• GI PIPE vs CPVC Pipe

CPVC Pipes vs GI Pipes : For Indian Homes

We often get calls from home-owners who was confused whether to use GI pipeline or CPVC pipe line for Bathroom Plumbing. Firstly let’s see what these 2 pipes are made of.

GI pipes” are galvanized iron pipes made of iron/ zinc.
CPVC pipes” are Chlorinated Poly Vinyl Chloride made up of Chlorine/ Ethylene/ Color Pigments/ Additives.

GI pipes were traditionally used by builders & architects until CPVC pipes came in market. And now CPVC pipes are extensively used for building pipeline purpose. There are several advantages of having CPVC pipes, like

Rusting and Leakage of Galvanized Pipe

Rusting and Leakage of Galvanized Pipe

  • More Durable – CVC Pipes are durable as compared to GI pipes. This is because GI pipe are not corrosion resistant and so they eventually rust. CPVC pipes are corrosion resistant pipes.
  • Compatible to hot & cold water – CPVC pipes are not affected by warm water unlike GI pipes.
  • Low Bacterial growth – As observed, bacterial growth in CPVC pipes is very low as compared to GI pipes.
  • No scale & pit formation – As CPVC pipes are non-corrosive and resistant to scale formation, there’s no build up or any formation that causes loss of water pressure.
  • Chemical Resistance – CPVC pies are excellent chemical resistant pipes. They also are unaffected by chlorine if present in water supply.
  • Easy Installation – CPVC pipes can easily be installed through cold wielding. GI requires more man hours and if not installed correctly can cause breakage and leakage problem. CPVC pipes are easier to handle then GI pipes. Care needs to be taken while cutting and joining CPVC pipes. Angles/ corners of CVPC pipes are joint with a solution- SALVAT. These joints are called as cuplings and are available in different forms like L-shape, T-shape, straight, etc.
  • Cost effective – Having CPVC plumbing system is cost effective affair. You save on extra fittings, loops, anchors, insulation and labor charge too. Furthermore it lasts for mor than 50 years.

About the Author:

Hi! This is Nitin, founder of ContractorBhai.com. We provide Affordable 3D Interior Design Service


  1. C.N.Hebbar 8 December 2016 at 12:44 pm - Reply

    I wish the contractor located closeby to contact by teliphone initially

    • contractorbhai 9 December 2016 at 12:42 pm - Reply

      Sir, I don’t understand. Please call 9920620009. Thanks

  2. Anubahav 6 March 2017 at 10:19 am - Reply

    Sir, my plumber has provided me local GI fittings (union,sockets named as UFC and UFS).Is this cause leakage in future or will become a serious issue.

    • contractorbhai 7 March 2017 at 12:35 pm - Reply

      GI fittings if of good quality then will last for a very long time. If there is any further plumbing work, prefer CPVC items.

      MILLION DOLLAR SUGGESTION – once plumbing/piping is done – before plaster happens – take photograph & email it yourself for future reference. EVen after years, if something goes wrong, you will know internal plumbing structure.

  3. Vani 2 April 2017 at 1:00 am - Reply

    Our builder provided us with GI pipes and the building is now 10 years old. I’ve read that GI pipes last for around 40-50 years in ideal conditions. We get borewell and tanker water supply. Note – there is no reduced pressure or discoloration in the water. I understand GI pipes are more costly as compared to CPVC pipes. Now some residents say its time to get them replaced. How can we certify if they really need replacement?

  4. Mukesh 29 April 2017 at 4:52 pm - Reply

    Which pipe is better gi and cpvc

  5. Kartik 4 December 2017 at 11:37 pm - Reply

    Sir which one is better Cpvc or Upvc sanitary fittings for new house. Sir please reply fast.

    • contractorbhai 5 December 2017 at 2:19 pm - Reply

      cpvc or upvc will not matter much. cPVC pipes and connectors have evolved tremendously technically over years. For a new construction, make sure you use good quality branded plumbing supply.

  6. Salim khan 22 January 2018 at 11:21 pm - Reply

    Sir I am installing solar water heater and using cpvc 3/4″ pipe for outdoor on terrace and inside bathroom. I hope I have taken a good decision. Any further suggestions pls let me know for solar water heater system.

