Petrol Tank Manufacturing Processes
Material Preparation
Cutting and forming raw materials
Steel Tanks
- Sheets cut using laser/plasma cutting machines
- Hydraulic presses shape metal into tank halves
- Precision dimensions critical for proper welding
Plastic Tanks (HDPE)
- Granules melted and extruded into parison
- Blow molding creates complex shapes
- Integrated features molded directly
Assembly Methods
Joining components securely
Steel Tank Welding
- Robotic arc welding joins tank halves
- Creates strong, airtight seams
- Critical for preventing fuel leaks
Plastic Tank Assembly
- Hot plate welding for attachments
- Components like filler necks welded on
- Ensures leak-proof connections
Surface Treatment
Protecting against corrosion
Steel Tank Finishing
- Pickling process removes rust/scale
- Anti-corrosion paint or galvanization applied
- Enhances longevity in harsh conditions
Plastic Tank Finishing
- Trimming excess plastic from mold
- Smoothing of edges and surfaces
- No additional coating required
Quality Testing Procedures
Pressure & Leak Testing
- Filled with water/air at 3-5 psi
- Helium gas detects microscopic leaks
- Visual inspection for weld flaws
Structural Integrity Tests
- Burst tests for plastic tanks
- Checks extreme pressure resistance
- Ensures no rupture points
Final Assembly & Inspection
- Addition of sensors and baffles
- Mechanical fasteners or adhesive bonding
- Final quality check before shipping