List of Production Processes: “Making Stainless Steel Containers”

At Nitto Kinzoku Kogyo, stainless steel containers are made by welding
plates together, not by press molding.
Here, we will introduce how stainless steel containers are made.

Nitto Kinzoku Kogyo is a manufacturer that handles everything from design to production of stainless
steel containers in-house. After welding, we use our original technology for processing to enhance the
value of our products.

Accepting the Materials

This process involves accepting the purchased materials.
We check that the ordered materials have arrived without error and have no scratches.

Cutting the Materials

This process involves cutting the materials to a predetermined size using a
technique called “shearing”.
There are also cases where materials of a predetermined size have been cut and purchased.

Round the material

This is the process of rounding the material boards that will become
the body of the container, called “roll”. If this process is not done well, it will affect
the subsequent process.

Make it a cylinder

This is the process of welding the rolled board to make the cylindrical
body of the container. It is produced by adjusting the material, thickness, and temperature
of the board.

Curl one end of the cylinder

This is the process of curling one end of the cylindrical body of the
container, called “curl”. The edge-wrapping part of the container is made here.

Attach the bottom

This is the process of welding the body and bottom of the container to
make the container. Care is taken to ensure that there are no gaps or holes when welding.

Polishing

This process involves polishing the surface of the container to make it
smooth and give it a glossy finish.
The surface of the stainless steel container is polished using a “buff” coated with
polishing material such as cloth.

Cleaning

This process involves cleaning to remove general dirt.
The finished product is checked for defects while being washed.

Assembly and Inspection

This process involves assembling the product and checking its
quality.
Inspections are performed based on customer requests.

Packaging, Wrapping, and Shipping to You

This is the final step in delivering the finished product to you.
We carefully package and wrap each product according to its specifications and destination.