You should never think that the refrigerated trucks you see every day are the same, that is, the refrigerated compartments are installed on the chassis of different brands of trucks. In fact, according to the different temperature requirements of the transported goods, the functions of the refrigeration unit are different, and the country also clearly defines the corresponding category distinction.
Classification of refrigerated trucks: According to "Safety requirements and test methods for road transport, food and biological products refrigerated trucks" (standard number: GB 29753-2013), the classification of refrigerated trucks has eight levels from A to H.
This standard was implemented in 2013. It was not mandatory to spray the markings on the carriages. Afterwards, with the strict implementation of the regulations, it has become a mandatory project. All refrigerated trucks must spray refrigerated trucks in obvious positions.
According to GB requirements, the eight levels of refrigerated trucks belong to two major categories:
Vehicles that transport articles are perishable foods (divided into AF) vehicles that transport biological products (in categories G and H). When the ambient temperature is 303K (30 °C), the temperature range maintained by the average temperature of the refrigerated truck will be Refrigerated vehicles for perishable foods are classified into AF, Category 6, and are classified as follows:
AF class
When the ambient temperature is 303K (30 °C), the refrigerated trucks transporting biological products are classified into GH, Class 2 according to the temperature range maintained by the average temperature of the refrigerated truck compartment.
GH class
This is the classification standard for refrigerated trucks. You can use the above criteria to compare the grades of your refrigerated trucks. Currently, most refrigerated trucks on the market are made in accordance with B and F refrigerated trucks. Only some fresh refrigerated trucks are Made according to Class C standards. According to such standards, users can also choose a suitable refrigerated truck according to the needs of their daily transportation of goods. If you still don't understand, you can contact our sales department.
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Tungsten carbide mixed Metal Alloy Powder is commonly used in PTA (Plasma Transferred Arc) welding. PTA welding is a process that involves the deposition of a hardfacing material onto a base metal to provide wear resistance, corrosion resistance, and improved mechanical properties.
Tungsten carbide is a very hard and wear-resistant material, making it ideal for applications where high abrasion resistance is required. It is often mixed with other metals, such as nickel, cobalt, or chromium, to form a metal alloy powder. These metal alloys enhance the properties of the tungsten carbide and improve its compatibility with the base metal.
The tungsten carbide mix metal alloy powder is typically fed into the PTA welding torch, where it is melted and propelled onto the surface of the base metal using a high-energy plasma arc. The molten powder forms a hard, dense coating that bonds with the base metal, providing excellent wear resistance and protection.
The specific composition of the tungsten carbide mix metal alloy powder can vary depending on the application requirements. Different ratios of tungsten carbide and other metals can be used to achieve desired properties, such as hardness, toughness, and corrosion resistance.
Overall, tungsten carbide mix metal alloy powder is a versatile and effective material for PTA welding, offering superior wear resistance and protection for various industrial applications.
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