Standard ISO tank containers

A standard ISO tank container is a single‑compartment intermodal tank designed to carry bulk liquids within a 20‑ft ISO frame. Core elements and specs:

• Vessel and materials
  • 316L stainless‑steel cylindrical shell with dished ends, optimized for corrosion resistance across a broad SDS portfolio. Typical design pressure ~4 bar for T11 service; hydrostatic test pressure usually 4–6 bar.
  • Internal finish suitable for food or chemical duty; food‑grade variants target Ra ≤ 0.8 µm and are CIP‑ready.
• Frame and standards
  • 20‑ft ISO frame (≈6,058 × 2,438 × 2,591 mm) with corner castings to ISO 1496 for universal lifting, stacking, and twistlock engagement. CSC plated for international carriage.
• Approvals and inspection regime
  • UN portable tank approval matched to duty (commonly T11 for general food/chemicals). Periodic examinations per IMDG/ADR/RID: intermediate at ~2.5 years, thorough at ~5 years. PRV settings and capacity documented.
• Connections and safety
  • DN500 manlid for access; bottom outlet 2–3" with primary product valve and secondary closure; sample valve, thermowells for temperature probes. PRV typically set around 4.0–4.4 bar sized for credible heat/load scenarios.
• Options within the “standard” family
  • Insulation: polyurethane foam 50–100 mm (overall U‑value when new ~0.3–0.4 W/m²K) for passive temperature control.
  • Heating: steam coils or electric/hot‑water tracing to maintain +20–50°C for viscous cargoes.
  • Baffling: internal baffles available where surge control or partial loads are expected.

Operationally, the tank loads once at origin, seals, and discharges at destination, with fewer transfers than drums/IBCs. Cleaning is performed at certified depots with validated CIP cycles; documentation (wash certificates, prior cargo declarations) underpins QA. This simplicity is why the format dominates for edible oils, glycols, surfactant blends, alcohols, and many industrial liquids that don’t require active refrigeration.

A standard ISO tank streamlines bulk liquid logistics by combining safety, efficiency, and compliance in one interchangeable asset.

• Fewer touchpoints, better product integrity
  • One sealed vessel from fill to discharge reduces contamination risk versus multi‑container solutions. CIP‑validated cleaning and documented prior cargo lists support audits and customer QA expectations.
• Intermodal efficiency
  • The 20‑ft frame slots into existing road/rail/sea networks. No repacking between modes; fewer handlings mean fewer opportunities for error and damage.
• Throughput at loading and discharge
  • Standardized bottom outlets and known pump curves simplify bay setups. For many liquids, pump rates around 20–30 m³/h are achievable depending on viscosity, head, and line size, tightening scheduling at terminals.
• Safety and compliance clarity
  • Defined design pressure, PRV settings, and periodic exam cadence give a traceable safety margin. Alignment with IMDG/ADR/RID keeps international moves straightforward.
• Payload and footprint balance
  • Nominal 24,000–26,000 L capacity fits within road weight limits on common lanes while maximizing cargo per slot versus drums/IBCs. Predictable tare supports accurate load planning.
• Flexibility via options
  • The same platform supports insulation, heating, or baffles as needed—so a single fleet standardizes training and spares while covering diverse cargo needs.
• Sustainability in practice
  • Reusable stainless construction avoids single‑use plastics from drums/flexitanks and cuts waste. Fewer rejects and less repacking translate to lower embodied emissions per delivered tonne.

Teams see the payoffs in fewer claims, smoother inspections, and tighter timetables. When paired with disciplined documentation—wash certs, prior cargo declarations, and valve/gasket maintenance logs—operations stay predictable across seasons and routes.

