Municipal infrastructure projects require a delicate balance between budget control, long-term durability, and engineering compliance. In developing regions such as Peru, government-funded water supply projects often face strict cost constraints while maintaining high performance standards.
This case study demonstrates how a Peruvian contractor successfully optimized their pipeline design by adopting Schedule 20 galvanized steel pipe, achieving 22% cost reduction, while ensuring reliable water distribution across a large urban area.
Project Background
Project Location: Lima, Peru
Project Type: Municipal Water Supply Network
Customer Type: Government EPC Contractor
Project scope included:
Urban water distribution pipelines
Secondary branch pipelines
Infrastructure upgrade for residential areas
Key requirements:
Stable water delivery
Long service life
Budget compliance for government tender
Customer Pain Points
1. Strict Government Budget Control
Fixed project funding
No flexibility for overspending
👉 Original design (SCH 40):
Exceeded budget by ~20%
2. Mixed Pressure Requirements
Pipeline system included:
Main pipelines (high pressure)
Secondary pipelines (low pressure)
👉 Using SCH 40 everywhere = inefficient design
3. Corrosion Risk in Urban Environment
Underground installation
Moist soil conditions
👉 Risk:
Pipe corrosion
Maintenance cost increase
4. Supply Stability Requirement
Large quantity demand
Tight construction schedule
Our Solution
We proposed a graded pipeline optimization strategy:
✔ SCH 40 for Main Pipelines
✔ Schedule 20 Galvanized Steel Pipe for Secondary Lines
👉 Engineering-based cost optimization
Technical Specification Table
| Parameter | Specification |
|---|---|
| Product | Municipal Galvanized Steel Pipe |
| Standard | ASTM A53 / ASTM A795 |
| Sizes | 2" – 6" (DN50–DN150) |
| Outer Diameter | 60.3 – 168.3 mm |
| Wall Thickness | 2.77 – 3.40 mm |
| Length | 6 meters |
| Surface | Hot Dip Galvanized |
| Zinc Coating | ≥ 70 μm |
| Quantity | 150 Tons |
Engineering Optimization Strategy
1. Pipeline Classification Design
| Pipeline Type | Pipe Selection |
|---|---|
| Main Line | SCH 40 |
| Secondary Line | SCH 20 |
👉 Avoid overdesign and reduce cost
2. Cost Efficiency Improvement
| Item | Traditional Design | Optimized Design |
|---|---|---|
| Pipe Type | All SCH 40 | Mixed SCH 20 + SCH 40 |
| Cost | High | ↓ 22% |
| Efficiency | Lower | Higher |
3. Corrosion Protection
Hot dip galvanizing
Suitable for:
Underground use
Humid environments
4. Supply Chain Optimization
Bulk production planning
Stable delivery schedule
Installation Optimization
Traditional Approach:
Heavy pipes
Slow installation
Optimized Approach:
SCH 20 for easier handling
Faster installation
👉 Reduced labor intensity
Project Execution Timeline
| Stage | Duration |
|---|---|
| Engineering Adjustment | 5 days |
| Production | 15 days |
| Galvanizing | 7 days |
| Shipping | 30 days |
👉 Total Lead Time: ~55 days
Final Results
💰 Cost Reduction
Total saving: 22%
Within government budget
⚡ Installation Efficiency
Faster installation for secondary pipelines
Reduced labor cost
🛡️ Reliability
Stable water system operation
Corrosion-resistant performance
📦 Project Success
Passed government inspection
Delivered on schedule
Customer Feedback
"The mixed pipe solution helped us stay within budget without sacrificing quality. It was an excellent engineering optimization."
Why SCH 20 Pipe is Ideal for Municipal Projects
Cost-effective for large-scale networks
Suitable for secondary pipelines
Corrosion resistant
Easy to install
FAQ Section
1. Can SCH 20 pipe be used in municipal water systems?
Yes, especially for secondary or low-pressure pipelines.
2. Why combine SCH 20 and SCH 40?
To optimize:
Cost
Performance
Engineering efficiency
3. Is galvanized pipe suitable for underground use?
Yes, with proper coating, it provides good corrosion resistance.
4. What is the lifespan of galvanized pipe?
Typically 10–20 years, depending on soil and environment.
Call To Action
Looking for a reliable galvanized steel pipe supplier for municipal or infrastructure projects?
✔ Engineering optimization support
✔ ASTM standard products
✔ Bulk supply capability
✔ Stable delivery
👉 Contact us now for a project-based quotation and technical solution
+8615769214734
office@dongmjd.com
