GI (Galvanized Iron) and GP (Galvanized Plain) pipes are widely used in construction, plumbing, and industrial applications due to their strength, corrosion resistance, and long service life. These pipes are manufactured from high-quality steel and coated with zinc to protect against rust and environmental
GI (Galvanized Iron) and GP (Galvanized Plain) pipes are extensively used in construction, plumbing, and industrial applications for their superior strength, corrosion resistance, and long-lasting performance. Manufactured from high-quality steel and coated with zinc, these pipes are designed to protect against rust and harsh environmental conditions, ensuring durability and reliability in both indoor and outdoor use.
GI vs GP Pipes
- GI Pipes: Heavier zinc coating, ideal for water supply and high-durability applications
- GP Pipes: Lighter zinc coating, commonly used for general fabrication, fencing, and non-pressure applications
Key Features
- Excellent corrosion and rust resistance
- High durability and long lifespan
- Strong and reliable under pressure
- Smooth internal surface for efficient flow
- Suitable for indoor and outdoor use
Applications
- Water supply and plumbing systems
- Agriculture and irrigation pipelines
- Structural support and scaffolding
- Fencing, railings, and fabrication works
- Industrial and commercial installations
- GP ROUND PIPE – SIZE & GAUGE CHART
| Size (Inch) | NB (mm) | OD (mm) | Gauge | Thickness (mm – approx) |
|---|---|---|---|---|
| ½” | 15 | 21.3 | 18 G | 1.2 mm |
| ¾” | 20 | 26.9 | 18 G | 1.2 mm |
| 1″ | 25 | 33.7 | 18 G | 1.2 mm |
| 1¼” | 32 | 42.4 | 16 G | 1.6 mm |
| 1½” | 40 | 48.3 | 16 G | 1.6 mm |
| 2″ | 50 | 60.3 | 14 G | 2.0 mm |
| 2½” | 65 | 76.1 | 14 G | 2.0 mm |
| 3″ | 80 | 88.9 | 12 G | 2.6 mm |
| 4″ | 100 | 114.3 | 10 G | 3.2 mm |
| 5″ | 125 | 141.3 | 10 G | 3.2 mm |
| 6″ | 150 | 168.3 | 8 G | 4.0 mm |
GP SQUARE PIPE – SIZE & GAUGE CHART
| Size (mm) | Size (Inch) | Gauge | Thickness (mm – approx) |
|---|---|---|---|
| 19 × 19 | ¾” × ¾” | 18 G | 1.2 mm |
| 25 × 25 | 1″ × 1″ | 18 G | 1.2 mm |
| 32 × 32 | 1¼” × 1¼” | 16 G | 1.6 mm |
| 40 × 40 | 1½” × 1½” | 16 G | 1.6 mm |
| 50 × 50 | 2″ × 2″ | 14 G | 2.0 mm |
| 65 × 65 | 2½” × 2½” | 14 G | 2.0 mm |
| 75 × 75 | 3″ × 3″ | 12 G | 2.6 mm |
| 100 × 100 | 4″ × 4″ | 10 G | 3.2 mm |
Notes
- Gauge (G): Lower gauge = thicker pipe
- Standard Length: 6 meters
- Finish: Pre-galvanized (GP)
- Use: Fabrication, gates, grills, sheds, fencing, structural works
✔ Why Choose GP Pipes?
GP pipes are pre-galvanized steel pipes, best suited for general and light structural applications.
- Economical and cost-effective
- Smooth and uniform zinc coating
- Easy to cut, weld, and fabricate
- Lightweight yet strong
- Ideal for dry and semi-exposed conditions
Why Choose GI Pipes?
GI pipes are hot-dip galvanized, offering superior corrosion resistance and durability.
- Thicker zinc coating for longer life
- High resistance to rust and moisture
- Suitable for outdoor and wet environments
- Strong and reliable for pressure applications
- Low maintenance and long service life
✔ Key Benefits of Choosing GP & GI Pipes
- Long-lasting and durable materials
- Available in wide size and gauge ranges
- Suitable for residential, commercial, and industrial use
- Cost-effective compared to stainless steel
- Readily available and easy to install
Common Uses:
Gates, grills, fencing, sheds, handrails, furniture, and fabrication works ,Water supply lines, plumbing, irrigation, scaffolding, and outdoor structures