Galvanized iron pipe, commonly called GI pipe, is used across the Philippines for plumbing lines, fence posts, scaffolding and light structural framing. Its zinc coating protects the steel underneath from rust, which makes it suitable for both indoor and outdoor applications.
GI pipes are typically sold in standard 6 meter lengths, with price scaling by diameter and wall thickness. The table below lists common sizes used in residential and light commercial projects.
GI Pipe Price List Philippines (Per 6 Meter Length)
| Item | Size / Specification | Price Range (PHP) |
|---|---|---|
| GI Pipe | 1/2 inch diameter, Schedule 40 | P950 to P1,400 |
| GI Pipe | 3/4 inch diameter, Schedule 40 | P1,300 to P1,900 |
| GI Pipe | 1 inch diameter, Schedule 40 | P1,900 to P2,700 |
| GI Pipe | 2 inch diameter, Schedule 40 | P3,800 to P5,500 |
| GI Pipe | 4 inch diameter, Schedule 40 | P9,500 to P14,000 |
Prices above are indicative market ranges gathered from Philippine hardware retailers and suppliers as of 2026. Actual prices vary by brand, region and order volume. Contact us at sales@citizenflanges.com for a current quote.
What Affects GI Pipe Prices
- Pipe diameter, since larger diameter pipes use significantly more steel per length
- Wall thickness or schedule rating, as thicker walled pipe costs more but withstands higher pressure
- Global steel prices, since the Philippines imports a large volume of steel raw material
- Brand and manufacturing origin, as locally milled pipe can be priced differently from imported stock
- Order volume, since contractors buying in bulk for large plumbing or fencing projects often get better rates
Buying Tips Before You Purchase GI Pipe
- ✓ Confirm the schedule rating you need based on whether the pipe will carry water pressure or just serve structurally
- ✓ Inspect pipe ends for proper threading if you plan to use threaded fittings
- ✓ Buy a few extra lengths to account for cutting waste and future repairs
- ✓ Compare per length pricing across suppliers, since GI pipe rates can shift with steel market movements
FAQ's
A standard 6 meter GI pipe ranges from about P950 for a 1/2 inch diameter pipe up to P14,000 or more for larger 4 inch diameter pipe, with price scaling directly with diameter and wall thickness.
Most residential water lines use 1/2 inch to 1 inch diameter GI pipe, while larger diameters are typically reserved for main lines or structural applications like fencing and scaffolding.
GI pipe prices are tied closely to global steel and zinc prices, along with import costs, so rates can shift week to week depending on market conditions.
Yes, the galvanized zinc coating on GI pipe is designed to resist corrosion in outdoor conditions, though the coating can wear down over many years of exposure, especially in coastal areas.