High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195

High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195 System 1

High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195

Ref Price:: $400.00 / m.t.

Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Product Applications:

1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.

2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.

3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.

4) Is used for cold forging die and drawing mode, etc.

5) Recommended watchcase factory, screw factory and other cold stamping products industry use.

Product Advantages:

OKorder's High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195are durable, strong, and resist corrosion.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

1. Grade: GB, JIS, ASTM, EN

2. Grade: Q235, SS400, A36, S235JR

3. Diameter and mass: As below

Diameter	Mass	Diameter	Mass	Diameter	Mass
(mm)	(kg/m)	(mm)	(kg/m)	(mm)	(kg/m)
6	0.22	22	2.98	53	17.30
7	0.30	24	3.55	56	19.30
8	0.40	25	3.85	60	22.20
9	0.50	26	4.17	63	24.50
10	0.62	28	4.83	65	26.00
11	0.75	30	5.55	70	30.20
12	0.89	32	6.31	75	34.70
13	1.04	34	7.13	80	39.50
14	1.21	36	7.99	85	44.50
15	1.39	38	8.90	90	49.90
16	1.58	40	9.86	95	55.60
17	1.78	42	10.90	100	61.70
18	2.00	45	12.50	120	88.85
19	2.23	48	14.20	140	120.93
20	2.47	50	15.40	150	138.82

4. Material: Mild Steel

5. Heat treatment of high quality steel:

Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.

Preheat temperature: 730-730 °C

Quenching temperature: 1190-1210 °C

Tempering temperature: 540-595 °C

Cold drawn, hardness 285 HBS

Cold drawn after annealing condition, hardness 277 HBS

Quenching methods: oil quenching, air cooling or salt bath quenching

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195

Q: Can steel round bars be used for making conveyor belts or rollers?: No, steel round bars are not typically used for making conveyor belts or rollers. Conveyor belts and rollers are usually made from materials such as rubber, polyurethane, or other flexible and durable materials that can withstand the constant movement and friction involved in conveying items.

Q: Can steel round bars be threaded?: Yes, steel round bars can be threaded. Threading refers to the process of cutting threads onto the surface of a cylindrical object, such as a steel round bar, to create a screw-like shape. This allows the bar to be securely fastened into a corresponding threaded hole or to join with another threaded component. Threading can be done using different methods, such as manual threading with a die or using machine tools like lathes or thread rolling machines. The specific method used depends on the size and type of thread required. However, it is important to note that not all steel round bars are suitable for threading, as the material composition and hardness of the steel can affect the threading process. Therefore, it is recommended to consult with a professional or experienced personnel to ensure the steel round bar is suitable for threading and to determine the appropriate threading method.

Q: What are the different types of steel round bars used in the automotive braking systems?: Automotive braking systems rely on various types of steel round bars that possess specific properties for optimal performance. These steel variants are carefully selected for their strength, durability, and ability to withstand the intense temperatures and pressures that arise during braking. One commonly utilized steel round bar is carbon steel, renowned for its exceptional hardness and high strength. Brake rotors and drums often incorporate carbon steel round bars due to their ability to endure the heat and friction generated during braking, ensuring reliable and long-lasting performance. Stainless steel represents another steel round bar employed in automotive braking systems. Its resistance to corrosion and rust make it an ideal choice for brake lines and fittings. Additionally, stainless steel boasts excellent heat resistance properties, enabling it to endure the thermal stresses generated during braking. Furthermore, alloy steel round bars find application in automotive braking systems. Combining various metals like chromium, nickel, and molybdenum, alloy steel enhances its mechanical properties. Known for their remarkable tensile strength and toughness, alloy steel round bars suit demanding applications that require superior performance and durability. Specialized types of steel round bars also exist, designed specifically for particular applications within automotive braking systems. For instance, heat-treated steel round bars are employed in the manufacturing of brake calipers and pistons due to their capability to withstand the extreme temperatures resulting from the friction between brake pads and rotors. In summary, the selection of steel round bars in automotive braking systems hinges upon specific requirements, encompassing strength, durability, heat resistance, and corrosion resistance. By carefully choosing the appropriate steel variant, automotive manufacturers can guarantee the safety and reliability of their braking systems.

Q: What are the advantages of using nickel-molybdenum alloy steel round bars?: There are several advantages of using nickel-molybdenum alloy steel round bars: 1. High strength and durability: Nickel-molybdenum alloy steel round bars have excellent strength and durability properties, making them suitable for use in high-stress applications. They can withstand heavy loads and provide long-lasting performance. 2. Corrosion resistance: The addition of nickel in the alloy enhances its corrosion resistance, making it resistant to various corrosive environments. This makes nickel-molybdenum alloy steel round bars ideal for use in industries where exposure to chemicals or moisture is common, such as the oil and gas industry or marine applications. 3. High temperature resistance: Nickel-molybdenum alloy steel round bars exhibit excellent heat resistance properties, allowing them to maintain their mechanical strength and structural integrity at high temperatures. This makes them suitable for use in applications where elevated temperatures are present, such as heat exchangers or power generation equipment. 4. Excellent machinability: Nickel-molybdenum alloy steel round bars can be easily machined and fabricated, allowing for various customization options. This makes them versatile and easily adaptable to different project requirements. 5. Weldability: These alloy steel round bars have good weldability, which means they can be easily joined to other components or structures using standard welding techniques. This makes them convenient for manufacturing processes and construction projects. 6. Cost-effective: Despite their excellent properties, nickel-molybdenum alloy steel round bars are relatively cost-effective compared to other high-performance alloys. This makes them a cost-efficient choice for various applications, providing value for money without compromising on quality. Overall, the advantages of using nickel-molybdenum alloy steel round bars include high strength, corrosion resistance, temperature resistance, machinability, weldability, and cost-effectiveness. These properties make them a preferred choice for various industries and applications where superior performance and durability are required.

