure | Test Pressure | Burst Pressure (minimum) |
0.25 MPa | 0.25 MPa (36 psi) | 0.75 MPa (109 psi) | ≥ 1.0 MPa (145 psi) |
0.40 MPa | 0.40 MPa (58 psi) | 1.20 MPa (174 psi) | ≥ 1.6 MPa (232 psi) |
Product Features
The black inner layer provides 0% light transmission through the pipe wall, preventing photosynthetic activity inside the pipe. This eliminates algae and bacterial growth, which can clog emitters and contaminate irrigation water. This feature is particularly beneficial for drip and micro-irrigation systems where emitter clogging reduces system efficiency.
The white outer layer reflects sunlight instead of absorbing it, reducing pipe temperature and slowing material degradation from UV exposure. In high-sunlight conditions, this design can extend service life by 30-50% compared to standard black pipes. Lower pipe temperatures also reduce water temperature increases, which helps protect temperature-sensitive crops.
Made from virgin polyethylene resin with controlled additive content, the pipe resists cracking, chemical attack from common fertilizers and pesticides, and mechanical stress during installation. The precision-extruded smooth inner wall creates minimal friction resistance to water flow, reducing pressure loss along pipelines and pumping energy requirements.
Product Uses
This LDPE pipe serves multiple functions in agricultural irrigation systems. Larger diameters (32mm to 63mm) function as main distribution pipelines, carrying water from sources to irrigation zones. Medium diameters (20mm and 25mm) work as submain lines along crop rows, connecting to drip tape laterals. The 16mm diameter serves as final feed pipes for drippers and micro sprinklers. It is suitable for greenhouse irrigation, nursery operations, landscape installations, and above-ground permanent installations.
Before installation, calculate required pipe diameters based on flow rate, length, and allowable pressure loss. Select the appropriate pressure rating for your system. During installation, avoid sharp bends exceeding 8-10× pipe diameter and allow 1% slack for thermal expansion. Flush the system thoroughly before connecting emitters and pressure test for 1 hour. For maintenance, periodically inspect exposed pipe for UV damage and drain the system completely before winter in freezing climates.
FAQ
The black inner layer blocks 100% of light, preventing algae growth and emitter clogging. The white outer layer reflects sunlight, reducing pipe temperature and UV degradation. This combination extends service life by 30-50% compared to standard black pipes in exposed installations.
The pipe is available in diameters from 16mm to 63mm with pressure ratings of 0.25MPa and 0.40MPa. Standard roll lengths range from 100m to 500m depending on size. Custom sizes and lengths are available upon request.
Yes, this pipe has the same outer diameter and wall thickness as standard LDPE irrigation pipe, making it compatible with all standard barbed and compression fittings designed for LDPE pipe.
The pipe operates continuously at temperatures from -20°C to +45°C. The white outer layer helps maintain lower pipe temperatures in high-heat conditions.
