Eaha te taa-ê-raa i rotopu i te CPVC e te UPVC?

I roto i te faanahoraa o te pipeline, CPVC (te mau hu'ahu'a polyvinyl) e UPVC (polyvinyl chloride), mai na paipa hu'ahu'a e piti e nehenehe e pato'i i te ino, mōrī, Mea ohie roa ia faauta, e te tahi atu mau maitai, E faaohipa-rahi-hia. Āre'a, due to differences in material properties, there are significant differences between the two in practical applications.

Material characteristics and core differences

1. Chemical structure differences

CPVC pipe: The chlorine content of PVC resin is increased from 56% a 63% a 69% through the chlorination modification. This process significantly enhances the material’s high-temperature resistance and chemical stability.

UPVC pipe: Directly processed from unplasticized polyvinyl chloride resin without chlorination, retaining the rigidity and low-cost characteristics of PVC.

2. Key performance comparison

CPVC tube vs. UPVC tube: Core difference and application field comparison table

Analysis of differences in application fields

1. Building water supply and drainage system

CPVC pipe applications

  Hot water supply: withstand hot water above 80℃, suitable for hotels, hospitals, and other central hot water systems.

  Fire sprinkler system: V-0 flame retardant performance to meet the fire code can replace some metal pipes.

  Ato: A five-star hotel uses CPVC pipe to lay a circulating hot water pipe network, and there has been no leakage for five consecutive years.

UPVC pipe Applications 

  Cold water transmission: municipal tap water, home cold water pipe, and other room temperature scenarios.

  Drainage system: Building rain and sewage pipes is 40% cheaper than cast iron pipes.

  Limitations: It is easy to soften and deform when the temperature exceeds 60℃ and is not suitable for a hot water environment.

2. Industrial piping system

CPVC pipe advantage areas

  Chemical industry: Transport concentration ≤40% of hydrochloric acid, ati sulfuric, and other corrosive media (temperature < 80°C).

  Electroplating industry: withstands wastewater containing chromium, nikele, and other heavy metal ions.

  Ato: A chemical plant replaced stainless steel pipes with CPVC pipes, reducing annual maintenance costs by 65%.

UPVC pipe advantage areas  

Low pressure ventilation system: laboratory exhaust pipe, workshop exhaust pipe.

  Pure water transmission: ultra-pure water pipeline in electronics factory to avoid metal ion pollution.

3. Agricultural irrigation system

CPVC pipe: suitable for greenhouses and other hot water heating scene, resistant to long-term corrosion of fertilizers and pesticides.

UPVC pipe: widely used in open-air drip irrigation, sprinkler irrigation systems, and low-temperature environments need to add antifreeze.

• Special applications

Floor heating system: CPVC pipe high-temperature resistance can meet the needs of 45℃~60℃ hot water circulation.

Mariculture: UPVC tubes are easy to age in the salt spray environment, and CPVC’s life is extended by 2-3 mau taime.

Key factors in selection decision

1. Medium temperature

< 60°C : the UPVC tube is preferred (cost saving 30%-50%).

≥60℃ : CPVC tube must be used to avoid the risk of pipeline deformation.

2. Chemical compatibility

Transport organic solvents (such as acetone, xylene) : CPVC tube is required.

Transport chlorine gas, ozone and other strong oxidants: it is recommended to use UPVC tube (CPVC may chlorinate).

3 Install the environment

Directly buried underground: CPVC pipe has higher compressive strength and is suitable for heavy vehicle traffic areas.

High-cold areas: UPVC pipes need to add impact modifiers (such as CPE) to avoid low temperature brittle-cracking.

4. Cost budget

Initial investment: UPVC tube price is about 60%-70% of CPVC tube price.

Full life cycle cost: CPVC tube maintenance costs are lower in high temperature scenarios.

Common misunderstanding clarification

Misconception 1: UPVC tube can not be used in chemical industry scenes?

Correction: UPVC can transport weakly corrosive media (such as hydrochloric acid with a concentration below 10%), but CPVC is required for strong corrosion or high temperature.

Misconception 2: Can CPVC pipes replace metal pipes to transport steam?

Correction: The upper temperature limit of CPVC is 95 ° C, and the steam pipe (usually ≥100 ° C) needs to be changed to PPH or metal.

How to choose?

Base on the temperature: fluid temperature > 60℃ → select CPVC; Room temperature → UPVC.

Base on corrosion: strong acid/base → choose CPVC; Ordinary media → UPVC.

Base on the budget: high cost performance demand → select UPVC; Special performance requirements → select CPVC.

Taata hoo

Te mau haamaramaramaraa no ni'a i te mau haamaramaramaraa a Luoyang., Ltd. o te hoê ïa taata hamani tao'a aravihi e te hooraa i te mau paipa e te mau tao'a. Te horo'a nei matou i te mau pipe PPR, Nga paipa PVC, Nga paipa PE, e te mau paipa no te faahanahana i te tahua e te mau tao'a no te mau huru paipa atoa, e te mau hoo teitei e te mau hoo. Mai te mea e, e uiuiraa ta outou no ni'a i te mau paipa e te mau rave'a, Eiaha e feaa faahou i te farerei ia matou. No te haafatata ' tu ia matou, e nehenehe ta outou e tairi i nia i te tao'a.