Q: Can steel round bars be coated with protective finishes?: Yes, steel round bars can be coated with protective finishes. Coating steel round bars with protective finishes is a common practice to enhance their durability and resistance to corrosion. There are various types of protective finishes that can be applied to steel round bars, including but not limited to galvanizing, powder coating, and epoxy coating. These finishes help to prevent the steel bars from rusting and deteriorating over time, extending their lifespan and ensuring their performance in various environments. The choice of protective finish depends on factors such as the intended use of the steel round bars, the level of exposure to moisture or corrosive substances, and the desired aesthetic appearance.

Q: What are the advantages of using precipitation-strengthened steel round bars?: One advantage of using precipitation-strengthened steel round bars is their superior strength and hardness. The precipitation-hardening process allows for the formation of fine and evenly dispersed particles, enhancing the material's mechanical properties. This makes them suitable for applications that require high strength and durability, such as in construction, manufacturing, and automotive industries. Additionally, precipitation-strengthened steel round bars have excellent corrosion resistance, enabling them to withstand harsh environments and prolonged exposure to moisture without compromising their strength.

Q: How can steel round bars be protected against rust?: Steel round bars can be protected against rust through various methods. One common way is by applying a protective coating, such as paint or a rust-resistant primer. This coating acts as a barrier between the steel and the surrounding environment, preventing moisture and oxygen from coming into contact with the metal surface. Another effective method is to galvanize the steel round bars. Galvanization involves immersing the steel in a bath of molten zinc, which forms a protective layer on the surface. This zinc coating acts as a sacrificial barrier, meaning that even if it gets scratched or damaged, it will still protect the underlying steel. Regular maintenance is crucial in preventing rust on steel round bars. This includes keeping the bars clean and dry, as moisture is a major catalyst for rust formation. Regularly inspecting the bars for any signs of rust or damage and promptly addressing them is also important in preventing further corrosion. Furthermore, storing the steel round bars in a dry and well-ventilated area can help reduce the chances of rusting. If possible, keeping the bars elevated off the ground or using a moisture-absorbing material, such as silica gel packets, can further protect against moisture buildup. Lastly, utilizing corrosion inhibitors or rust-preventative oils can provide an additional layer of protection for steel round bars. These substances create a thin film on the surface that inhibits the formation of rust. By employing these methods, steel round bars can be effectively protected against rust, ensuring their longevity and maintaining their structural integrity.

Q: Can steel round bars be used in outdoor applications?: Yes, steel round bars can be used in outdoor applications. Steel is a strong and durable material that is resistant to corrosion, making it suitable for outdoor use. Round bars are often used in construction, manufacturing, and infrastructure projects, where they provide structural support and reinforcement. Additionally, steel round bars can withstand various weather conditions, including rain, snow, and extreme temperatures, without losing their strength or integrity. However, it is important to select the appropriate type of steel for the specific outdoor application to ensure optimal performance and longevity.

Q: How many tons of pressure can the round steel of 70 inches bear?: This simply refers to the vertical compression. The problem of the bracket is whether the round steel is vertically compressed, whether the stiffness of the structure can be safely supported, whether the supporting foundation can withstand the pressure or not, that is a must be taken into consideration.

Q: What are the different types of steel used in round bars?: Round bars are produced using various types of steel. The most common options are as follows: 1. Carbon Steel: This basic steel variant contains a low carbon content (typically less than 1%) and is recognized for its robustness and durability. Carbon steel is often utilized in construction and structural projects. 2. Alloy Steel: By introducing elements like manganese, chromium, or nickel to carbon steel, alloy steel is created. These additives enhance the steel's strength, hardness, and ability to resist corrosion. Machinery and automotive components frequently employ alloy steel round bars. 3. Stainless Steel: Stainless steel is composed of at least 10.5% chromium by mass. This high chromium content grants stainless steel its distinctive properties, including corrosion resistance and a shiny appearance. Stainless steel round bars find wide applications in the food industry, construction, and in environments requiring high corrosion resistance. 4. Tool Steel: Designed to endure high temperatures and resist wear and tear, tool steel is a specialized steel type. It is commonly employed in the production of tools, dies, and in settings necessitating exceptional strength and hardness. 5. Duplex Stainless Steel: This stainless steel variant combines austenite and ferrite phases in its microstructure. As a result, it possesses superior strength and corrosion resistance compared to regular stainless steel. Duplex stainless steel round bars are frequently utilized in marine and chemical industries. In summary, the selection of steel for round bars is contingent upon specific requirements such as strength, corrosion resistance, and temperature resistance, depending on the intended application.

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