General Infrastructure Water Supply

Scenario 3: General Infrastructure Water Supply (Suitable for Village/Community Projects)

1. Core Requirements & Product Selection

 Low-cost & Durability Key: Low-cost fittings and durable valves are required for infrastructure. We integrate resources from over 5 hot-dip galvanized fitting manufacturers in China. Regular models (hot-dip galvanized, zinc layer ≥65μm, corrosion-resistant, DN25–DN150) are in sufficient stock and ship within 10 days. For projects requiring special color coatings (e.g., identification colors), we can coordinate 30-day customization with Chinese manufacturers and provide color adhesion test reports for easy identification.

 Product Specification Matching:

Village Branch Connection: DN25–DN50 threaded fittings (elbows, straight joints, suitable for household inlet). Chinese manufacturers produce threads with accuracy meeting international standards.

Village Main Water Supply Connection: DN100–DN150 flange fittings (suitable for village water supply, easy flange maintenance).

Valve Selection: Cast iron ball valves (DN25–DN50) for villagers (easy to operate); cast iron gate valves (DN100–DN150) for main lines (durable). Based on infrastructure budgets, we match cost-effective products from Chinese manufacturers to reduce overall costs.

 Material Assurance: Fittings are uniformly made of Q235B carbon steel (no sand holes or incomplete welding). Chinese manufacturers conduct appearance inspections for each batch to ensure basic quality.

2. Construction & Acceptance Standards

 Installation Specifications:

Avoid damaging zinc layers of galvanized fittings (protect with rubber pads); wrap threads with Teflon tape.

Install valves with handwheles for easy operation; avoid heavy impacts (cast iron valves are brittle). We provide infrastructure installation guides from Chinese villages for your team’s operation.

 Key Acceptance Indicators:

Flow Test: Main line flow ≥80m³/h (ensures sufficient village water supply).

Sealing Test: Maintain 0.6MPa water pressure for 12 hours with no leakage. We provide infrastructure project acceptance checklists from China to support your project.

3. Common Issues & Solutions

· Issue 1: Fitting zinc layers rust in rainy seasons.

Solution: Apply outdoor waterproof paint (included with shipments, waterproof paint from Chinese manufacturers with strong water resistance, 3% cost increase); or select "galvanized + passivated fittings" (8% more expensive than regular galvanized fittings, sufficient stock from Chinese manufacturers) with 2x better salt-fog corrosion resistance.

· Issue 2: Valve wear due to impurities in water supply sources.

Solution: Install "simple filter fittings" before valves (sufficient stock from Chinese manufacturers, 5% cost increase); clean filters regularly (cleaning guide provided). For wear-resistant valve cores, 30-day customization can be coordinated with Chinese manufacturers to produce cores using wear-resistant materials.