Z29 BMP Rolled Steel Coil Construction Roofing Construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
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Structure of Z29 BMP Rolled Steel Coil Construction Roofing Construction
Description of Z29 BMP Rolled Steel Coil Construction Roofing Construction
PPGI is made by cold rolled steel sheet and galvanized steel sheets as baseplate, through the surface pretreatment (degreasing, cleaning, chemical conversion processing), coated by the method of continuous coatings (roller coating method),
and after roasting and cooling. Zinc coating: Z60, Z80, Z100, Z120, Z180, Z275, G30, G60, G90
Alu-zinc coating: AZ60, AZ80, AZ100, AZ120, AZ180, G30, G60, G90
Main Feature of Z29 BMP Rolled Steel Coil Construction Roofing Construction
1) Excellent corrosion resistance: The zinc layer provides a good protection of Pre-painted Galvanizeed Steel Sheet.
2) High heat resistance: The reflective surface of the material aids in efficiently reflecting the sunlight away and in turn reducing the amount of heat transmitted. The thermal reflectivity converts into energy savings.
3) Aesthetics: Pre-Painted Galvanized steel sheet is available in plethora of patterns and multiple sizes as per the requirements that given by our customers.
4) Versatility: can be used in the various areas.Standard seaworthy export packing: 3 layers of packing, inside is kraft paper, water plastic film is in the middle and outside GI steel sheet to be covered by steel strips with lock, with inner coil sleeve.
Applications of Z29 BMP Rolled Steel Coil Construction Roofing Construction
1. Construction and building: roofing; ventilating duct; handrail; partition panel;etc.
2. Electric appliance: refrigerator; washing machine; refrigerator; DVD;etc.
3.Transportation: oil tank; road sign; etc.
4.Agriculture:barn; etc.
5.Others:vending machine; game machine; etc. 
Specifications of Z29 BMP Rolled Steel Coil Construction Roofing Construction
| Classified symbol | Yield Point Minimum N/mm2 | Tensile Strength Minimum | Elongation Minimum % | Application | ||||
| N/mm2 | Nominal Thickness mm (t) | |||||||
| JIS | Yogic | 0.25-0.4 | 0.4-0.6 | 0.6-1.0 | 1.0-1.6 | |||
| G3312 | specification | |||||||
| CGCC | CGCC | -205 | -270 | -20 | -21 | -24 | -24 | Commercial |
| CGCD | CGCD | --- | 270 | --- | 27 | 31 | 32 | Drawing |
| --- | CG340 | 245 | 340 | 20 | 20 | 20 | 20 | Structural |
| CGC400 | CG400 | 295 | 400 | 16 | 17 | 18 | 18 | Structural |
| CGC440 | CG440 | 335 | 440 | 14 | 15 | 16 | 18 | Structural |
| CGC490 | CG490 | 365 | 490 | 12 | 13 | 14 | 16 | Structural |
| CGC570 | CG570 | 560 | 570 | --- | --- | --- | --- | Structural |
| ASTM Designation | Yield Point Minimum | Tensile Strength Minimum | Elongation Minimum % | Application | Q/BQB 445-2004(China standard) | ASM A653/A653M | JISG 3312 | |
| ksi(MPa) | ksi(MPa) | TDC51D+Z | (CS TYPE A+Z) | CGCC | ||||
| A653(M)-99 CS TYPE A,B,C | --- | --- | --- | Commercial | TDC52D+Z | CGCD | ||
| A653(M)-99 FS | --- | --- | --- | Lock Forming | TS250GD+Z | (G250+Z) | - | |
| A653(M)-99 DS | --- | --- | --- | Drawing | TS300GS+Z | (G300+Z) | CGC 400 | |
| A653(M)-99 SS Grade33(230) | 33(230) | 45(310) | 20 | Structural | TS350GD+Z | (G350+Z) | CGC490 | |
| A653(M)-99 SS Grade37(255) | 37(255) | 52(360) | 18 | Structural | TS550GD+Z | (G550+Z) | CGC570 | |
| A653(M)-99 SS Grade40(275) | 40(275) | 55(380) | 16 | Structural | ||||
| A653(M)-99 SS Grade50(345) | 50(345) | 65(450) | 12 | Structural | ||||
| A653(M)-99 SS Grade80(550) | 80(550) | 82(570) | --- | Structural | ||||
FAQ of Z29 BMP Rolled Steel Coil Construction Roofing Construction
We have organized several common questions for our clients，may help you sincerely：
1. How Can I Visit There?
Our company is located in Tianjin City, China, near Beijing. You can fly to Tianjin Airport Directly. All our clients, from home or aboard, are warmly welcome to visit us!
2. How Can I Get Some Sample?
We are honored to offer you sample.
3. Why choose CNBM?
1, ISO, BV, CE, SGS approved.
2, Competitive price and quality.
3, Efficient service team online for 24 hours.
4, Smooth production ability(50000tons/month) .
5, quick delivery and standard exporting package.
