Description:We specialize in a wide range of steel products, including colored steel coils, colored steel plates, Baosteel colored steel coils, galvanized steel coils, electro-galvanized steel coils, aluminum-zinc coated steel coils, colored aluminum coils, aluminum mirror coils, cold-rolled steel coils, and hot-rolled steel coils, from major domestic steel mills. We maintain stable cooperative relationships with large steel manufacturers such as Baosteel, Ma Steel, Wu Steel, BHP Australia, POSCO Korea, and Yeh Wei Taiwan.
Film hardness is one of the important properties indicating the mechanical strength of the paint film, serving as a crucial indicator for evaluating the quality of coatings. Due to varying application purposes, different coatings require different levels of hardness.
The pencil hardness of the paint film is defined as the hardness of a pencil that can be pushed on the paint film without scratching the coating, and which corresponds to a known hardness standard.
The coating thickness measurement of Baosteel color steel coils aims to rationally select and effectively utilize different types of coatings with varying thicknesses to achieve optimal application effects in terms of associated mechanical, physical properties, and weather resistance.
Corrugated steel sheet roof screws and fasteners are leaking. This issue is quite common.
During construction, excessive or insufficient force applied to self-tapping screws, or misaligned or diagonal drilling, may cause deformation or detachment of the rubber gasket at the self-tapping screw, leading to dents and subsequent minor leaks on the roof, which accumulate to form pinpoint leaks.
Gutter leakage at the joints of color steel coil. The joints between two panels are not tightly connected or the overlap length is insufficient, as well as the lack of fully tightened self-tapping screws, creating gaps that lead to leakage at the horizontal joints. The wave of the color steel coil is too low or does not overlap by at least 360 degrees. When heavy rainfall submerges the wave, it is prone to large-scale leakage and difficult to detect the leakage point.
Gutter corrosion and leakage. Due to the generally thin steel plate thickness of gutter steel components, welding seams often encounter issues, and the water surface inside the gutter is usually not properly treated for corrosion prevention or the corrosion prevention measures are not standardized. After a period of use, severe corrosion occurs, leading to leakage.
The metal material of the color coated steel plate has a high thermal conductivity. When there is a significant change in external temperature, due to the large temperature difference in the environment, the color steel coil may contract and deform, resulting in considerable displacement at the joints. Consequently, there is a risk of water leakage at the metal plate joints.
Design of color steel coil roof drainage slope. The roof drainage slope should not be designed too gently, generally using a slope of 1/8 to 1/20. Due to heavy rainfall during the rainy season, a higher value for the roof drainage slope can be adopted.
The coated layer and coating types of color coated steel sheets are diverse. They should be selected based on the application environment and requirements, weighing various factors such as technology and competition. The choice should be made by correctly analyzing the performance data of color coated steel sheets provided by manufacturers, producers of color coated steel sheet products, and research institutions from various countries or regions, taking into account the business positions, responsibilities, interests, and scientific aspects of each entity. Color coated steel sheets with galvanized steel as the base plate, in addition to zinc protection, the coating on the zinc layer acts as a covering isolation, preventing rust on the steel plate and extending its service life. It is reported that the service life of coated steel sheets is 50% longer than that of galvanized steel sheets. The grade of color coated steel sheets consists of three parts: the color coated code, the base plate characteristic code, and the base plate type code, connected by a plus sign “+”.
1. Method for calculating the number of feet per ton for color coated steel sheets: 1000 ÷ 7.85 ÷ base sheet thickness ÷ width (1000 ÷ specific gravity)
2. Calculation method for the square meters per ton of color coated steel sheet: 1000 ÷ 7.85 ÷ base sheet thickness
3. Color coated steel sheet density calculation method: 7.85 - base sheet thickness (1000 ÷ the number of meters per ton)
Color coated steel sheet trends: 1. Higher quality base materials are being adopted, with increasingly stringent requirements for the surface, shape, and dimensional accuracy of the base material.
Color-coated steel sheet trends: 2. Improving pretreatment processes and solutions, with fewer equipment and lower costs becoming the mainstream process. Continuously enhancing the stability, corrosion resistance, and environmental performance of pretreatment solutions.
Color coated steel plate trends: Develop new coatings to enhance color reproducibility, UV resistance, and corrosion resistance; develop functional coatings with anti-pollution and heat-absorbing properties.
Color Coated Sheet Trend: 4: Group equipment more完善.
Color coated steel sheet trends: The cold rolled embossed sheet is more cost-effective, aesthetically pleasing, has a strong three-dimensional feel, and is highly durable, making cold rolled embossing technology a trend.
Color coated steel sheet trends: Emphasis on diversification, functionality, and sophistication, such as deep drawing color coated steel sheets, "grapefruit peel" color coated steel sheets, antistatic color coated steel sheets, anti-pollution color coated steel sheets, and high heat absorption color coated steel sheets, etc.
Color coated aluminum coils are produced by coloring the surface of aluminum sheets, including polyester coated aluminum coils and fluorocarbon coated aluminum coils, and are one of the lightweight metal materials. Aluminum-zinc coated color coated steel sheets undergo a chemical conversion treatment on the surface of the aluminum-zinc steel sheets in a continuous process. Then, a primer (5-7um) is applied, followed by a topcoat (about 20um) according to customer requirements. Due to the lightweight zinc layer of the aluminum-zinc coated steel sheets, the uncoiled area per ton of steel is greater than that of galvanized steel sheets with the same zinc layer thickness. The aluminum-zinc color steel coils have the corrosion resistance of 55% AL-Zn steel sheets, excellent weather resistance, and processing properties, with a beautiful surface finish, making them widely used for building facades and roofs.
Our company has a modern aluminum-zinc coated steel coil processing factory, capable of providing goods as per customer requirements.
Steel color coated plate processing (custom made), steel coil leveling, slitting, semi-finished product processing, punching, and film lamination services. When selecting color steel coils, we often hear a word, thickness, which is also a key factor in purchasing color steel coils.
A crucial issue to note is that the required thickness of colored steel coils varies depending on the location. Therefore, it's essential to understand the thickness of colored steel coils before making a purchase.
