In front of us, we learned about the domestic automobile model rules. We know that the formulation of the automobile model rule is composed of the first part, the middle part and the tail part. The rules for the first part and the middle part are generally relatively fixed, mainly consisting of the company name code, vehicle category code, and main parameters. Code, product serial number and other parts. The formulation of the tail section is difficult to unify because each company has a lot of autonomy, but there are still general rules. First of all, let's take a look at the composition of the model of a special car. This time, we mainly look at the tail part. We use “* * (*)*†to indicate its composition (* represents all letters). As we all know, the distinction between special vehicles depends largely on the structure of the tops, while the first one indicates the structural characteristics of the vehicles, such as vans, tank cars, etc. The specific correspondence is shown in the following table. The structural features of each vehicle model include numerous vehicles with different uses. Therefore, the second position is used to indicate the characteristics of the use. We have collated the corresponding relationships of the van vehicles, so that everyone can find out what the rules are. ? It can be seen that most vehicle use feature codes are formed by combining the initials of the vehicle's Pinyin initials. There are no other complicated rules. For repeated letters, only the next letter is used to distinguish them. In this way, for the "...XGC" model, we can clearly understand that it represents a van truck. The third digit is used to indicate the configuration distinguishing code. When there are different configuration requirements for the same type of vehicle, it can be identified by this letter. For example, this bit is "J", which means a guarded ambulance to distinguish it from a normal ambulance. General models, if there is no configuration on the distinction, this one can be omitted. Bit 4 is used to represent the company's custom code, and each company has its own internal set of rules. Combining with the domestic automobile model rules we mentioned earlier, for the part of special vehicles, I think everyone should know about it, or take “BJ5031XJH...†as an example. We can recognize that it is a A 2nd-generation van-type ambulance produced by a Beijing automaker, with a quality of about 3 tons. Regarding the tail part of the special vehicle model code, we learned about it here. To fully understand it, please refer to http://news.chinacar.com.cn/newsview113644.html
Forged nipple
Pipe Nipple is used to connect two pieces of pipeline. There are reducing nipple and threaded short nipple. Some people call reducing nipple as Swage Nipple. Similar to pipe reducer, the type of swage nipple is concentric swage nipple and eccentric swage nipple. Manufacture of reducing nipple is MSS SP-95.
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Threaded nipple. One end is threaded, the other end is plain.
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Look at the model can understand the models take you to know the rules of domestic car models (2)