12mm Steel Rebar Weight and Sizes System 1

12mm Steel Rebar Weight and Sizes System 2

12mm Steel Rebar Weight and Sizes System 3

12mm Steel Rebar Weight and Sizes System 4

12mm Steel Rebar Weight and Sizes

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 50000 m.t./month

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12mm Steel Rebar Weight and Sizes

Description of 12mm Steel Rebar:

1, Diameter: 5.5mm-10mm of 12mm Steel Rebar

10m- 40mm of 12mm Steel Rebar

2, Length: 6m, 9m, 12m or customized

3, Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN

OEM technology - send detailed technical parameters for accurate quotation.

2, Produce Process: smelt iron - EAF smelt billet - ESR smelt billet -

hot rolled or forged to get the steel round bar and plate

3, Heat Treatment: annealing, normalizing, tempering, quenching

4, Surface Treatment: Black

5, Quality Assurance: We accept third party inspection for all orders.

You can ask testing organizations such as SGS, BV, etc. to test our products before shipping.

Chemical Composition of 12mm Steel Rebar:

Grade	Technical data of the original chemical composition(%)
Reinforcing steel bar HRB335	C	Mn	Si	S	P	B
	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045	>0.0008
	Physics Capability
	Yield Strength(N/cm2)	Tensile Strength(N/cm2)	Elongation(%)
	≥ 335	≥490	≥16
Reinforcing steel bar HRB400	C	Mn	Si	S	P	B
	≤0.25	≤0.16	≤0.80	≤0.045	≤0.045	0.04-0.12
	Physics Capability
	Yield Strength(N/cm2)	Tensile Strength(N/cm2)	Elongation(%)
	≥ 400	≥ 570	≥ 14

Product Show of 12mm Steel Rebar:

Company Information:

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

Verified Suppliers Bs4449 Deformed Steel Bar Manufacturer

FAQ:

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Q:What are the requirements for special steel used in agricultural machinery?: Different components or parts in agricultural machinery have varying requirements for special steel. However, there are common requirements that generally apply to most agricultural machinery. 1. To withstand harsh conditions including heavy loads, friction, and exposure to elements, special steel used in agricultural machinery must have high strength and durability. 2. Special steel should possess good corrosion resistance properties to prevent rusting and degradation over time, as agricultural machinery is often exposed to moisture, chemicals, and other corrosive substances. 3. To ensure prolonged service life and reduce maintenance costs, special steel should have excellent wear resistance, as components like blades, gears, and bearings undergo repetitive and abrasive actions. 4. Special steel should exhibit high toughness to absorb sudden impacts, shock loads, and vibrations without fracture or fatigue failure, as agricultural machinery encounters these forces during operation. 5. Special steel should have good machinability, including properties like good formability, weldability, and ease of heat treatment, to enable efficient and accurate machining processes during manufacturing. 6. While meeting the above requirements, special steel used in agricultural machinery should also be cost-effective, striking a balance between performance and cost without compromising quality and performance. In conclusion, the selection of special steel for agricultural machinery should consider specific application requirements such as load capacity, environmental conditions, and expected service life. Meeting these requirements ensures efficient and reliable operation with minimal downtime.

Q:What is the impact of grain size on the mechanical properties of special steel?: The impact of grain size on the mechanical properties of special steel is significant. Grain size refers to the size and distribution of individual crystals within the steel structure. It is determined by factors such as the cooling rate during solidification and subsequent heat treatments. In general, a smaller grain size in special steel leads to improved mechanical properties. This is because smaller grains offer a greater number of grain boundaries, which act as barriers to dislocation movement and improve the strength of the steel. Smaller grains also provide a more uniform microstructure, enhancing the overall toughness and resistance to fracture. Additionally, a smaller grain size promotes higher hardness and increased wear resistance in special steel. This is due to the increased number of grain boundaries that hinder the movement of dislocations, preventing plastic deformation and leading to higher hardness values. On the other hand, larger grain sizes can negatively impact the mechanical properties of special steel. Larger grains have fewer grain boundaries, allowing dislocations to move more freely. This results in reduced strength, toughness, and hardness of the steel. Furthermore, larger grains can also lead to anisotropic behavior, where the mechanical properties differ in different crystallographic directions, making the steel more susceptible to failure under certain loading conditions. Therefore, controlling and optimizing the grain size in special steel is crucial to achieve desired mechanical properties. This can be achieved through precise heat treatments, such as annealing or quenching, which control the cooling rate and subsequent recrystallization processes. By controlling the grain size, special steel can be tailored to meet specific application requirements, ensuring optimal mechanical performance and reliability.

Q:How does special steel contribute to the construction sector?: Special steel contributes to the construction sector by providing enhanced strength, durability, and corrosion resistance to various structural components. Its unique properties enable the construction of high-rise buildings, bridges, and infrastructure projects that can withstand extreme conditions and last for decades. Additionally, special steel offers flexibility in design, allowing for innovative and efficient construction techniques.

