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20FT Iso Tank Container

20FT ISO Tank Containers for Hazardous & Non-Hazardous Liquids

 

20FT ISO tank containers built to ASME, ISO 1496-3, and UN Portable Tank specifications (T11, T14, T50, T75). Constructed with 316L stainless steel or lined shells, these pressure vessels transport hazardous chemicals, food-grade liquids, and liquefied gases across sea, rail, and road networks.

 

 
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Technical Specifications

Parameter

Standard T11 Chemical Tank

Food-Grade Tank Container

High-Pressure / Lined Tank

Nominal Capacity

24,000 L – 26,000 L

25,000 L – 27,000 L

17,500 L – 24,000 L

Frame Dimensions (L x W x H)

6,058 x 2,438 x 2,591 mm (20' x 8' x 8'6")

6,058 x 2,438 x 2,591 mm

6,058 x 2,438 x 2,591 mm

ISO Size/Type Code

22K2 / 22T6

22K2

22T6 / 22T8

Maximum Allowable Working Pressure (MAWP)

4.0 bar (58.0 PSI)

4.0 bar (58.0 PSI)

6.0 bar – 10.0 bar

Test Pressure

6.0 bar (87.0 PSI)

6.0 bar (87.0 PSI)

9.0 bar – 15.0 bar

Design Temperature Range

-40°C to +130°C

-20°C to +120°C

-40°C to +150°C

Shell Material

SANS 50028-7 / 1.4404 (316L)

AISI 316L (Electropolished)

Carbon Steel + PTFE / PE Lining

Nominal Shell Thickness

4.4 mm – 4.8 mm + corrosion allowance

4.2 mm – 4.5 mm

6.0 mm + 3 mm lining

Tare Weight

3,500 kg +/- 3%

3,350 kg +/- 3%

4,200 kg – 5,100 kg

Max Gross Weight (MGW)

36,000 kg

36,000 kg

36,000 kg

Max Payload

~32,500 kg

~32,650 kg

~31,000 kg

Insulation & Cladding

50 mm Rockwool / Polyurethane + GRP/SS Cladding

50 mm Polyurethane + 2 mm GRP Cladding

Optional

Heating System

6-run longitudinal steam heating channels (4.0 m² area)

Steam or Electrical glycol trace heating

N/A or Specialized steam lines

Valves & Accessories

Fort Vale 3" 45° Foot Valve, 3" Butterfly/Ball Valve

Fort Vale Sanitary Top/Bottom Valves

Perolo / Fort Vale Lined Top Discharge Assembly

Relief Valve (PRV)

3" BSP Fort Vale Pressure/Vacuum Relief Valve

3" Sanitary Relief Valve

High-pressure dedicated safety valve

 

Primary Applications

 

Chemical & Petrochemical

Solvents, resin intermediates, plasticizers, Isocyanates (TDI/MDI), acids, alkalis, and industrial lubricants.

Food & Beverage Logistics

Bulk wine, spirit alcohol, fruit juice concentrates, edible oils, sorbitol, liquid sweeteners, and milk products.

Energy & Gas Distribution

Anhydrous ammonia, LPG, LNG, industrial refrigerants, and liquid nitrogen.

 

Hazardous Waste Management

Transportation of toxic liquid waste and liquid hazardous substances under UN regulations.

 

20FT Liquid Oxygen ISO Tank Container T75 LOX

 

Customization Options

Capacity Adjustments: Custom shell volumes from 14,000 L to 35,000 L (SWAP body variants).

 

Internal Coatings & Linings: Rubber lining, PTFE/FEP, ETFE, ChemLine, or Phenolic epoxy for highly corrosive media.

 

Heating & Temperature Control:

  • High-efficiency steam heating panels (up to 8 m² contact area).
  • Electric glycol heating or fully automated thermal insulation systems.
  • Refrigeration units fitted on specialized tank frames.

 

Baffle Configurations: Single, double, or triple transverse surge baffles for high-density liquid stability.