They are used for transporting bulk liquids that do not require active refrigeration and can be safely carried under T11‑type conditions, with optional insulation or heating depending on the product. Common applications:

• Food and beverage ingredients
  • Edible oils, glucose/fructose syrups, liquid sweeteners, wine musts, and juice concentrates. Food‑grade finish (Ra ≤ 0.8 µm), food‑contact gaskets, and validated CIP make changeovers clean and audit‑ready. Insulation or gentle heating helps maintain pumpable viscosity.
• Chemicals and specialties
  • Glycols, surfactant blends, detergent bases, alcohols, and certain permitted solvents per SDS compatibility. Standard stainless and elastomer selections (EPDM, PTFE, FKM) are chosen to match chemistry and temperature.
• Industrial/process fluids
  • Coolant concentrates, water‑treatment solutions, lubricant base stocks, and process oils where corrosion resistance and clean discharge are priorities.
• Regional and long‑haul intermodal
  • Road pickup, rail line‑haul, and sea legs in one container, reducing handling and repacking. With insulation/heating, winter or cool‑climate corridors remain manageable for viscosity‑sensitive cargo.
• Campaign operations with repeatable cleaning
  • Where you rotate product families, a standard ISO tank with documented wash procedures preserves schedule reliability and reduces cross‑contamination risk.

If your liquid’s stability window is compatible with T11 parameters and your priority is safe, clean, and efficient intermodal movement in a universal footprint, standard ISO tanks are the dependable baseline under tankcon.com’s specification—easy to plan, simple to audit, and proven across industries.

Standard ISO tanks share the 20‑ft intermodal footprint but differ by duty, hygiene level, thermal control, and motion behavior. Choosing the right type hinges on your cargo’s chemistry, viscosity–temperature curve, and route dynamics.

• Stainless T11 single‑compartment (baseline)
  • 316L stainless‑steel vessel, design pressure ~4 bar, hydrostatic test 4–6 bar. Universal interfaces: DN500 manlid; 2–3" bottom outlet with primary/secondary closures; PRV ~4.0–4.4 bar.
  • Suited to a wide SDS range: edible oils, glycols, surfactant blends, alcohols, many process liquids.
• Food‑grade variant
  • Polished interior finish targeting Ra ≤ 0.8 µm; validated CIP (spray‑ball coverage mapping, riboflavin tests); food‑contact gaskets per EC 1935/2004 and FDA.
  • Built for clean changeovers between food families with audit‑ready wash certificates and prior‑cargo declarations.
• Chemical‑grade variant
  • Elastomer sets aligned to chemistry (EPDM, PTFE, FKM), corrosion‑resistant weld procedures/passivation, PRV/venting sized for credible heating scenarios.
  • Deployed for glycols, detergents, surfactants, and permitted solvents after compatibility checks.
• Insulated ISO tank
  • Polyurethane foam insulation 50–100 mm; overall U‑value when new ~0.3–0.4 W/m²K. Limits heat gain/loss on long sea legs and exposed terminals.
  • Reduces temperature drift so viscosity and discharge rates stay predictable without active cooling.
• Heated ISO tank
  • Steam coils or electric/hot‑water/glycol tracing to maintain ~+20–50°C for viscous cargoes. Insulated valve boxes mitigate cold‑spot thickening near outlets.
  • Shortens unloading for products whose pumpability depends on temperature (e.g., fatty cargoes).
• Baffled ISO tank
  • Internal baffle plates with radiused apertures damp slosh, improving safety and pump suction stability—especially at ~60–90% fill for multi‑drop routes.
  • Used where partial loads and stop‑start urban legs are common.
• Special designs (by exception)
  • Higher‑pressure ratings or special alloys (e.g., 316Ti, duplex) for demanding chemistries. Less common but available when SDS demands it.

Selection pointer: start with SDS compatibility and thermal needs, then refine by route behavior. If you run partial fills or multi‑drop distribution, baffles pay back in handling and discharge stability; if viscosity is your bottleneck, prioritize heated + insulated builds with documented watt density and even heat distribution.

The external envelope is standardized for intermodal interchange; internal geometry and options influence capacity, weights, and clearances you’ll plan around.