6, Flexible payment with T/T, L/C, Paypal, Kunlun bank, etc .
- Q: What are the different surface treatment methods used for steel billets?
- Steel billets undergo various surface treatment methods to enhance their properties and optimize their performance. Some commonly employed techniques include: 1. Pickling: By immersing steel billets in an acid bath, typically hydrochloric or sulfuric acid, any scale or oxides on the surface are effectively removed. This method improves surface finish and prepares billets for subsequent processing. 2. Shot blasting: High-velocity steel shots are used to subject steel billets to remove rust, scale, or contaminants from the surface. This method not only cleans the surface but also enhances its roughness, facilitating better adhesion of coatings or paints. 3. Phosphating: Applying a phosphate coating chemically onto the surface of steel billets is known as phosphating. This coating provides corrosion resistance and enhances paint adhesion. Phosphating is commonly employed as a pre-treatment method before applying organic coatings. 4. Galvanizing: A widely-used surface treatment method involves coating steel billets with a layer of zinc, known as galvanizing. This process ensures excellent corrosion resistance and safeguards the steel against environmental factors. Galvanized steel billets find extensive use in outdoor applications and industries where rust prevention is crucial. 5. Electroplating: Electroplating involves depositing a thin layer of metal, such as chromium or nickel, onto the surface of steel billets using an electric current. This method enhances aesthetic appearance, corrosion resistance, and wear resistance of the steel billets. 6. Coating: To provide a protective layer on the surface of steel billets, coating techniques such as painting, varnishing, or applying protective coatings are utilized. These coatings act as a barrier against corrosion, abrasion, and other forms of damage. Coatings can be applied using methods like spraying, dipping, or powder coating. 7. Passivation: Passivation is a chemical process employed to eliminate free iron and other contaminants from the surface of steel billets. This process aids in restoring the steel's passive film, which enhances corrosion resistance. Passivation is commonly employed in stainless steel billets to augment their resistance to rust and corrosion. These surface treatment methods significantly contribute to improving the quality, durability, and performance of steel billets, rendering them suitable for diverse applications across industries such as construction, automotive, and manufacturing.
- Q: What are the different quality standards for steel billets?
- There are several quality standards for steel billets, including ASTM (American Society for Testing and Materials), ISO (International Organization for Standardization), and EN (European Norm) standards. These standards define various parameters such as chemical composition, mechanical properties, and dimensional tolerances that steel billets must meet in order to ensure their quality and suitability for different applications.
- Q: What are the main factors affecting the dimensional accuracy of steel billets?
- The dimensional accuracy of steel billets can be influenced by several key factors. To begin with, the casting process's temperature is of utmost importance. Steel billets are typically cast at high temperatures, and any fluctuations or inconsistencies in temperature can result in dimensional inaccuracies. If the temperature is too high, the billet may expand, leading to dimensions larger than desired. Conversely, if the temperature is too low, the billet may contract, resulting in smaller dimensions than intended. Therefore, it is crucial to maintain a consistent and controlled temperature to achieve dimensional accuracy. Furthermore, the cooling process after casting also impacts the dimensional accuracy of steel billets. Rapid cooling can cause uneven contraction, leading to distortions in dimensions. Conversely, slow cooling can cause excessive growth and expansion of the billet. Hence, it is necessary to carefully control and optimize the cooling rate to ensure uniform and accurate dimensions. Moreover, the design and condition of the casting molds significantly influence the dimensional accuracy of steel billets. The mold should be appropriately designed to accommodate shrinkage and compensate for potential distortions. Additionally, the mold's condition, such as wear and tear or improper alignment, can also contribute to dimensional inaccuracies. Regular maintenance and inspection of molds are essential to ensure proper functioning and minimize any impact on dimensional accuracy. Finally, the composition and quality of the steel itself can affect the dimensional accuracy of the billets. Variations in chemical composition or impurities in the steel can lead to inconsistencies in the cooling and solidification process, resulting in dimensional inaccuracies. Hence, stringent quality control measures and precise composition monitoring are necessary to minimize variations in the steel and maintain dimensional accuracy. In conclusion, temperature control during casting, the cooling process, the design and condition of casting molds, and the composition and quality of the steel are the main factors affecting the dimensional accuracy of steel billets. By closely monitoring and controlling these factors, manufacturers can ensure the production of steel billets with accurate dimensions.
- Q: How long do steel billets typically last?
- Steel billets typically last for a very long time. The lifespan of a steel billet depends on various factors such as the quality of the steel, the environment it is exposed to, and how it is used. Generally, high-quality steel billets that are properly stored and handled can last for several decades without any significant deterioration. However, if the billets are exposed to harsh environments or are not properly maintained, their lifespan may be shortened. It is important to note that steel billets can be recycled and reused, further extending their overall lifespan.
- Q: What are the different surface treatment options for steel billets?
- Some of the different surface treatment options for steel billets include pickling, shot blasting, galvanizing, painting, and powder coating.
