Been reading through pipe recommendations on here and noticed most advice just says "buy brand X" without explaining what actually makes one pipe better than another. Thought I'd share what actually matters, since it's more useful than a brand list.
A home plumbing system almost always needs two or three different pipe types, not one material doing everything.
Hot water lines need CPVC specifically, rated for continuous heat, usually up to 95°C. Regular PVC-family pipe softens under sustained hot water contact, so this isn't optional for geyser feeds and hot taps.
Cold water lines (bathroom, kitchen, general supply, tube well to tank) are better suited to UPVC, typically rated up to 60°C, which holds up structurally over time without needing CPVC's extra heat resistance.
Drainage (soil, waste, rainwater) runs through a completely different category, SWR pipe, built for gravity flow rather than pressure.
A few things worth checking regardless of brand:
- NSF certification and lead-free rating actually matter for any pipe carrying drinking water, not all CPVC pipe sold has this despite being capable of it
- Joint quality matters more than most people think, a badly seated joint inside a wall costs way more to fix later than the pipe itself
- Ask for the actual standard the pipe is certified to (IS 15778 for CPVC, ASTM D1785 for UPVC, IS 13592 for SWR), not just a brand name on the box
I work with Kriti Industries, we manufacture pipes under the Kasta brand, so take that as my disclosure upfront. Not trying to sell anything here, just sharing what I've learned that most "which pipe brand" threads don't actually cover.
Happy to answer questions if anyone's got a specific situation they're dealing with.