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Heating Pad

Place the heating pad at the bottom of the flexitank and heat it to keep the chemicals inside the flexitank in a certain state.

The steam heating pad is a rubber tube installed at the bottom of the container flexitank, and the steel pipe is used to introduce and export steam, so that the steam flows at the bottom of the flexitank and plays a role in heating the liquid inside the flexitank through heat conduction. It has the characteristics of simple structure, high thermal efficiency and no harm to the liquid bag.

Heating Efficiency And Heating Temperature Of Electric Heating pad

specific parameters: (Take 380V and 220V electric heating pads as examples)

Item category 380V electric heating pad 220V electric heating pad
Exterior color Red and white plug socket Blue white plug socket
Material Aluminized film and heating wire Aluminized film and heating wire
Heat source Three-phase voltage: 380V Single-phase voltage: 220V
Power 4.5KW 4.5KW
Thermal protection temperature (max) 80℃ 80℃
Heat source Commercial power supply Private power
Heating rate at room temperature (20℃) 4min/80℃ 8min/80℃
Heating rate at room temperature (0℃) 10min/80℃ 30min/80℃

Precautions For Product Use

Before use, please confirm whether the protective layer of this product is damaged. If any damage is found, please repair it with transparent glue.


Please confirm whether the product is damaged before use. If damage is found, please stop using the product.


When laying this product flat in the container, please keep it flat and avoid folding and overlapping. (Folding and overlapping may cause local temperatures to be high).


When wiring the container flexitank electric heating pad, the wiring work of the three-phase five-hole power supply must be performed by professional electricians.


Since the insurance of this product only covers the risks during the first use, we do not recommend multiple uses. If used multiple times, you will be responsible for the risks that arise.


The storage warehouse of this product must be clean, ventilated and protected from light. Stacked in batches, there should be a certain distance from the wall and the ground. They must not be mixed with toxic or harmful substances. Pay attention to insect and rodent prevention. The storage validity period is 18 months.


Steam Heating Pad Heating Efficiency And Heating Temperature

specific parameters: Take the 32-tube steam heating pad as an example

Environment temperature -10℃-20℃
Steam pressure 0.5Mpa
Heating liquid Water Oil
Weight 24 Ton 24 Ton
Heating efficiency About 0.6℃/H About 1.2℃/H
Explanation 1. Due to the different night temperature differences, the heating rate during the day is significantly higher than that at night. Heat dissipation has a greater impact on heating efficiency.
2. According to the heat calculation formula: Q=c*m*AT provides the same heat, and the same temperature rise is inversely proportional to the specific heat and mass of the liquid. From this, we can indirectly estimate the heating rate of other liquids with different specific heats and masses based on the specific heat of water 4.2 and the mass of water 24 tons. For example, the specific heat of a certain grease is 2.3 and the density is 0.86. If heated under the same conditions, the temperature will rise. The efficiency is increased by approximately 2.12 times.
3. Due to different usage areas, usage conditions and heating materials, the heating potential and heating efficiency will be different. The above indicators are for reference.

Specific Experimental Parameters

Conditions Gas supply station pressure of 0.5Mpa Open-air heating
Explanation 1. It may be necessary to preheat the entire system at the beginning of the heating stage, the temperature rise is slow, and the steam valve is not fully opened on the first night. It was also found that the steam volume was significantly reduced, which was related to the gas station.
2. When the steam valve is fully opened during the day the next day, the efficiency is significantly improved by 0.5℃/H. The next night it was at 0.42℃/H. Temperature rises faster during the day than at night.
3. The average day and night temperature rise is 0.46℃/H.
4. According to the heat calculation formula: heat = specific heat * mass * temperature difference, the specific heat of water = 4.2, density = 1. For example, the specific heat of heating oil is 2.3, and the density is 0.83. The estimated heating time is about 1℃/H ( day and night average).

