1. What the Factory Test Covers
The 3 mm wet-type fish feed pellet maker test is a factory testing process where the extruder is operated with real aquatic feed formulas to verify 3 mm pellet-forming accuracy, floating performance, steam-conditioning stability and continuous extrusion efficiency before delivery or commercial production.
2. Why 3 mm Pellet Testing Matters
3 mm floating pellets are used for juvenile tilapia, medium-growth fish stages and intensive pond farming.
Pellet size consistency affects: feeding efficiency, feed conversion ratio (FCR), floating stability in water, and feeding competition behavior.
3. The Wet-Type Principle
A wet-type fish feed extruder uses external steam conditioning before extrusion: steam and moisture soften the raw materials before they enter the extrusion chamber. This improves starch gelatinization, pellet expansion, floating stability and feed digestibility - the key difference from dry-type machines.
4. The Six-Step Test Process
- Raw material preparation: corn flour, soybean meal, fish meal, wheat flour, vitamin premix; check fineness, moisture ratio and formula consistency.
- Steam conditioning: monitor steam injection balance, material softening and temperature stability before extrusion.
- Extrusion pressure stability: materials compress, temperature rises, expansion begins before discharge; verify stable pressure, smooth flow, no barrel blockage.
- 3 mm pellet forming: check exact diameter, roundness, surface smoothness and cutting precision.
- Floating test in water: test immediately after production - floating duration, pellet integrity, resistance to fast disintegration.
- Continuous running stability: operate under load; check steam balance, extrusion continuity, motor temperature, pellet consistency over time.
5. Factory Test Data (Manufacturer-Reported)
| Item | Result |
|---|---|
| Machine type | Wet-type floating fish feed pellet maker |
| Pellet size | 3 mm |
| Floating rate | ≥95% (factory test) |
| Capacity | 300-1000 kg/h |
| Application | Tilapia & freshwater fish feed |
6. Common Problems Checked
- Uneven 3 mm pellet size: unstable extrusion pressure, inconsistent cutting speed.
- Pellets sink too quickly: insufficient starch gelatinization, poor steam conditioning.
- Pellet cracking: incorrect moisture balance, unstable drying conditions.
Bottom Line
Factory testing with real formulas verifies what the specification sheet cannot: does the machine hold 3 mm tolerance, float ≥95% of pellets, and run continuously? Buyers should request test reports and, where possible, witness a trial run with their own formula before accepting delivery.
Company Profile
