Before the spread of the Internet, everyone dealt with letters and stamps. One of the pastimes of that time was to separate the stamp from the envelope and keep it. I also had a stamp album when I was a teenager. Therefore, it is not strange that when I started my career as a welding engineer, I looked for the connection between postage stamps and welding.
The file below is the result of that effort.
PS: Unfortunately, I have not written down the references that I used.
These resources present topics on the materials selection which will give a better understanding on the selection methods and then …
Standards organizations can be classified by their role, position, and the extent of their influence on the local, national, regional, and global standardization arena. By geographic designation, there are international, regional, and national standards bodies. By technology or industry designation, …
In the drawing of an equipment, 304/304L was considered as material. During construction, the inspector noticed that only 304 was used. When he asked why, he heard: “I didn’t do anything wrong. As you see in the drawing, ۳۰۴/۳۰۴L is …
