This is a big misunderstanding for everyone. We use the same oil no matter how high or low the commodity is! However, there are many kinds of fuels because the heat value of bolts made of different materials is different. In order to maintain abrasive tools, different fuels are used. Here, from the perspective of technical specialty, we will explain which fuel should be used for stainless steel rivets, aluminum bolts, copper bolts and iron bolts. We mentioned that the heat values of bolts of different materials are not the same. According to our years of observation and discussion, the calorific value of stainless steel rivets is very high, and the calorific value of copper bolts is slightly lower than that of stainless steel rivets, and therefore the calorific value of aluminum iron big cap rivets is slightly lower than that of stainless steel rivets For these two kinds of bolts, the drawing oil with higher concentration is suitable, while the calorific value of aluminum bolt is smaller. Therefore, the automobile oil with lower concentration is selected, while the iron bolt is close to the middle of these two kinds of bolts, and the calorific value is general. Therefore, both automobile oil and drawing oil can be used. In addition, the larger the size of the bolt, the greater the calorific value. Therefore, when the specification of single drum rivet and iron bolt is too large, draw oil should also be used as lubricating fluid! Many manufacturers use automobile oil as lubricating grease no matter how the material is, so the bolt properties are weak and the defective rate is high, and the price is relatively high. Therefore, it is more reliable to find a technical professional bolt manufacturer!