RIFENG PP-R plumbing system, made out of high-quality polypropylene random copolymer, can be utilized in both residential and commercial buildings.

Technical specification

Advantages :

• Applied for potable water pipeline system with hygienic and non-toxic features.

• High temperatures and high pressure resistant.

• Heat preservation and energy saving during the flow.

• Lighter and more smoother than the metal pipe.

• The reliable and convenient connecting pipes and fittings by homogeneity melt.

• Notice free at high flow rates.

• Fusion technology's speed and ease of use.

• Significant time and labour savings.

• A long lifespan up to 25 years under normal conditions.

RIFENG PP-R piping system can be used in following applications:

• Cool and hot water distribution

• Pipes for connecting various types of low-temperature heating systems

• Pipes for solar energy system heating and cooling settings

• Cold water piping for air conditioners

Application areas:

• Potable water, hot and cold water, chemicals, irrigation

• Apartments, condominiums, and public housing

• Commercial shopping malls, as well as office buildings

• Chemical and food processing manufacturing plants

• Hospitals

• Schools, laboratories and chemical sewerage

• Hotels and resorts

NSF /ANSI /CAN 61 – about Health Effects of Drinking water system components
DVGW W 544 – about PP-R pipe general mechanical requirement
DVGW W 270 – about Hygienic property of material
UBA KTW – about Hygienic property of material odor test
DIN 8077 – about Polypropylene pipe dimension
DIN 8078 – about Polypropylene pipe general quality requirement and testing
EN ISO15874 – about Plastic piping system for hot and cold water installation

NSF – from USA, refers to NSF /ANSI /CAN 61
DVGW – from German, refers to DVGW W 544,UBA KTW,DVGW W 270
AENOR – from Spain, refers to EN ISO 15874
CE – from Europe, refers to EN ISO 15874
ISO 9001:2015 – “Quality management system”
ISO 14001:2015 – “Environmental management system”
ISO 45001:2018 – “Occupational health and safety management system”

TYPE PPR Pipe PVC Pipe Copper pipe
Roughness(μm) 0.4~1.0μm       1.5mm ≥2.0μm
Melting point (℃) 145 No obvious melting point, softening point around 85℃ >900
Density (g/cm3) 0.89~0.91 1.42 8.96
Modulus of elasticity (MPa) 800 2900-3400 105-137 GPa
Thermal conductivity (w/mK) 0.24 0.16 388~391
Coefficient of thermal expansion (mm/mK) 0.15 8*10-5 0.017
Property Test Method  Unit  Value
Melt Flow Rate
MFI 190/5 ISO 1133 g/10 dk.                                                                                       0.5
MFI 230/2.16 ISO 1133 g/10 dk. 0.3
MFI 230/5 - g/10 dk. 1.5
Density at 23℃ ISO 1183 g/cm3 0.9
Tensile Stress at Yield ISO 527 Mpa 25
Elongation at Break ISO 527 % >50
Modulus of Elasticity, Tensile Test ISO 527 N/mm2 900
Impact Strength (Charpy)
23℃ ISO 179/1eU Kj/m2 No failure
0℃ ISO 179/1eU Kj/m2 No failure
-10℃ ISO 179/1eU Kj/m2 No failure
Notched Impact Strength (Charpy)
23℃ ISO 179/1eA Kj/m2 20
0℃ ISO 179/1eA Kj/m2 4
-10℃ ISO 179/1eA Kj/m2 3
Coefficient of Linear Thermal Expansion DIN 53 752 K-1 1.5×10-4
Thermal Conductivity at 20℃ DIN 52 612 W/mK 0.24
Specific Heat at 20℃ Adiabatic Calorimeter Kj/kg K 2
Standard Dimension Ratio (SDR)
RIFENG PPR pipe provide the following SDR-sizes:
  1. SDR6
  2. SDR7.4
  3. SDR9
  4. SDR11
Dimensions: 20mm,25mm,32mm,40mm,50mm,63mm,75mm,90mm,110mm,160mm
Reliable homogeneous connections
Homogeneity melting provides reliable connection strength and sealing property between PP-R pipes and PP-R fittings.

Metal thread connection
Rifeng also provides metal thread connection methods to achieve connection conversion between different scenarios. 
Rifeng PP-R fittings have an unique structure - swallow tailed structure on the metal insert, which can eliminate the risk of leakage from gaps caused by different thermal conductivity performances of brass and plastic.
Rifeng holds the exclusive patent to manufacture these fittings.

SWALLOW TAILED NOTCH                                36 BITING POINTS                                BUTTON SAFETY RING                                           
Avoid leakage risk caused by                                Anti-axial slip between metal                  Anti-over-twist when installing
different thermal expansions.                                 insert and the plastic part.                      devices with threads.