Q:How does special steel compare to other materials like aluminum or titanium?: Special steel, such as stainless steel or tool steel, offers several advantages over materials like aluminum or titanium. Firstly, special steel generally exhibits higher strength and hardness, making it ideal for applications requiring durability and resistance to wear. Secondly, special steel possesses excellent thermal conductivity, allowing it to dissipate heat more efficiently compared to aluminum or titanium. Additionally, special steel is often more cost-effective and readily available in comparison to titanium. However, aluminum and titanium are known for their lightweight properties, making them preferable for applications where weight reduction is crucial. Ultimately, the choice between special steel, aluminum, or titanium depends on the specific requirements and constraints of the intended application.

Q:Can special steel be used in the food processing industry?: Yes, special steel can be used in the food processing industry. Special steel, such as stainless steel, is commonly used in food processing equipment and utensils due to its corrosion resistance, durability, and ability to maintain hygiene standards. It is suitable for applications that require frequent cleaning, exposure to moisture, and contact with food, ensuring the safety and quality of food processing operations.

Q:What are the challenges faced in the manufacturing process of special steel?: To ensure the production of high-quality special steel, numerous challenges must be addressed in the manufacturing process. Some of the key challenges faced are as follows: 1. Raw material selection: It is crucial to choose the appropriate raw materials with specific alloying elements in precise proportions to achieve the desired properties of special steels. Consistently ensuring the availability and quality of these raw materials can be challenging. 2. Alloy design and composition: Designing the alloy composition to meet specific requirements can be a complex task. Achieving the desired balance of strength, hardness, toughness, corrosion resistance, and other properties necessitates thorough research, testing, and expertise. Developing new alloys with improved properties can be particularly difficult. 3. Melting and refining: Special steels are typically produced using electric arc furnaces or induction melting. Ensuring precise temperature control, proper cooling rates, and refining processes to eliminate impurities like sulfur, phosphorus, and non-metallic inclusions are crucial. Advanced technology and precise control are necessary to maintain consistent quality. 4. Heat treatment: Heat treatment is a critical step in the special steel manufacturing process. Achieving the desired microstructure and properties through processes like quenching, tempering, annealing, or precipitation hardening can be challenging. Proper temperature control, heating and cooling rates, and time durations are essential to obtain the desired properties. 5. Quality control and testing: Consistently ensuring quality throughout the manufacturing process is of utmost importance. Regular testing and inspection to detect and eliminate defects, inconsistencies, and non-conformities are necessary. This includes dimensional accuracy, mechanical properties testing, non-destructive testing, and chemical analysis. 6. Production efficiency: Special steel manufacturing often involves complex procedures and longer processing times compared to regular steel production. Optimizing the production process to maximize efficiency, minimize waste, and reduce energy consumption is an ongoing challenge. Implementing lean manufacturing principles and utilizing advanced technologies can help address these challenges. 7. Environmental considerations: The production of special steel can have a significant environmental impact. Addressing issues such as energy consumption, waste management, emissions control, and water usage is crucial for sustainable production. Complying with environmental regulations and adopting eco-friendly practices can be challenging yet necessary. Overcoming these challenges requires a combination of technical expertise, research and development, investment in advanced equipment and technologies, and an ongoing commitment to quality control and process improvement.

Q:How does the availability of raw materials affect the production of special steel?: The availability of raw materials significantly impacts the production of special steel. Raw materials, such as iron ore, coal, and various alloys, are crucial components in the steel manufacturing process. A limited supply or increased cost of these materials can hinder production and result in higher production costs. Additionally, the quality and consistency of raw materials influence the final product's properties and performance. Therefore, the availability of raw materials directly affects the overall production capacity, cost-effectiveness, and quality of special steel.

Q:What are the different pharmaceutical grades of special steel?: There are several different pharmaceutical grades of special steel, including 316L, 904L, and 2205. These grades are chosen for their high corrosion resistance, excellent mechanical properties, and their ability to withstand harsh environments in pharmaceutical manufacturing processes.

Q:What are the main advantages of using special steel in the construction industry?: The main advantages of using special steel in the construction industry are its high strength, durability, and resistance to corrosion. Special steel has superior mechanical properties compared to regular steel, allowing for the construction of stronger and more robust structures. It can withstand heavy loads, extreme weather conditions, and natural disasters, ensuring the safety and longevity of buildings. Additionally, its corrosion resistance properties reduce maintenance costs and extend the lifespan of structures, making it a cost-effective choice in the long run.

Q:What are the main environmental impacts of special steel production?: The main environmental impacts of special steel production include emissions of carbon dioxide (CO2) and other greenhouse gases, energy consumption, deforestation (for charcoal used in the production process), water pollution (from the disposal of waste materials and chemicals), and habitat destruction due to mining activities. Additionally, the extraction and processing of raw materials for special steel production, such as iron ore and coal, can contribute to land degradation and ecosystem disruption.

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