Fomu Yolumikizirana

Zomwe Ndi Zabwino? Chitoliro cha PVC vs PEX Pipe vs PPR Chitoliro

In modern industry, Mtengo wa PEX, PVC pipe and PPR pipe have a wide range of applications, today we will discuss “How to choose the pipes?

Comparison za Core Parameters

IndicatorsPipi ya PVCMtengo wa PPRChithunzi cha PEX
Material CompositionZithunzi za PVC + stabilizerRandom copolymer polypropyleneCrosslinked polyethylene
Operating Temperature0-60 ℃20-95 ℃70-110 ℃
Kupanikizika Rating1.0MPa(Class 1.0)2.0 MPa (PN20)1.6 MPa(SDR9)
Coefficient of Thermal Expansion6 x 10 ⁻ ⁵ / ℃1.5 x 10 ⁻ ⁴ / ℃1.2 x 10 ⁻ ⁴ / ℃
Service Life2550 zaka50 + zaka5070 zaka
Kulumikizana MethodAdhesive connectionHot melt weldingClamp type connections
Cost per Meter$0.81.2$1.52.0$2.03.5

▲ Collation of laboratory data according to ASTM standards

PVC Water Supply Pipe

Analysis of Zithunzi za PVC Pipe and Fitting

1. Technical breakthrough point

Enhanced formula: The use of calcium zinc stabilizer instead of traditional lead salt formula, through the NSF 61 drinking water certification

Improved impact resistance: Add 5% acrylic elastomer, drop hammer impact strength of 20kJ/m² (ASTM D2444)

  • Applications

Municipal engineering: Drainage main pipe with a diameter of more than 300mm

Agricultural irrigation: UV anti-aging formula pipeline (add 2% carbon black)

Chemical: CPVC corrosion resistant variant (suitable for pH 113)

3. Advantages of PVC Pipe and Fitting

Originalsandwichpipe wall structure: inner and outer antibacterial layer + middle strengthening layer

Production accuracy: diameter tolerance ±0.15%, ellipticity ≤0.5%

Testing standard: Passed the ISO 44222:2007 burst pressure test

Analysis of Zithunzi za PVC Pipe and Fitting

1. Material revolution

Fourth generation β crystal PPR: thermal deformation temperature increased to 135℃ (25℃ higher than the traditional)

Nano antibacterial layer: composite silver ion coating, mlingo wa antibacterial > 99.99%

2. Mfundo zoyika

Hot melt parameters:

260±5℃ welding temperature

Heating time = pipe diameter (mm)/20 x 1.5 seconds

Cooling time > Pipe diameter (mm)/10 mphindi

3 Special application scheme

Hospital hot water system: S4 grade pipe (wall thickness 3.7mm) bearing 2.5MPa

Ground source heat pump system: compound pipe with EVOH oxygen blocking layer

Flexible PEX Pipe and Fitting

Innovative Application of PEX pipeline

  1. Technological

First generation: Peroxide crosslinking (PEXA)

Generation 2: Silane crosslinking (PEXB)

Electron Beam Irradiation Crosslinking (PEXC) Chitoliro

2. Frontier technology

Intelligent memory pipe: 20℃ environment still maintain flexibility

Oxygen blocking composite pipe: aluminum layer thickness 0.2mm, oxygen transmittance < 0.1g/m³

3. Engineering case

Burj Dubai water supply system: Use PEXALPEX composite pipe, pressure 10bar

Nordic floor heating project: φ16mm pipe laying spacing 75mm, surface temperature difference < 0.5℃

Selection of Pipe decision

1. Water temperature < 60℃ → PVC is the best cost-effective

2.6095℃ hot water → Select PPR (preferred β crystal)

3. Floor heating/complex wiring → PEX flexible piping

4. Drinking water system → PPR nanoantibacterial tube

5. Corrosive media → PVC/CPVC special pipe

Global certification comparison table

Certification SystemPVC requirementsPPR standardPEX test method
European UnionEN 14522:2009MU ISO 15874MU ISO 15875
United StatesASTM D1785ASTM F2389ASTM F876
ChinaGB/T 10002.12006GB/T 18742.22017CJ/T 1752002
Middle EastSASO 1993GSO 1893ES 14522:2015

Our company qualification: At the same time holds WRAS, UL, W270 and other 12 international certifications

Solution of Pipe Installation

Pipi ya PVC:

Check if the adhesive is expired (shelf life < 6 months after opening)

Socket depth should be ≥ 1.5 times the diameter of the pipe

PPR hot melt deformation:

Use a welder with digital display temperature control

Extend the cooling time by 30% when the ambient temperature is < 5℃

PEX pipe fittings fall off:

Use brass clamps instead of plastic clamps

Bend radius > 6x pipe diameter (PEXA)

Wopereka

Malingaliro a kampani Luoyang Datang Energy Tech Co., Ltd. ndi otsogola ku China wopanga okhazikika mu mapaipi apamwamba apulasitiki ndi zowotchera. Zokhala ndi mizere yopangira makina apamwamba kwambiri komanso yothandizidwa ndi gulu la 200 akatswiri, timapereka mzere wochulukira wazogulitsa womwe uli ndi over 150 types of plastic pipes and fittings designed for water supply and drainage systems, kufalitsa gasi, ndi machitidwe otenthetsera pansi. Zogulitsa zathu zazikulu zikuphatikizapo Mapaipi a PVC ndi Zopangira, PE (Zithunzi za HDPE) Mapaipi ndi Zopangira, Mapaipi a PPR ndi Zopangira, ndi PEX Floor Heating mapaipi. 

Ngati muli ndi mafunso okhudza athu Mapaipi Athanzi a PPR ndi Zopangira, chonde musazengereze kulumikizana nafe!

Tel.:0086-183 3790 0677

Wechat: 0086-183 3790 0677

Whatsapp: 0086-183 3790 0677

Imelo: sales@pipesandfittings.net

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