MENRED forest-green, three-layer PP-R pipes and matching heat-fusion fittings are designed for hot and cold potable-water distribution. The range includes S5, S4, S3.2 and S2.5 pipe series, with outside diameters from 20 to 63 mm depending on the series.
| Parameter | Specification |
|---|---|
| Material | PP-R (polypropylene random copolymer) |
| Construction | Three-layer pipe |
| Pipe series | S5 / S4 / S3.2 / S2.5 |
| Outside diameter range | 20–63 mm, depending on series |
| Colour | Forest green |
| Pipe manufacturing standard | GB/T 18742.2-2017 |
| Fitting manufacturing standard | GB/T 18742.3-2017 |
| Length marking | Meter scale |
| Connection method | Heat fusion |
| Application | Hot and cold water distribution |
| Other dimensions, colours and packaging | Confirm with MENRED for the selected order |
S2.5 is documented in 20 and 25 mm sizes. Confirm current availability, pipe lengths and packaging before ordering.
At the same outside diameter, a lower S value means a thicker wall and a smaller internal bore. Select the series using the actual temperature, pressure, design-life and flow requirements.
| Outside diameter (mm) | S5 / SDR 11 | S4 / SDR 9 | S3.2 / SDR 7.4 | S2.5 / SDR 6 |
|---|---|---|---|---|
| 20 | 2.0 | 2.3 | 2.8 | 3.4 |
| 25 | 2.3 | 2.8 | 3.5 | 4.2 |
| 32 | 2.9 | 3.6 | 4.4 | — |
| 40 | 3.7 | 4.5 | 5.5 | — |
| 50 | 4.5 | 5.6 | 6.9 | — |
| 63 | 5.8 | 7.1 | 8.6 | — |
Series columns show wall thickness in mm. A dash indicates that the supplied catalogue summary does not list that size for the series.
The matching range includes couplings, reducers, elbows, tees, unions, threaded transitions, caps and pipe clamps. Documented nominal fitting sizes include 20, 25, 32, 40, 50 and 63 mm; exact sizes and thread options vary by fitting type. Specify fittings together with the pipe rather than assuming every fitting is available in every size.
The MENRED Living Water System uses loop and series piping layouts to reduce stagnant sections in domestic water networks. The benefit depends on the layout and actual water use. The piping concept does not by itself sterilize water or guarantee elimination of microorganisms.
MENRED PP-R pipes are intended for hot and cold potable-water distribution in residential, commercial and public buildings. Confirm the selected pipe’s temperature-pressure classification, fitting compatibility and project documentation before specification.
For potable-water projects, request the relevant product approvals or test documentation for the destination market. Suitability must be assessed for the exact pipe and fittings supplied.
Water distribution pipe and floor heating loop pipe serve different roles in a building system. This page covers PP-R pipe; for flexible hydronic floor circuits, see MENRED PE-RT and PE-Xa underfloor heating pipes. For other related products, browse the pipe and fittings range.
Use qualified installers and compatible fittings. Follow the manufacturer’s heat-fusion instructions, including pipe preparation, insertion depth, heating and cooling times. Plan pipe supports and thermal movement according to the installation design. Protect pipe from damage and contamination, and complete the required pressure test before commissioning or concealing the installation.
Specify the pipe outside diameter, wall thickness or series, quantity, required pipe length, colour and fitting requirements. Include the intended application, design temperature and pressure, destination market and required documentation. MENRED can confirm the available configuration, packaging, delivery schedule and quotation.
The documented range includes S5, S4, S3.2 and S2.5. S5, S4 and S3.2 cover outside diameters of 20–63 mm; S2.5 is listed in 20 and 25 mm sizes.
At the same outside diameter, a lower S value means a thicker wall and smaller internal bore. The corresponding SDR values are 11 for S5, 9 for S4, 7.4 for S3.2 and 6 for S2.5. Select the series for the actual operating conditions.
MENRED PP-R pipe is intended for hot and cold potable-water distribution in buildings. Select the pipe according to the project temperature, pressure and installation requirements.
It means an outside diameter of 40 mm and a wall thickness of 3.7 mm. This dimension is listed in the S5 range; other series have different wall thicknesses.
The pipes use heat-fusion connections with compatible fittings. Follow the product instructions for tooling, preparation, heating and cooling, and use qualified installers.
This page covers PP-R water distribution pipe. MENRED also offers PE-RT and PE-Xa underfloor heating pipes on a separate product page. Select the pipe material and construction for the actual application.
Provide the outside diameter, wall thickness or pipe series, total quantity, application, design temperature and pressure, destination market, fitting requirements and any required product documentation.
Send your required dimensions, quantity, fitting requirements and destination market. Include the project temperature and pressure requirements for product selection.
Contact MENRED
Since its inception in 1995, Zhejiang Menred Comfort System Co., Ltd., affectionately known as Menred, has firmly established itself as a beacon of innovation and excellence in the global manufacturing industry. Specializing in 'radiant heating and cooling, ventilation, water purification, and smart home' systems, Menred is not only a trusted partner of the National Key Laboratory of 'Future Building' but also proudly serves as a certified factory for Electrolux AB, a leading name in the global appliance arena. At 'MENRED Comfort Home', we have ambitiously evolved from mere temperature control solutions to comprehensive systematic air conditioning systems. Our focus is not just on cost-effective solutions but on pioneering energy efficiency, putting the user's needs at the heart of our product development. Our passion extends to creating sublime comfort home product solutions, spearheading the innovative development of green building equipment, and delving into the engineering application and research of Building Integrated Photovoltaic (BIPV) and energy storage solutions. Within the esteemed Menred group, we proudly house 4 National High-tech Enterprises alongside 3 enterprises recognized for High-quality Technological Advancement. These enterprises have not only been conferred with the prestigious national title of Technologically Advanced Little Giant' but also have been distinguished as Service Oriented Manufacturing Demonstration Enterprises, signifying our commitment to excellence and innovation.