 

Valve Options: Fort Vale, Perolo, or Girard equipment (manual, pneumatic, or remote-actuated foot valves).

 

Frame & Coating Upgrades: Hot-dip galvanized structural frame, C5-M marine heavy-duty epoxy paint system, non-slip full walkway, and folding safety handrails.

 

Manufacturing Quality & Compliance

Our dedicated pressure vessel facilities feature automated submerged arc welding (SAW) and longitudinal shell welding stations to minimize material fatigue and stress concentrators.

ISO TANK MANUFACTURING QUALITY FLOW

 

Plate Inspection (316L PMI & Ultrasonic) --> 2. Automatic Shell Welding (Longitudinal & Circumferential) --> 3. Non-Destructive Test (100% X-Ray / Radiography)


Final Certification <-- 5. Pressure & Leak Test (Air / Nitrogen Tightness) <-- 4. Hydrostatic Testing (1.5x Working Pressure)

 

Material Traceability: 100% Positive Material Identification (PMI) on all SS 316L plates and pipe fittings with mill test certificates (EN 10204 3.1).

 

Non-Destructive Testing (NDT): 100% Radiographic Testing (RT) on shell longitudinal seams; Penetrant Testing (PT) on nozzle and frame attachments.

 

Pressure Testing: Hydrostatic testing executed at 1.5x MAWP; pneumatic leak test conducted at 1.0 bar before factory release.

 

Surface Treatment: Automated shot blasting to SA 2.5 on steel frames; internal shell pickling and passivation according to ASTM A380 standards.

 

 

Our Certificate

 

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FAQ

 

Q: What is the difference between a UN T11 and UN T14 ISO tank container?

A: A T11 tank is designed for bottom-discharge transportation of general hazardous and non-hazardous liquids under an MAWP of 4.0 bar. A T14 tank is designed for high-hazard or severely corrosive liquids (like acids); it features top-only discharge connections with no bottom openings, eliminating potential leak points below the liquid level.

Q: How do I choose between a 24,000 L and a 26,000 L tank container?

A: Selection depends on product specific gravity (density) and maximum gross weight limits (typically 36,000 kg). High-density liquids (e.g., caustic soda or heavy acids) reach maximum weight limits in smaller volumes (17,500 L – 21,000 L). Lighter solvents or edible oils utilize 25,000 L – 26,000 L tanks to optimize freight economics per trip.

Q: Are your tank containers suitable for food-grade liquids?

A: Yes. Food-grade units feature electropolished or mechanically mirror-polished internal surfaces (Ra <= 0.4 um), eliminating crevices where bacteria can harbor. They use food-grade gaskets (PTFE / Silicone certified to FDA regulations) and are fitted with dedicated sanitary valve manifolds.

Q: What heating capabilities are built into these tanks?

A: Standard chemical tanks include 6-run longitudinal steam heating channels welded to the lower shell, providing 4.0 m² of heat transfer area. Electric glycol heating or glycol trace lines are available for heat-sensitive cargoes requiring precise temperature maintenance during transit.

Q: What documentation is delivered with the tank container?

A: Every tank container is shipped with a complete Manufacturer's Data Package (MDP), including:
Third-party inspection certificate (BV, LR, or DNV)
ASME Data Report (if applicable)
Initial 2.5-year and 5-year pressure test certificates
Mill Test Certificates (EN 10204 3.1) for shell plates and main flange materials
NDT (Radiography/Penetrant) inspection reports
Cleanliness / Passivation certificates

Q: What is the standard lead time for OEM or fleet orders?

A: Standard T11 / T14 ISO tank configurations have a manufacturing lead time of 4 to 6 weeks. Customized units with specific internal linings (e.g., PTFE), special valve brands, or custom capacities require 6 to 8 weeks depending on raw material availability and third-party inspection schedules.

As one of the most professional 20ft iso tank container manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy advanced 20ft iso tank container in stock here from our factory. We also accept customized orders.

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