The sand-core FRP pipe is manufactured using a specialized process with resin (food-grade resin for potable water applications), fiberglass reinforcement, and quartz sand as raw materials.

Category:

FRP pipe

Tel:

+86 13932879971

E-mail:

salesdirector@jzfrp.com

Inquiry

Suitable Fields

1. Potable water transportation;

2. Sewage discharge;

3. Seawater transportation;

4. Power plant circulating water pipelines;

5. Transportation of corrosive media in chemical plants:

6. Oil and gas transportation;

7. Agricultural irrigation.

Advantages of FRP Sand-Core Pipes

1. Excellent Corrosion Resistance & Water Safety

FRP pipes resist acids, alkalis, salts, seawater, untreated sewage, corrosive soils/groundwater, and various chemical fluids without affecting water quality.

2. Anti-Fouling & Microorganism Resistance

The smooth, non-reactive surface of unsaturated polyester resin prevents fouling by marine organisms (e.g., barnacles) and microbial growth.

3. Thermal Stability (-50°C to 110°C)

Maintains strength and toughness at -30°C
Long-term service range: -50°C to 80°C
Special resin formulations allow operation above 110°C

4. Lightweight & High Strength for Easy Installation

Density: 1.65–2.0 g/cm³ (1/4 the weight of steel)
Tensile strength:
- Hoop: 180–300 MPa
- Axial: 60–150 MPa
Bell-and-spigot joints enable rapid installation

5. Low Friction Loss & High Flow Efficiency

Ultra-smooth interior (Hazen-Williams coefficient n=0.0084) vs:
- Concrete pipe (n=0.014)
- Cast iron (n=0.013)
Reduces head loss by 20–40% compared to traditional materials

6. Electrical & Thermal Insulation

Volume resistivity: 10¹²–10¹⁵ Ω·cm
Thermal conductivity: 0.23 W/(m·K) (0.5% of steel)

7. Abrasion Resistance & Low Maintenance

No need for:
- Cathodic protection (saves >70% maintenance costs)
- Anti-corrosion coatings
- Insulation upkeep

8. Customizable Design Flexibility

Tailored pressure ratings (up to 6.4 MPa) and stiffness classes (SN2500–SN10000) for project-specific requirements.

9. 50+ Year Service Life (Verified)

Accelerated aging tests confirm >50-year lifespan in buried conditions.

10. Superior Life-Cycle Economics

Lower total cost for large diameters (economies of scale)
Zero routine maintenance for underground installations

Cases


Olympic water transportation project construction site	DN1400 fiberglass reinforced plastic pipes with sand filling,manufactured and supplied for the 2008 Beijing Olympic Games infrastructure project, used in the Beijing Shunyi water diversion project	Sand-filled pipes manufactured by our company in 2009 for the Dehui branch line project of the Songshu water supply project in central Jilin Province

Wall Thickness Parameter Table of Sand-filled Pipes

Stiffness	SN2500			SN5000			SN10000
Pressure	MPa			MPa			MPa
Diameter	0.25	0.6	1.0	0.25	0.6	1.0	0.25	0.6	1.0	1.6
300					7.2	7.2		7.2	7.2	7.2
350					8.2	7.6		8.2	8.2	7.6
400					8.2	7.6		8.5	8.2	7.6
500	7.1	7.2	7.0	8.8	9.0	8.6	11.1	11.3	10.6	9.2
600	8.4	8.6	8.3	10.5	10.8	10.0	13..4	13.4	12.4	11.9
700	9.4	9.6	8.3	12.3	11.9	11.5	15.5	15.1	14.2	13.4
800	11.2	10.7	9.8	14.0	13.3	12.9	17.8	16.8	16.1	14.9
900	12.5	11.9	10.8	15.8	15.5	14.2	20.0	19.0	17.8	16.7
1000	13.9	13.2	12.3	17.5	16.6	15.8	22.2	21.0	19.7	18.2
1100	15.4	14.5	13.6	19.3	18.3	17.2	24.6	23.4	21.7	20.8
1200	16.0	15.5	14.5	21.0	18.4	18.6	26.8	25.0	23.3	21.8
1300	18.1	16.7	15.6	22.9	21.5	20.0	29.2	26.9	25.5	23.6
1400	19.5	17.7	16.4	24.6	22.4	21.5	31.2	28.6	27.0	25.5
1500	20.7	19.0	17.7	26.1	24.4	23.5	33.2	30.4	29.6	27.1
1600	21.8	20.5	19.2	27.8	26.0	24.5	35.4	33.3	31.0	28.9
1800	24.6	22.6	20.4	31.3	28.8	26.8	39.9	36.9	34.1	31.3
2000	27.4	25.4	23.4	35.0	32.4	29.6	44.7	38.2	37.3	36.1
2200	29.7	27.6	25.3	37.8	35.3	32.6	48.7	42.5	41.5	40.4
2400	32.6	30.3	28.4	41.8	38.8	34.6	53.4	45.8	44.6	42.8
2600	36.3	33.5	31.5	45.2	40.5	35.4	55.8	48.9	47.2	45.6
2800	39.3	36.0	34.0	49.4	45.1	42.0	62.0	56.5	53.0	51.0
3000	41.0	38.1	36.2	52.0	47.0	45.3	67.0	61.7	58.2	54.0

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Butt Joint

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Any questions or request for our products or service,
please contact us:

Telephone:086 318-8613433 086 318-8638136

Mobile:+86 13931832669 +86 13932879971

E-mail:jzfrp@jzfrp.com jzzyfrp@jzfrp.com salesdirector@jzfrp.com

Address: No.14, Nanqiao Street, Jizhou, Hebei Province
Headquarters Address: No.955 Xinghua South Street, Jizhou District, Hengshui City, Hebei Province,China

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