- Q: How are steel billets used in the manufacturing of bars and rods?
- Bars and rods are manufactured using steel billets, which are an essential part of the process. These billets have a cylindrical shape and act as the starting point for producing different types of bars and rods. To begin, steel billets are commonly created through continuous casting. This method involves pouring molten steel into a mold, which then solidifies and forms a billet. To enhance their workability and reduce the risk of cracking during subsequent processes, the billets are usually heated to a specific temperature. After the preparation of the billets, they are sent to rolling mills where they undergo intense pressure and high temperatures. This process, known as hot rolling, gradually shapes the billet into the desired form by passing it through a series of rollers. Depending on the specific requirements of the bar or rod being produced, the rolling mills can be equipped with different types of rolls, such as flat rolls or grooved rolls. During hot rolling, the billet is elongated and reduced in cross-sectional area, resulting in a longer and thinner product. This transformation enables the production of bars and rods with consistent dimensions and improved mechanical properties. Moreover, the hot rolling process refines the grain structure of the steel, thereby enhancing its strength and toughness. Following hot rolling, the bars or rods may undergo additional processes to achieve specific characteristics. These processes may include quenching and tempering, which optimize the mechanical properties of the final product, such as hardness and ductility. In conclusion, steel billets are crucial in the manufacturing of bars and rods. They are transformed through the hot rolling process to achieve the desired shape, dimensions, and mechanical properties. The versatility of steel billets allows for the production of a wide range of bars and rods used in various industries, including construction, automotive, and manufacturing.
- Q: What are the different heat treatment processes for alloy steel billets?
- Alloy steel billets can undergo various heat treatment processes depending on the desired properties and intended application. Some commonly used processes include: 1. Annealing: The billets are heated to a specific temperature and slowly cooled, typically in a furnace. This relieves internal stresses and improves machinability. 2. Normalizing: Similar to annealing, but the cooling is done in still air. It refines the grain structure and enhances mechanical properties like strength and hardness. 3. Quenching and tempering: The heated alloy steel is rapidly cooled in a liquid medium, such as oil or water, to achieve high hardness and strength. Subsequently, the billets are reheated to a lower temperature to reduce brittleness and improve toughness. 4. Precipitation hardening: This process is suitable for alloy steels containing elements like aluminum, copper, or titanium. It involves a series of heat treatments that cause fine particles to form within the steel, resulting in improved strength and hardness. 5. Case hardening: Used to increase the hardness of the outer layer of the billets, this surface heat treatment process involves heating in the presence of a carbon-rich atmosphere or applying a carbon-rich compound. It is followed by quenching and tempering. These are just a few examples of the many heat treatment processes available for alloy steel billets. The choice depends on factors such as alloy composition, desired properties, and intended application. It is essential to carefully consider these factors and seek advice from heat treatment experts to achieve the desired outcome.
- Q: How are steel billets used in the manufacturing of electrical components?
- The advantageous properties and suitability of steel billets make them commonly used in the manufacturing of electrical components. This process begins by producing steel billets, which are solid rectangular or square bars of steel formed through casting or hot rolling. When manufacturing electrical components, steel billets act as the raw material that undergoes various processes to become specific components. An example of this is the production of transformer cores, which are essential components in electrical transformers. Transformer cores made from steel billets offer high magnetic permeability, low hysteresis loss, and low electrical conductivity, making them perfect for magnetic induction applications. To manufacture transformer cores, the steel billets are heated and then shaped into thin laminations by passing them through a series of rolling mills. These laminations are stacked together and insulated with materials like varnish or paper, creating a core that efficiently transfers electrical energy between coils. Steel billets are also utilized in the production of electrical connectors, terminals, and busbars. These components require high strength, excellent electrical conductivity, and resistance to corrosion. Steel billets can be further processed using methods like forging, machining, or extrusion to create these components. Apart from transformers and electrical connectors, steel billets can be employed in manufacturing other electrical components such as motor cores, switchgear panels, and circuit breaker parts. The versatility of steel billets allows for the production of components with various shapes and sizes, catering to the specific requirements of the electrical industry. In conclusion, steel billets play a crucial role in the manufacturing of electrical components by providing a strong, durable, and cost-effective raw material that can be shaped and processed to meet the diverse needs of the electrical industry.
- Q: The role of carbon content in steels
- 2., the formation of carbide structure, can improve the hardness and wear resistance of steel, such as cementite, or Fe3C, that is, carbide organizationTherefore, the higher the carbon content in carbon steel, the higher the strength and hardness of the steel, but the plasticity and toughness will also be reduced. On the contrary, the lower the carbon content, the higher the plasticity and toughness of the steel, and its strength and hardness will also decrease
- Q: What are the main factors affecting the dimensional stability of steel billets?
- The main factors affecting the dimensional stability of steel billets include temperature variation, cooling rate, composition of alloying elements, and the presence of residual stresses.
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Z29 BMP Rolled Steel Coil Construction Roofing Construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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