Brushing is essentially a repair process. For example, if a metal surface has scratches, a brushing machine can be used to create uniform scratches, thus concealing the original scratches. Therefore, brushing serves both to remove scratches and to enhance the appearance of metal sheets.

Straight-line brushing: The surface displays straight lines, divided into continuous and discontinuous brushing. Continuous brushing is achieved by rubbing in a single direction with a scouring pad or stainless steel brush; discontinuous brushing is processed using a differential roller set (high-speed grinding roller + slow rubber roller).
Random-line brushing (also known as "he-wen"): Irregular, matte finish, formed by irregular oscillating friction of a high-speed copper wire brush, this kind of processing has higher requirements on the surface of aluminum or aluminum alloy plates.
Wave brushing: Creates a wavy texture, typically achieved on a brushing or texturing machine through the axial movement. A wavy pattern is created by grinding rollers using the axial movement of the upper set of rollers to brush the surface of an aluminum or aluminum alloy plate.
Swirl pattern (or "swirl polish"): This technique uses cylindrical felt or nylon wheels with polishing paste for rotary polishing and is often used for decorating small items such as round signs and dials.

Aluminum alloys are alloy materials formed by adding certain amounts of other alloying elements (such as copper, manganese, silicon, magnesium, and zinc) to aluminum as the base material. Due to the addition of these alloying elements, aluminum alloys retain aluminum's basic properties such as light weight and good electrical and thermal conductivity, while also possessing higher strength, better casting and processing performance, and excellent corrosion resistance.

Aluminum alloys have a lower density than traditional materials such as ordinary steel and copper. Therefore, for the same volume or strength, aluminum alloys are lighter, which helps to reduce product weight and provides a better handling and motion experience.

Compared to other traditional materials, aluminum alloys have higher strength and rigidity. This means they can better withstand external impacts and pressure during use, resulting in better durability.

Aluminum alloys have excellent electrical and thermal conductivity, making them widely used in the manufacture of electronic devices and some high-temperature components.

Aluminum alloys can be manufactured using various forming techniques, including casting and extrusion, and are easy to process. Therefore, they are convenient for industrial production.

1. Aluminum alloys have a lower density and higher strength compared to traditional metals such as steel and copper, making them an ideal choice in many fields. They offer high strength, good rigidity, and durability.
2. Aluminum alloys have excellent thermal conductivity, enabling rapid heat transfer, thus offering advantages in applications requiring heat dissipation, such as radiators.
3. Aluminum alloys have high electrical conductivity, making them widely used in electrical wires and electronic devices.
4. Aluminum alloys have strong corrosion resistance, exhibiting good durability in atmospheric and seawater environments.

Yes, Q235 galvanized steel pipes are highly suitable for greenhouse structures. They are not only widely used in domestic agricultural projects but also a proven, cost-effective, and reliable material for greenhouse frameworks.

This is primarily due to the mechanical properties of its base material, Q235 steel. This material boasts a yield strength of no less than 235 MPa, excellent weldability, and good plasticity during processing. These properties ensure the greenhouse framework maintains sufficient structural stability when subjected to wind, rain, snow loads, and the weight of suspended crops. For instance, an official greenhouse project in Lushunkou District, Dalian, explicitly specified the use of Q235 steel and galvanized steel pipes for the greenhouse framework, clearly demonstrating its suitability for agricultural facilities.

Beyond strength, the most critical test for greenhouse materials lies in corrosion resistance. The “galvanized” in Q235 galvanized steel pipes specifically refers to the hot-dip galvanizing process, where steel pipes are immersed in molten zinc at high temperatures to form a dense zinc-iron alloy layer on their surface. This protective coating endows the material with exceptional corrosion resistance, effectively delaying rust formation even within the harsh greenhouse environment characterized by high humidity and frequent pesticide spraying. According to the construction reference drawings issued by the Hubei Provincial Department of Agriculture and Rural Affairs, the average thickness of the galvanized coating on greenhouse steel pipes must not be less than 45 microns. This standard ensures a corrosion-resistant lifespan far exceeding that of ordinary untreated steel.