Which water pipe is best for a house in Pakistan: PPR, uPVC or GI

The best water pipe in Pakistan for the supply lines inside a house is PPR (also sold as PPRC), joined by heat fusion, so each joint becomes one piece. Use PN20 for hot water and PN16 or uPVC for cold. Use uPVC for drainage and sewerage. Galvanized iron (GI) is the old choice: it rusts from the inside once its zinc coating wears off. As of 21 October 2026, PPR, uPVC pressure and PE water pipes are on PSQCA’s compulsory list, so look for the mark.

Below: which pipe goes where, what PN16 and PN20 mean, what to check on the pipe, and why we don’t print brand prices.

Which is the best water pipe in Pakistan for each job?

SNGPL wants the gas pipe inside your house laid by an SNGPL-enlisted contractor; see electricity and gas connection for a new house.

What is PPR pipe?

PPR is polypropylene random copolymer. The pipe and fitting are heated to about 260 C with a welding tool and pushed together, so each joint becomes one piece. IIL, which makes PPR, uPVC and GI pipe, lists hot and cold water in houses and hot water for boilers among its PPR uses.

PPR expands when it gets hot, so it needs clamps. IIL’s brochure spaces clamps 85 cm apart on a 20 mm cold line and 50 cm apart on a hot one with a 70 C difference, and says the design must allow for the pipe getting longer.

PN16 vs PN20: which do I need?

PN is the pressure class. A higher PN means a thicker wall: in IIL’s range, PN16 has a standard dimension ratio (SDR) of 7.4 and PN20 an SDR of 6. Heat lowers what a pipe can safely hold, which is why hot lines need the higher class.

Allowable operating pressure, from IIL’s PPRC brochure (undated, read 21 Oct 2026). At 95 C the table gives only 5 years: 4.9 bar for PN16 and 6.2 bar for PN20. IIL marks PN10 and PN25 as non-standard items.

Is uPVC pipe good for water supply?

For cold water, yes. PSQCA’s standard for uPVC pressure pipe is written for cold drinking water (PS 3051). PVC-U pressure pipe is rated to 60 C at most, a European supplier’s listing to ISO 1452 says, so keep it away from geyser lines. It is joined with solvent cement, not by heat.

uPVC is also the usual pipe for drainage: IIL lists plumbing, sewerage, rain drainage and irrigation among its uses, in sizes from 2 to 8 inches.

Is GI pipe still a good choice?

Not for water lines in a new house. GI pipe is steel coated with zinc: IIL dips it in molten zinc after forming, and makes it in light, medium and heavy grades to BS EN 10255 and ASTM A53. The zinc wears away over the years from minerals in the water, and the pipe then corrodes from the inside, a US water utility explains. The rust narrows the pipe, lowers the pressure, can turn the water brown and in the end leaks.

GI isn’t on PSQCA’s compulsory list (checked 21 Oct 2026), so there is no compulsory Pakistani mark to look for.

What should I check on the pipe?

PSQCA’s compulsory list covers these water and gas pipes, so each must meet the named Pakistan Standard (PS):

What is the PPR pipe price in Pakistan today?

We don’t print one. No maker publishes a dated price list we could read on 21 October 2026: IIL’s and Adamjee’s pages show no prices, and Master’s, Dadex’s and Popular’s websites didn’t open for us. Retail blogs post per-metre ranges, but they mix per-metre and per-length prices, so we left them out.

Compare like with like: the same size, PN class and maker from two dealers. Labour is easier to check. The Pakistan Bureau of Statistics (PBS) recorded a plumber’s daily wage in September 2026 at:

Plan the rest of the build

Avenir and Elegant Properties include underground water pipes in their grey structure scope, so check the pipe type in a builder’s written scope: see grey structure cost. For the other fit-out choices, see which electric wire brand to buy and which paint is best for a house.

More guides: house construction cost in Pakistan, construction material prices, roof waterproofing, Property.