Molybdenum is not found in nature It is found in the form of molybdenite mineral in quartz rock veins.
These days, a variety of water pipes and fittings are widely used in buildings and urban facilities, which vary depending on the type of application a [...]
sponge iron is a metal product Which is produced by direct reduction of iron ore in the solid state.
What is iron ? What are its uses? Iron is a chemical element Which is in the periodic table with the symbol Fe and atomic number 26. Iron is a [...]
Beam and block roofs have good fire resistance And their insulation is also significant to keep the building safe from the cold or hot air . Unlike qu [...]
What is retrofitting? It is called a set of actions that After doing them, the structure has properties that it does not have before doin [...]
The stones are very hard materials . It has been one of the most widely used materials since ancient times.
The precast walls are bulding materials that make construction easy.
iron is main ingredient of earth.
What is the calibrasion? Called compare measurement tools with global standres calibration taht According to this comparison errors are appear. [...]