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What Is A Container? Concept And Classification Of A Container

What Is A Container? Concept And Classification Of A Container
What Is A Container? What is the structure of the container? What types of containers are commonly used today? Delta Logistics will help you answer Containers are used quite commonly...

What Is A Container? What is the structure of the container? What types of containers are commonly used today? Delta Logistics will help you answer

Containers are used quite commonly today to make containers for goods and it is an indispensable product in the transport and industrial sectors. Containers make the transportation and storage of goods safe and convenient, contributing to the promotion of global industrial trade. So, What are containers? What types of containers are currently on the market? Let’s find out with Delta Logistics in the following article.

What Is A Container

1. Concept and Structure of a container

1.1. Concept of container

A container is a large steel container in the shape of a rectangular box with a hollow inside and a latch design to close it. Containers have an extremely good bearing capacity and come in many different sizes. The shell of the container is usually blue or red, but can also appear in other colors depending on the customer or manufacturer’s request.

1.2. Structure of a container

Although there are kinds of different container, it has a common structure including the following part:

  • Frame of container: The feature of this frame is that it has a rectangular box shape and is made of steel. The container frame is the most important part that determines the bearing capacity of the container. The frame is composed of 4 corner posts, 2 bottom side rails, 2 top side rails, 2 bottom cross members, 1front top end rail and 1 door header.
  • Bottom and floor of the container: The bottom and floor of the container are bottom cross members connecting with 2 bottom side rails and the Frame of the container, which create a block with solid bearing capacity. The floor of the container is made mainly of original wood, so the bearing capacity is very good and sturdy. Moreover, the type of wood used to make the container floor has been soaked in chemicals, so it can resist termites and rot.
  • Roof panel: Roof panel of container is a sheet of metal made of steel, aluminum with undulating waves that are very sturdy and do not rust to help preserve and ensure the safety of goods during transportation.
  • Side wall: The side walls of containers are metal sheets that are bonded together and corrugated surfaces prevent rainwater from stagnation and increase the bearing capacity of the container. These vertical bulkheads are used to shield the sides of the container.

  • Front end wall of container: Front end wall of container is metal steel plates without doors and corrugated in square blocks.

  • Rear end wall and door: It is designed with 2 flat metal panels as the door, the doors are attached to the container frame by strong hinges. 
  • Corner fittings: is made of steel and welded to the top and bottom corners of the container. They are used to tie ropes during lifting, loading and unloading of goods.
  1. Current container classification

Containers being used today are quite diverse, but we can classify containers into the following common types: 

  • General purpose container: This type of container is also known as a dry container and is used to transport dry goods including 20, 40 containers and 40’HC. These types of containers are mainly used in sea freight transport. Among them: 
  • Container 20 is suitable for storing goods such as furniture, cartons, bales…
  • Container 40 is known to be the most common type used for packing and transporting goods suitable for furniture, cartons…
  • A refrigerated container:  Refrigerated containers are designed with heat-retaining devices by direct refrigeration systems or by clamping machines mounted in front of the container. This type of container is used to store goods, food, agricultural products, medicines, or other temperature-sensitive goods that need to be carefully preserved during transportation. 
  • Open-top container: This type of container is designed without a roof, so it is also known as an open-roof container and to cover the goods, people will use a canvas to cover it. Open-top container suit. Open-top containers are suitable for goods that are construction equipment, machinery, and timber with long or bulky dimensions that cannot be stowed in the container. Therefore, the open-top design will make it convenient to get goods through the roof of the container.
  • Named cargo containers: The named cargo containers are specially designed to cut off the 2 steel walls of the container with tarpaulin, so it can be opened and closed, making it convenient for loading and unloading. Named cargo containers are mainly used to transport goods such as cars, motorbikes, drinking water, etc.
  • Tank containers: Tank containers are made from aluminum, steel or stainless steel designed according to ISO standards with high durability and extremely strong. This type of container is used to carry liquids such as gasoline, oil, water, mercury.
  • Flat rack container: It has a roofless and wallless design with only one very hard and sturdy floor, adding two front and rear wall panels that can be fixed, folded, or disassembled for convenient loading and unloading. The flat container is suitable for transporting heavy, difficult to carry, and bulky goods such as iron and steel, and large machinery.
  1. Standard container size table

Based on classifying containers, We will have the following standard container size table:

Container Classification Longs








Container 20 feet 5.898 2.352 2.395 33.2 
Reefer containers 20 feet 5.485 2.286 2.265 28.4 
Container 40 feet  12.032 2.350 2.392 67.6 
High cube 40 feet 12.023 2.352 2.698 76.3 
Reefer containers 40 feet 11.572 2.296 2.521 67.0
Named cargo container 45 feet 13.716 2.500 2.896 99.3 


  1. The function of container in shipping and life 

Containers are a particularly important product in the field of freight transport and in life. The introduction of containers brings many practical benefits and contributes to the strong development of trade, import and export of goods. 

4.1. The function of containers in shipping

  • Reduce costs related to loading and unloading, storage and transportation of goods
  • Minimizing damage from theft because the goods contained in the container are carefully and safely preserved.
  • Significant cost savings for cargo insurance in transit
  • Improve labor efficiency to help load and unload more goods
  • When using a container, the ship can pack more goods
  • Making the distribution of domestic goods by trucks and ships easier and more convenient.
  • Contribute to the promotion of global trade.

4.2. The function of containers in life

Containers not only play an important role in the field of transport, and industrial commerce, but are also extremely useful in daily life.

The container is taken advantage of services for the different aims

  • Used as a long-term warehouse
  • Reuse to create architectural works, cafes, …
  • Make your office or home unique and stylish
  • Developing container rental services

Hopefully, through this article, you have been able to understand the concept of containers, their structure, classification as well as the role of containers.

Customers who want to use international transportation services, please contact Delta Logistics to be provided with professional, prestigious and top quality services. Delta would like to commit to quality, competitive price. Come to Delta Logistics for the best service experience.







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