ASTM D1785 uPVC Water Supply Pipe

Application Scenarios

Urban clean water supply 

Designed for pressurized potable and cold water systems, ASTM D1785 uPVC Pipe provides reliable water flow with excellent corrosion and scale resistance. Suitable for residential, commercial, and municipal water supply applications.

Irrigation & Agricultural Water Systems

Ideal for agricultural irrigation and water distribution, the pipe provides reliable performance for sprinkler and other suitable irrigation systems. Its lightweight construction simplifies transportation and installation.

Residential & Commercial Water Distribution

Suitable for pressurized cold water distribution in homes, commercial buildings, and facilities. Its smooth interior helps reduce friction loss and supports efficient water flow.

Industrial Water Piping

Used for compatible industrial water supply, process water, and cooling water systems. uPVC construction provides excellent resistance to corrosion and many common chemicals.

Key Advantages of UPVC Pipes
1. Lightweight

Unit weight is only 1/6 that of cast iron pipes, facilitating easy handling and transport.

UPVC density: 1,350–1,550 kg/m³ vs. ductile iron: ~7,050 kg/m³. A DN400 UPVC pipe requires only 4 workers for transport and installation, with each joint completed in ~10 minutes. Ductile iron pipe (Class K9) of the same diameter is virtually uninstallable without heavy machinery—particularly advantageous in rugged terrain or remote areas. Transport costs reduced by 50–66%.

2. Low Flow Resistance

Smooth inner wall prevents scaling; friction loss is over 30% lower than cast iron pipes.

Roughness coefficient: n=0.009, substantially lower than metallic pipes. Under identical diameter and flow conditions, head loss per unit length is significantly reduced, lowering pump head requirements and energy consumption. Flow capacity increased by 30% compared with cast iron pipes of the same diameter.

3. High Mechanical Strength

Excellent pressure rating, impact resistance, and tensile strength. Low modulus of elasticity provides superior seismic performance.

As a flexible pipe,the low modulus also dampens water hammer and pressure surge effects. Widely applied in pressure classes ranging from 0.2 to 2.5 MPa.

4. Corrosion Resistance

Outstanding resistance to inorganic acids, alkalis, salts, and chemicals; unaffected by moisture or soil pH.

No anti-corrosion coating required. Maintenance costs are only 30% of cast iron pipes. Ideal for industrial wastewater discharge and highly corrosive environments such as seawater aquaculture.

5. Easy Installation

Flexible EPDM rubber ring joints or solvent cement joints enable rapid assembly.

Correctly installed joints are leak-proof. Systems can be commissioned immediately upon successful pressure testing, significantly shortening construction schedules.

6. Long Service Life

Designed service life of 50+ years under normal operating pressure.

Excellent aging resistance, immune to bacterial and biological attack, ensuring long-term, reliable water transmission.

7. Non-Toxic and Hygienic

Manufactured with lead-free, environmentally friendly calcium-zinc stabilizers, fully compliant with national drinking water hygiene standards.

UPVC is nutritionally inert to microorganisms. The smooth bore inhibits sludge accumulation and tuberculation, preventing secondary contamination. Jianlong UPVC pipes have achieved full lead-free production.

8. Cost-Effective

Lower material, transport, and installation costs, combined with extended service life, deliver significant economic benefits.

Total project costs are 30–40% lower than cast iron systems. Maintenance costs are only 30% of cast iron, and labor costs are substantially reduced.

Install

Packaging and Delivery

Quality control and testing

hydrostatic strength

The hydrostatic strength of the pipe should meet the requirements of Table 8.

6.6Pipe socket hydrostatic strength

The hydrostatic strength of the pipe socket is only applicable to sockets with elastic sealing rings and should meet the requirements of Table 9.

6.7Hygiene requirements

6.7.1 The vinyl chloride monomer content of pipes used for conveying drinking water shall not exceed 1.0 μg.g/g6.7.2 The sanitary requirements for pipes used to transport drinking water shall comply with... combineGB/T 17219According to the regulations.

FAQ
1.Do UPVC pipes buried underground require anti-corrosion treatment?

UPVC pipes offer excellent chemical corrosion resistance and are unaffected by moisture or soil pH levels, thus requiring no anti-corrosion treatment. However, care must be taken to remove stones from the trench bottom and lay a sand bed of at least 15 cm before pipe installation to prevent damage from sharp objects.

2.What is the service life of UPVC water supply pipes?

Under normal operating pressure and applicable temperature ranges, the design service life is 50 years. Actual service life may vary depending on installation quality, operating pressure, temperature, and other factors.

3.What are the main causes of leakage in solvent cement joints?

Inferior or expired cementing materials

Improperly cleaned joint surfaces (presence of moisture, oil, or dust)

Uneven or insufficient application of solvent cement

Failure to chamfer the pipe spigot end

Incomplete insertion — spigot not pushed to the bottom mark

Moving the pipe before adequate curing time

Construction at excessively low temperatures (below -10°C is not recommended)

4.What should be noted regarding trenching and backfilling?

Stones at the trench bottom must be removed and a sand bed of at least 15 cm laid before pipe installation. Pipes must not be laid directly on rocks.

During backfilling, large bricks or stones must not be thrown directly onto the pipes.

Backfill material should be compacted in accordance with specifications.