Flexitank is a soft packaging container made of polyethylene (PE) and polypropylene (PP) that can store and transport various non-hazardous fluids. Each set of flexitanks can be placed exactly in a 20-foot container, with a volume of 15m³-26m³. In the transportation of non-hazardous liquid materials, it can replace expensive traditional packaging such as oil tankers and iron drums. It takes about 20 minutes to install a set of flexitanks. After the installation is completed, you only need to connect the valve and the feed port to load materials. After the loading is completed, the fully loaded container can be transported on roads, railways, and freighters for medium and long distances.


Low purchase cost, high load capacity, light weight and small size of the product.

Effectively reduce costs (including packaging, barreling, storage, processing and material management costs), only need to pay one-way freight, reduce transportation costs, no cleaning costs, eliminate the risk of cross-contamination of goods.

Easy operation, reliable quality, environmentally friendly products, simplified loading and unloading procedures, reducing loading and unloading workload, and effectively improving work efficiency.

Product Advantages

Abundant supporting resources: Containers are widely distributed in railways, ports, and highway freight yards. The quantities are huge and can be called at any time. However, the number of tank containers or tank trucks is relatively small and requires deployment, leaving little room for choice.


Hygienic and pollution-free: The flexitank is a disposable product and is made of imported food-grade raw materials. It does not cause secondary pollution to the liquid contained and can effectively maintain product quality.


Convenient transportation: The use of flexitank containers for transportation facilitates the implementation of rapid intermodal transportation by road, rail, and sea, and a door-to-door one-stop transportation mode, which greatly improves transportation efficiency.


Cost savings: Disposable products save cleaning, maintenance and other costs, and greatly save manpower and financial resources during the loading and unloading process.


Compare With Similar Products

Oil drum (steel/plastic)

High procurement costs

high labor costs

Time-consuming loading and unloading

Low space utilization

And difficult post-processing


Low versatility

High procurement costs

Cumbersome cargo transfer process

Need for auxiliary equipment such as forklifts

Time-consuming loading and unloading

Standard Tank container

Not very versatile

Expensive to rent

Expensive to clean

Long to deploy

And cumbersome to transfer goods

Chemical carriers

Not very versatile

Long deployment cycle

Requires huge transportation volume

Only port to port

And difficult post-processing

Number of units

Unit capacity

Total capacity

Loading time

Unloading time

Manpower occupation

Space usage

Packing cost

Container Flexitank









Oil drum


















Choose Container Standards

Container Manufactured in strict accordance with international standards, including design, size, load-bearing, testing, identification, marking and operation requirements, etc. should all comply with international standards.
Scope of application Suitable for road and sea transport.
Container age 20-foot standard container not older than 3 years.
Appearance Exterior panels without any repairs.
Vertical groove There is a vertical groove next to the door bolt on each side of the container.
Bar lock The left and right doors of the container each have intact locks.
Label There is no mark or label with the word "danger" on the box, and it does not contain any radioactive or toxic substances that are dangerous to the human body.
Inside the container The container must be clean and dry, free of odor, and free of any debris, sharp edges, spikes, loose screws, pits, floor cracks, loose and raised floor nails, welding spots in the container or the inner surface of the container that may cause damage to the flexitank. Any obvious traces of welding repairs, etc.
Floor There should be no cross-contamination or other sources of contamination in the container or on the floor that may react with the flexitank material and leak into the liquid cargo.
Tips There is a flexitank operation instruction manual in the accessory package, which contains three parts: "Flexitank Installation Checklist", "Service Tracking Sheet" and "Flexitank Installation Process". The installation personnel are required to strictly follow the relevant contents of the instruction manual.

LET has been focusing on the research and development, design and customized production of high-end food-grade liquid bag special films. Relying on the technical support of major polyethylene raw material suppliers in the world, LET has established long-term technical and strategic cooperation relationships with them, and has many technical experts in the liquid bag and blown film industries, with an annual production capacity of 6,000 Ton. The high-end liquid bag special films produced by it are at the leading level in the industry in terms of various physical indicators (tensile strength, elongation at break, dart impact strength, thickness uniformity, rub resistance, etc.).

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