    • contractorbhai 23 January 2018 at 12:26 pm - Reply

      Salim ji, you should talk to local plumber & find out details about how to take measures. CPVC pipes are quite matured products, they are good, but good idea to confirm things with local plumber as they are aware of local issues.

  7. Nitin Shukla 23 January 2018 at 6:43 am - Reply

    Dear Nitin, first of all ley me congratulate you on making and maintaining this website, not let’s come to the questions, yes cpvc is good in many terms but the problem is with the jointing solution, does any of the jointing solution gives you the life of joint? What reaction will the solution give if treated with hot water? Will it not get hard and form cracks? Secondly do let me know which pipe should be used when we are taking the connection from the main line (nagar nigam pipe line)

    • contractorbhai 23 January 2018 at 12:24 pm - Reply

      CPVC pipes & solutions are quite matured product. We have known many homes using them over years & faces no problem. It is best idea to confirm this with local plumber. If particular area has these kind of crack complains then you need to take action accordingly. However in most cases these are extremely good products. Regarding main connection you need to check with local plumber. There are CPVC pipes available for such application as well, but confirm with local plumber.

  8. Shikha 5 July 2018 at 7:25 pm - Reply

    Which one is better sir cpvc or pvc pipes or stainless steel pipes?? Sir suggest me the best pipe as my plumber fitted gi pipes previously and it bursted due to rust sir plzz reply as soon as possible

    • contractorbhai 6 July 2018 at 2:09 pm - Reply

      cpvc pipes are way to go. These are more value for money products.

  9. Devendra 16 November 2018 at 3:22 pm - Reply

    When using plastic pipes for long time it’s may harm (cancer) ?

    • contractorbhai 22 November 2018 at 5:46 pm - Reply

      I have never heard any such reports on cpvc pipe, i believe it is safe.
      please do your own research. metals cause cancer too, breathing polluted air in metro cities causes cancer too.

  10. Sanjay 4 January 2019 at 10:00 pm - Reply

    Which is better gi or cpvc for house plumbing

  11. Sushil 3 February 2019 at 6:40 pm - Reply

    Which of the cpvc or GI is better as per cost view

  12. Nripjit 28 February 2019 at 10:10 pm - Reply

    Which is best brand for GI pipe to install

  13. Munish 8 March 2019 at 1:52 pm - Reply

    Any opinion about composite pipes? From Kitech or Sant Rifeng ?

    • contractorbhai 9 March 2019 at 12:32 pm - Reply

      Never used composite pipes please check & confirm with your team & local plumbers.

  14. Bhram 5 April 2019 at 2:35 pm - Reply

    Which pipes should be used for rooftops where they will be continuously exposed to sunlight?
    Our builder has used GI pipes on the rooftop and CPVC pipes going from top to every house. We want to do some re plumbing to change the scheme. I would like to know if GI pipes are OK to continue. For now, we don’t see any issues with them.

  15. Narinder 18 July 2019 at 4:17 am - Reply

    Sir I reside in J&K. As u know sr, it snows here. Temperature goes below freezing point in winter . Please tell me which pipes should I use GI or CPVC ??

    • contractorbhai 18 July 2019 at 3:41 pm - Reply

      Narinder, we really do not have information about this. Please talk to local Plumbing experts. We really do not have infomration about In extreme weather which type of plumbing works.

  16. Kamal Bhasin 24 July 2019 at 4:23 pm - Reply

    Sir I have got recommendation for using Viega Make SS pipes and fittings for my house under construction, as it offers very long trouble free life as well as very hygenic and absolutely no chance of scale / rusting. While GI pipes being coated with Zinc has chances of lead leaching into water as well as rusting issues. But price difference is huge. What do you recommend between these two.

  17. Kamal Bhasin 25 July 2019 at 4:07 pm - Reply

    sir i am getting recommendation of using SS pipes for my house under construction from my architect. I am looking for second opinion

    • contractorbhai 5 August 2019 at 3:43 pm - Reply

      SS pipes are good. CPVC pipes are now used because they are equally superior. If your architect is recommending something, may be he has some good reason about it, so go with Architects decision.

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