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: How are steel round bars stored and transported?: Steel round bars are typically stored and transported using a variety of methods to ensure their safety and ease of handling. When it comes to storage, steel round bars are often stored in warehouses or outdoor yards. In these facilities, the bars are usually stacked horizontally on racks or placed on steel stands to prevent any damages or deformations. It is important to keep the bars off the ground to avoid contact with moisture and potential rusting. To facilitate transportation, steel round bars are commonly bundled together using steel straps or chains. These bundles are designed to keep the bars tightly secured and prevent any movement during transit. Additionally, the bundles are often labeled with relevant information such as the type of steel, dimensions, and weight to ensure proper identification and handling. When it comes to transportation, steel round bars can be shipped using various modes such as trucks, trains, or ships. Trucks and trains are commonly used for shorter distances, while ships are preferred for longer hauls, especially for international shipments. Depending on the size and weight of the bars, they can be loaded onto flatbed trucks or placed in shipping containers for transportation. During transportation, it is crucial to avoid any potential impacts or mishandling that could cause damage to the bars. Proper securing and bracing techniques are employed to minimize any movement or shifting of the bars in transit. This can include using blocking and bracing materials to prevent the bars from rolling or sliding. In summary, steel round bars are stored in warehouses or outdoor yards and are often bundled together using steel straps or chains. They are transported using trucks, trains, or ships, ensuring proper securing and bracing to prevent damage. By following these storage and transportation practices, steel round bars can be delivered to their destinations safely and efficiently.

Q: Can steel round bars be used for making fuel system components?: Yes, steel round bars can be used for making fuel system components. Steel is a common material used in the manufacturing of various fuel system components due to its strength, durability, and resistance to corrosion. Steel round bars can be machined, welded, and formed into different shapes and sizes, making them suitable for a wide range of fuel system applications. Additionally, steel's high melting point and ability to withstand high pressure and temperature conditions make it a reliable choice for fuel system components that are exposed to extreme conditions.

Q: What are the typical dimensions of a steel round bar?: The typical dimensions of a steel round bar vary depending on the intended application and industry standards. However, common sizes range from 1/4 inch to 12 inches in diameter, with lengths usually ranging from 10 to 20 feet.

Q: Can steel round bars be plated or coated?: Yes, steel round bars can be plated or coated. Plating or coating is a common practice used to enhance the appearance, durability, and corrosion resistance of steel round bars. The plating or coating process involves applying a layer of another material onto the surface of the steel round bars. This can be done through various methods such as electroplating, hot-dip galvanizing, powder coating, or painting. The chosen plating or coating material depends on the specific requirements and desired properties of the steel round bars. For example, zinc plating is commonly used to provide corrosion resistance, while chrome plating can enhance the aesthetic appeal. Overall, plating or coating steel round bars can significantly improve their performance and extend their lifespan.

Q: Can steel round bars be used for making tools or machinery parts?: Yes, steel round bars can be used for making tools or machinery parts. Steel round bars are known for their high strength, durability, and resistance to wear and tear. These properties make them ideal for applications in the manufacturing of tools and machinery parts that require high strength and reliability. Steel round bars can be machined, forged, or heat-treated to achieve the desired shape and properties required for specific tools or machinery parts. Additionally, steel round bars come in various grades, each with its own specific properties, allowing manufacturers to select the most suitable grade for their specific application. Overall, steel round bars are a versatile and commonly used material in the manufacturing industry for making tools and machinery parts.

Q: What are the different methods used for machining steel round bars?: Machining steel round bars involves the use of various methods, each with its own advantages and applications. Some commonly employed techniques are as follows: 1. Turning: To achieve the desired shape, the steel round bar is rotated against a cutting tool that removes material. Turning is suitable for both external and internal operations, ensuring high precision and excellent surface finish. 2. Milling: This versatile method employs a rotating multi-tooth cutter to remove material from the steel round bar, creating flat or contoured surfaces. It is ideal for face milling, slotting, and profiling. 3. Drilling: Holes of different sizes and depths are created in the steel round bar using a rotating drill bit. This method can be performed manually or through automated processes. 4. Grinding: Precision is key in grinding, a machining technique that employs abrasives to remove material from the steel round bar. It ensures smooth surface finish, tight tolerances, and precise dimensions. Grinding machines, such as cylindrical or surface grinders, are utilized. 5. Boring: Boring enlarges existing holes or creates internal cylindrical shapes within the steel round bar. This technique involves rotating a cutting tool inside the bar to achieve desired dimensions and surface finish. 6. Broaching: Complex internal or external shapes are created using a broach, a multi-toothed cutting tool. The broach is pushed or pulled through the steel round bar to remove material and form the desired shape. 7. Sawing: The steel round bar is cut into desired lengths or shapes using a rotating blade with teeth. Sawing is efficient for mass production and can be done manually or with automated machines. These methods are just a selection of the techniques used for machining steel round bars. The choice of method depends on factors such as the desired shape, dimensions, tolerances, and surface finish, as well as the production volume and available equipment.

