Engineering Design
Fluid Optimization Design
45° Golden Corner Design, reducing pressure loss by 65% compared to 90° elbows
1.5D Optimized Elbow Curvature Radius to Avoid Turbulence
Inner Wall Machining, Roughness Ra≤6.3μm
Reinforced Structure
Gradually Variable Wall Thickness Technology on the Outer Arc Surface for Uniform Stress Distribution
Smooth Transition of Reinforcing Ribs to the Main Body, Enhancing Impact Resistance
Finite Element Analysis Optimization, 40% Increase in Pressure Bearing Capacity
Protection System
Full Immersion Electrophoretic Protection
360° Epoxy Electrophoretic Coating, 40-50μm Thickness
Salt Spray Resistance ≥1200 Hours, Achieving C5 Corrosion Resistance Rating Coating adhesion grade 0, impact resistance ≥50kg·cm
Technical Specifications
Material: Malleable cast iron
Working pressure: 4.0MPa (PN40)
Applicable temperature: -30℃～130℃
Size range: 1/2"～4" full series
Angle tolerance: ±0.5°
Coating system: Epoxy electrophoretic primer + polyurethane topcoat
Applications
Chemical piping: Smooth turning connections for corrosive media
Marine systems: Piping layouts in ship cabins with limited space
HVAC engineering: Low-resistance turning of air conditioning water systems
Environmental facilities: Piping systems in wastewater treatment plants
Installation Guide
① Confirm the medium flow direction is consistent with the elbow direction.
② Use a nylon-coated wrench to avoid coating damage.
③ It is recommended to mark the flow direction after installation.
④ Add pipe support at 1.5 times the pipe diameter at the elbow outlet.
⑤ Pressure test: Hold at 1.5 times the working pressure for 30 minutes.
Quality Control: 100% magnetic particle inspection of castings.
Angle accuracy measured by coordinate measuring machine.
7.2MPa water pressure burst test.
Coating thickness uniformity test (12 points measured per piece).
1000-hour accelerated acid salt spray test.
