Squid and Octopus Squid and octopus account for a large proportion of Vietnam's seafood export turnover to demanding markets such as Japan, South Korea, the EU, and Taiwan. The biological characteristics of squid and octopus include high water content and sensitive skin pigmentation; if the freezing and storage process is not up to standard, it will lead to skin redness, membrane rupture, mushy flesh, and weight loss due to ice sublimation (drip loss). Tan Long Design and construction of contact freezer systems, IQF blast freezers, and cold storage warehouses. -22°C to -25°C HACCP standards help businesses optimize export value.
🏢 Tan Long General Contractor's Practical Implementation Capabilities
Tan Long has implemented a series of cold storage and freezing line projects for marine seafood:
- Ca Mau Clean Seafood Processing Complex: Large-scale cold storage system with high-efficiency NH3 screw compressors.
- Famisea Food & Saigon Seafood Joint Stock Company: Contact block freezing line and -40°C blast freezer.
- AJ Total & NECS Cold Storage Logistics: We store tens of thousands of tons of imported and exported seafood that have received international safety certifications.
1. Technical Standards for Freezing and Glazing Squid and Octopus
- Contact Freezer: Suitable for export-grade squid and cuttlefish in 1kg-2kg blocks. The hydraulic pressure of the plates increases the heat contact area, allowing for freezing in just 1.5-2.5 hours to reach a core temperature of -18°C.
- IQF (Individual Quick Freezing): Applicable to button squid, cut-up octopus, or whole cleaned octopus (Flower Octopus) served in sashimi/grill restaurant chains. The squid are separate and not clumped together.
- Protective Glazing Technology (Glazing 5% – 8%): Immediately after removing the product from the freezer, a super-thin layer of pure water at 0°C – 1°C is sprayed onto it. This ice coating completely prevents "freeze burn," resists lipid oxidation, and preserves the natural, bright metallic sheen of the ink.
2. Design of a Freezer Storage Facility for Squid and Octopus (-22°C to -25°C)
| Technical Components | Tan Long Construction Specifications | B2B Operating Benefits |
|---|---|---|
| Warehouse insulation panels | 150mm PIR panel, density 42-45 kg/m³, Colorbond steel or 304 stainless steel. | Resistant to seawater corrosion, minimizes heat loss. |
| Compressor system | Bitzer/Mycom/Kobelco compressor unit, Evaporative Condenser | High COP, saving 20–30% of monthly operating electricity. |
| Evaporator & Defrost | Ceiling-mounted indoor unit with aluminum fins and copper/stainless steel tubing, automatic hot gas defrosting. | Room temperature does not fluctuate significantly during the defrost cycle. |
| Warehouse doors & Air curtains | 304 Stainless Steel Electric Sliding Door with Heating Element and High-Speed Air Curtain Fan | No condensation or freezing of the door during continuous loading and unloading of goods. |
Is your business in need of constructing a seafood freezing warehouse or IQF conveyor belt system?
Tan Long provides complete industrial refrigeration solutions: blast freezers, ultra-low temperature freezers from -25°C to -60°C (Japanese Sashimi standard), and ultra-fast IQF conveyor systems, preserving cell tissue structure and meeting export standards such as HACCP, EU Code, and US FDA.
Engineer Nguyen Toan Thinh (Technical Director)
With over 18 years of practical experience in directing, consulting, designing, and constructing heavy industrial refrigeration systems, ASRS automated warehouses, and IQF freezing systems across more than 29 major national projects.