Q: How do you determine the strength and hardness of a steel round bar?: To assess the strength and hardness of a steel round bar, a variety of tests and techniques can be utilized. The tensile strength test is a frequently employed method. During this test, an increasing load is applied to a sample of the steel round bar until it reaches its breaking point. The maximum load it can endure before breaking is recorded, providing an indication of the bar's strength. Another essential measure of steel round bar quality is hardness testing. The Rockwell hardness test is commonly used, involving the pressing of a diamond or tungsten carbide ball into the bar's surface with a specific load. The depth of the resulting indentation is measured, and the hardness value is determined according to a standardized scale. Additionally, the Brinell hardness test can be employed, which entails pressing a hardened steel ball into the round bar's surface with a specific load. The diameter of the resulting indentation is measured, allowing for the calculation of hardness based on the applied load and indentation size. Furthermore, non-destructive techniques such as ultrasonic testing and magnetic particle inspection can offer insight into the steel round bar's internal structure, defects, and cracks, indirectly indicating its strength and hardness. It is crucial to acknowledge that various factors, including steel composition, heat treatment, and manufacturing processes, can influence the strength and hardness of a round bar. Therefore, consulting relevant standards and specifications that define the expected properties for the specific type of steel round bar being tested is advisable.

Q: 1, three, two, steel, wire rod, round steel what is the difference?: Wire is a wire, usually refers to the use of "high speed non-twist wire rod rolling mill, ordinary common low carbon steel, hot-rolled wire torsion free cooling (ZBH4403-88) and the high quality carbon steel, hot-rolled wire rod without torsion cold control (ZBH44002-88).

Q: What are the advantages of using silicon-alloy steel round bars?: There are several advantages to using silicon-alloy steel round bars. Firstly, silicon-alloy steel has excellent strength and durability. It is known for its high tensile strength, which makes it suitable for applications that require heavy-duty performance. This strength also allows it to withstand heavy loads and resist deformation, making it a reliable choice for various mechanical and structural purposes. Secondly, silicon-alloy steel round bars have good heat resistance. The presence of silicon in the alloy improves its ability to handle high temperatures without losing its structural integrity. This makes it ideal for applications that involve exposure to extreme heat, such as in furnace components, exhaust systems, or high-temperature equipment. Additionally, silicon-alloy steel round bars offer excellent corrosion resistance. The alloying elements in silicon-alloy steel, such as chromium and nickel, help create a protective oxide layer on the surface, preventing the metal from corroding and prolonging its lifespan. This makes it suitable for use in marine environments or corrosive atmospheres. Furthermore, silicon-alloy steel round bars have good machinability and weldability. This means that they can be easily formed into various shapes and sizes, making them versatile for different manufacturing processes. The ability to weld silicon-alloy steel allows for easy fabrication and customization, making it a convenient choice for many industries. Lastly, silicon-alloy steel round bars are cost-effective. Compared to other high-performance alloys, silicon-alloy steel is relatively more affordable, making it a cost-effective option for applications that require strength, durability, and resistance to heat and corrosion. In conclusion, the advantages of using silicon-alloy steel round bars include excellent strength and durability, good heat resistance, corrosion resistance, machinability, weldability, and cost-effectiveness. These qualities make silicon-alloy steel a versatile and reliable material for various industrial applications.

Q: Can steel round bars be used for making cutting tools?: Yes, steel round bars can be used for making cutting tools. Steel is a versatile material known for its strength and durability, making it suitable for various applications including cutting tools. The round bars can be shaped and sharpened to create different types of cutting tools such as knives, blades, or drill bits.

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