• External frame (typical 20‑ft)
  • Length: ~6,058 mm (20 ft)
  • Width: ~2,438 mm (8 ft)
  • Height: ~2,591 mm (8 ft 6 in); some high‑cube frames ~2,896 mm (9 ft 6 in) exist for specific builds
  • Handling: corner castings to ISO 1496, fork pockets, lifting lugs; CSC plated
• Internal tank and capacity
  • Nominal volume: ~24,000–26,000 L for most standard builds (capacity varies with dome geometry, insulation thickness, and baffle presence)
  • Vessel: 316L stainless cylinder with dished ends; typical design pressure ~4 bar; hydrostatic test 4–6 bar
  • Manlid: ≈DN500; bottom outlet: 2–3" with primary valve + secondary closure; sample valve and thermowells common
• Weight and payload planning
  • Tare mass: ~3,800–5,200 kg depending on insulation, heating, baffles
  • Maximum gross weight (MGW): up to ~36,000 kg subject to certification/route limits
  • Planning example: 25,000 L at 1.00 kg/L ≈ 25,000 kg product + ~4,500 kg tare → ~29,500 kg gross, leaving margin under 36,000 kg MGW; denser liquids (≥1.10 kg/L) require ullage and axle checks
• Thermal performance (where fitted)
  • Insulation: polyurethane foam 50–100 mm; overall U‑value ~0.3–0.4 W/m²K when new; aging increases heat flux and energy use
  • Heated units: confirm coil surface area or trace watt density; insulated valve boxes reduce outlet cold spots
• Practical clearances and interfaces
  • Outlet centerline height from ground affects gravity priming and hose routing—verify against your bay geometry
  • PRV setpoint typically ~4.0–4.4 bar with capacity sized for credible heat input
  • Power inlets on heated variants; ship/shore connections standardized for safe operations

Two small dimensional checks save time: make sure outlet height suits your pump suction setup, and confirm frame height for ship slotting (standard vs high‑cube) to avoid last‑minute re-stows.

Standard ISO tanks are the workhorse for bulk liquids that don’t require active refrigeration, delivering clean handling, predictable discharge, and audit‑ready documentation.

• Food and beverage ingredients
  • Edible oils, glucose/fructose syrups, liquid sweeteners, wine musts, juice concentrates. Food‑grade interiors (Ra ≤ 0.8 µm), compliant gaskets, and validated CIP keep changeovers tight. Insulation or gentle heating helps hold viscosity so discharge targets—often 20–30 m³/h depending on line size and head—are met.
• Chemicals and specialties
  • Glycols, surfactant blends, detergent bases, alcohols, and certain permitted solvents per SDS. Chemical‑grade elastomers and documented compatibility reduce leak and seal‑degradation risk; baffles stabilize partial fills on regional routes.
• Industrial/process fluids
  • Coolant concentrates, water‑treatment solutions, lubricant base stocks, and process oils. Stainless construction ensures corrosion resistance and clean discharge with fewer contamination touchpoints than drums/IBCs.
• Intermodal lanes with minimal repacking
  • One tank through road pickup, rail line‑haul, and sea legs reduces handling, damage risk, and paperwork complexity. With insulation/heating, winter corridors remain viable for viscosity‑sensitive cargoes.
• Campaign operations and repeatable cleaning
  • Rotating product families through standardized wash procedures (documented wash certs and prior‑cargo lists) keeps schedules on track and audits straightforward.
• Partial‑load and multi‑drop (with baffles)
  • When routes demand 60–90% fills, baffled standard ISO tanks maintain controllability and steady pump suction, trimming stop–start delays and foaming during discharge.

If your liquid’s stability window fits T11 parameters and the priority is safe, clean, and efficient movement in a universal 20‑ft footprint, standard ISO tanks provide a predictable baseline under the tankcon.com specification—easy to plan, simple to audit, and dependable across industries.

Standard ISO tank containers are engineered as universal, intermodal workhorses for bulk liquids. The platform is consistent; the value comes from precise metallurgy, safety margins you can audit, and interfaces that make loading and discharge predictable.

