Heat treatment steel introduction
For heat treatment,the adoption of appropriate way for metal materials or workpiece heating, heat preservation and cooling.In order to obtain the anticipated organizational structure and performance. The processes of heat treatment are all made by heating,heat preservation and cooling  
Heat treatment application
 Heat treatment process can be classified as three categories of bulk heat treatment, surface heat treatment and thermo-chemical treatment. According to varying measures of heating media, temperature and cooling methods,there are a variety of technology for heating processing base on each category. And different heat treatment process of the same kind of metal will get different groups woven. So that they have different performence. Steel is the most widely used metal in industy. And steel microstructure are most complex. so heat treatment of steel have all kinds of
types in the world. Bulk heat treatment means heating the whole workpiece, and cooling with proper speed.  To get metallographic structure that we need. In order to Change the whole Mechanical properties. So this is the bulk heat treatment. It is made by four basic technology which base on
annealing,nomalizing,quenching and tempering
Heat treatment process
Heat treatment is most important process in making machinery parts and tools. It can Improve the organization and performance,and play to the material potential fully. thus It can mention the sevice life of the workpiece. In producting of machine tools heat treatment of steel may be used by accounting for sixty to seventy percent of all productions. And the digital can reach seventy to eighty percent in car industry. For both machine tools and car industry, heat treatment of steel play a important role.

Source:

• [Selling list] | ASTM A442gr.55 steel plate/sheet, A442gr.55 steel plate Normalizing
• [Selling list] | ASTMA441gr.60 steel plate/sheet, A441gr.60 steel plate Normalizing
• [Selling list] | DIN17102 St E 315 steel plate/sheet, St E 315 steel plate Normalizing
• [Selling list] | DIN17102St E 255 steel plate/sheet,St E 255 steel plate Normalizing
• [Selling list] | DIN17102 E St E 355 steel plate/sheet, E St E 355 steel plate Normalizing