Scrap metal refers to metal fragments and debris discarded by industries and metal processing, as well as metalware discarded after equipment upgrades. It also includes metal packaging materials, scrap cars, and other metal items collected from municipal waste. Scrap metal is a resource, and specialized companies worldwide specialize in scrap recycling. Scrap metal is primarily used for smelting and reuse, with some used in the production of industrial equipment and parts, tools, and consumer electronics. The main sources of scrap metal are as follows:

1. Internal Scrap Metal
This is scrap metal generated within manufacturing companies and reused as raw material for their own production. Typically, this scrap metal does not enter the market.

2. Processed Scrap Metal
This is scrap metal generated by domestic metal manufacturing companies and returned to metal recycling plants for reuse as raw material. Typically, this scrap metal returns to recycling plants within a few weeks of its generation, hence the name "short-term scrap metal."

3. Depreciated Scrap Metal
This is scrap metal generated when metal products reach the end of their useful life and are scrapped. Since the formation of depreciated scrap metal requires several life cycle stages such as metal production, manufacturing of metal products, use, scrapping and recycling, which generally takes several years or even more than ten years, depreciated scrap metal is also called "long-term scrap metal".

Wide Range of Applications for Finned Tubes

As a highly efficient heat transfer element, finned tubes play a vital role in a variety of industrial sectors due to their excellent heat dissipation performance and structural features. Their primary applications include: 

Industrial Cooling Systems

Finned tubes are widely used in industrial cooling systems such as refrigeration units, air conditioning equipment, and fan cooling systems. Their efficient heat dissipation allows them to quickly transfer heat to the surrounding environment, ensuring stable operation of the equipment. They are ideal for temperature control in industries such as the chemical and machinery manufacturing industries.

Petrochemical Industry

In the petrochemical industry, finned tubes are an ideal choice for key equipment such as reactors, heat exchangers, and steam generators. Their corrosion resistance and customizable material options (such as stainless steel, carbon steel, and copper-aluminum composites) enable them to meet heat transfer requirements under diverse process conditions, improving production efficiency.

Power Industry

Finned tubes are commonly used as heat dissipation or heating elements in power plant boilers, gas turbines, and hydropower equipment. Their excellent thermal conductivity effectively regulates the temperature of the medium, ensuring stable operation of power generation equipment while improving energy efficiency.

Refrigeration Equipment

Fin tubes are widely used in core components such as condensers and evaporators in the refrigeration industry. By optimizing heat dissipation efficiency, they not only improve cooling performance but also reduce energy consumption. They are suitable for applications such as commercial refrigerators and industrial refrigeration systems.

Heating Systems

In systems such as hot water circulation and steam heating, fin tubes can significantly increase heat exchange rates, ensuring rapid and uniform heating. They are suitable for applications such as HVAC and district heating.

Electronic Equipment Cooling

As the power density of electronic devices continues to increase, fin tubes, with their compact structure and efficient heat dissipation, are widely used in cooling modules for devices such as servers, 5G base stations, and high-power LEDs, ensuring long-term and stable operation.

Summary

From industrial cooling to electronics cooling, from petrochemicals to power generation, fin tubes, with their flexible design and excellent performance, have become an indispensable component in modern heat exchange systems. With advances in material technology and manufacturing processes, their application will continue to expand.

NM500 steel plate is a high-strength, wear-resistant steel plate with excellent wear resistance and mechanical properties.
The chemical composition of NM500 steel plate primarily includes C, Si, Mn, P, S, Cr, Ni, and Mo, with specific content ranges as follows:
Element content ranges: C ≤ 0.38; Si ≤ 0.70; Mn ≤ 1.70; P ≤ 0.020; S ≤ 0.010; Cr ≤ 1.20; Mo ≤ 0.65; Ni ≤ 1.00. This optimal ratio of these elements ensures the NM500 steel plate's excellent wear resistance and mechanical properties.

NM500 Performance Characteristics:
High Strength and Wear Resistance: NM500 steel plate boasts a Brinell hardness of up to 500 HBW, capable of withstanding high pressure and friction without being easily abraded.
Excellent Mechanical Properties: Excellent tensile, flexural, and impact properties meet various machining and manufacturing requirements. Corrosion Resistance: Specially treated NM500 steel plate offers excellent corrosion resistance, resisting attack by acids, alkalis, salts, and other chemicals.
Easy Processing: It can be cut, welded, and bent, facilitating the manufacture of various mechanical parts and structural components. It is also easily welded to other materials.
High Cost-Effectiveness: Compared to other high-strength, wear-resistant materials, NM500 steel plate is more affordable, reducing production costs.

NM500 steel plate is a high-strength, wear-resistant steel plate made from high-carbon alloy steel. The chemical composition of NM500 steel plate primarily includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), and molybdenum (Mo). The optimal balance of these elements ensures NM500 steel plate's excellent wear resistance and mechanical properties. The carbon content directly affects the plate's hardness and strength, while elements like silicon and manganese contribute to its toughness and impact resistance.

Performance Characteristics of NM500 Steel Plate
1. High Strength: With a yield strength exceeding 500 MPa, NM500 steel plate offers high load-bearing capacity and impact resistance, meeting the structural requirements of various heavy machinery and buildings.
2. High Wear Resistance: The surface of NM500 steel plate undergoes special heat treatment and alloying, resulting in high hardness and wear resistance, effectively resisting various types of wear and corrosion.
3. High fatigue resistance: The material of NM500 steel plate has undergone fine tissue processing and heat treatment, and has high fatigue resistance, and can maintain high stability and durability under repeated loads.