Construction and safety

• 316L stainless‑steel cylindrical vessel with dished ends; typical design pressure ~4 bar for T11 duty, hydrostatic test commonly 4–6 bar.
• ISO 1496–compliant 20‑ft frame (≈6,058 × 2,438 × 2,591 mm) with corner castings for lifting/stacking; CSC plated for international carriage.
• Pressure‑relief valve generally set ~4.0–4.4 bar, capacity sized for credible heat/input scenarios; documented PRV tests for inspections.

Hygiene and cleanability

• Food‑grade interiors target Ra ≤ 0.8 µm and are CIP‑ready; certified depots provide validated wash cycles with spray‑ball coverage mapping and wash certificates.
• Smooth weld profiles and proper drain angles support complete emptying and faster changeovers between product families.
• Gasket/elastomer sets selected per duty: food‑contact gaskets for edible products; EPDM/PTFE/FKM for chemical portfolios.

Interfaces and instrumentation

• DN500 manlid typical for safe access; 2–3" bottom outlet with primary/secondary closures; sample valve and thermowells for in‑process checks.
• Optional dual temperature probes, outlet thermowell placement, and insulated valve boxes to protect discharge conditions in cool climates.

Thermal and motion options within the standard platform

• Insulation: polyurethane foam 50–100 mm; when new, overall U‑value ~0.3–0.4 W/m²K to curb heat gain/loss on long lanes.
• Heating: steam coils or electric/hot‑water/glycol tracing to maintain ~+20–50°C for viscous cargoes; watt density and uniformity matter for even heat.
• Baffles: internal plates with radiused apertures to damp slosh, improving handling and pump NPSH at ~60–90% fills.

Operational performance

• Typical nominal capacity ~24,000–26,000 L balances payload with road limits.
• Predictable pump rates (often 20–30 m³/h, dependent on viscosity, line size, and head) streamline bay scheduling.
• Documentation backbone—prior cargo declarations, wash certs, periodic exam stamps (≈2.5‑year intermediate, ≈5‑year thorough)—keeps audits straightforward.

These features make the standard ISO tank a dependable baseline: compatible across modes, easy to plan around, and consistent in day‑to‑day operations under tankcon.com procedures.

Per your instruction, pricing information is not provided. If useful, I can help build a non‑pricing evaluation framework—payload versus tare, inspection cycle timing, insulation performance, expected energy for heated lanes, discharge time modeling—so you can compare options without quoting figures.

They are used to transport bulk liquids that don’t require active refrigeration and can be safely carried under T11‑type conditions, with optional insulation or heating where the product and route demand it.

• Food and beverage ingredients
  • Edible oils, glucose/fructose syrups, liquid sweeteners, wine musts, juice concentrates. Food‑grade finish (Ra ≤ 0.8 µm), compliant gaskets, and validated CIP enable clean changeovers; insulation or gentle heat helps keep viscosity in a pumpable window.
• Chemicals and specialties
  • Glycols, surfactant blends, detergent bases, alcohols, and certain permitted solvents per SDS. Elastomer selection (EPDM, PTFE, FKM) and PRV sizing align with chemistry and operating temperature.
• Industrial and process liquids
  • Coolant concentrates, water‑treatment solutions, lubricant base stocks, process oils—applications where corrosion resistance, clean discharge, and intermodal simplicity matter.
• Intermodal lanes with minimal repacking
  • One sealed tank across road pickup, rail line‑haul, and sea legs reduces handling steps and damage risk. With insulation/heating, winter corridors remain feasible for viscosity‑sensitive cargoes.
• Campaign operations with repeatable cleaning
  • Rotating product families through standardized wash procedures (documented wash certs and prior cargo lists) preserves schedule reliability and audit readiness.
• Partial‑load and multi‑drop (with baffles)
  • Where routes require 60–90% fills, baffled standard ISO tanks stabilize handling and pump suction, reducing stop–start discharge and foam incidents.

If your product’s stability window fits T11 parameters and the goal is safe, clean, and efficient intermodal movement in a universal 20‑ft footprint, standard ISO tanks are the practical baseline under the tankcon.com specification—predictable to operate, simple to audit, and proven across industries.