High Quality Steel Round Bar Q235, A36, SS400

High Quality Steel Round Bar Q235, A36, SS400 System 1

High Quality Steel Round Bar Q235, A36, SS400

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Loading Port:: Lianyungang

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Specifications of High Quality Steel Round Bar Q235, A36, SS400

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

Usage and Applications of High Quality Steel Round Bar Q235, A36, SS400

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.

Packaging & Delivery of High Quality Steel Round Bar Q235, A36, SS400

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Production Flow of High Quality Steel Round Bar Q235, A36, SS400

The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process. The main measures process is high temperature solution and refinement cycle. High temperature solution can improve the carbide morphology and particle size. The aim is to make the loop refinement ultrafine austenite grains.

Q:Can steel round bars be used in the production of HVAC equipment?: Certainly, HVAC equipment production can indeed make use of steel round bars. In the manufacturing of diverse HVAC components such as air ducts, frames, supports, brackets, and other structural elements, steel round bars find extensive application. Steel is widely preferred in HVAC equipment owing to its exceptional strength, durability, and resistance to corrosion. Its high tensile strength ensures its suitability in handling the mechanical stresses and loads encountered by HVAC systems. Furthermore, steel can endure high temperatures and is non-combustible, rendering it a secure material for HVAC purposes. On the whole, the reliability, longevity, and performance of steel round bars make them extensively employed in HVAC equipment production.

Q:How strong are steel round bars compared to other materials?: Steel round bars are known for their exceptional strength and durability, making them one of the strongest materials available. Compared to other materials such as aluminum, brass, and wood, steel round bars have a significantly higher tensile strength, which refers to the amount of pulling force a material can withstand without breaking. Steel round bars can also handle higher compressive loads, making them ideal for applications where heavy loads or pressure is involved. In addition to their high strength, steel round bars also exhibit excellent ductility, which means they can be easily shaped or bent without breaking. This characteristic makes steel round bars versatile and widely used in various industries such as construction, automotive, manufacturing, and aerospace. While other materials may have their own unique properties and applications, steel round bars remain a top choice when it comes to strength and reliability. Their ability to withstand high loads, resist deformation, and maintain structural integrity make them a popular choice for structural components, shafts, axles, and many other demanding applications.

Q:How do you calculate the strength of a steel round bar?: The strength of a steel round bar is typically calculated using the formula for tensile strength, which is the maximum amount of tensile stress that a material can withstand before breaking. This is determined by dividing the maximum load applied to the bar during a tensile test by its cross-sectional area.

Q:What are the different types of steel round bar alloys used in aerospace applications?: The different types of steel round bar alloys used in aerospace applications include stainless steel, nickel-based alloys, and titanium alloys. These alloys are chosen for their high strength-to-weight ratios, corrosion resistance, and ability to withstand extreme temperatures and pressures encountered in aerospace environments.

Q:Can steel round bars be used for making heat exchangers?: Yes, steel round bars can be used for making heat exchangers. Steel is a commonly used material in heat exchangers due to its excellent thermal conductivity, high strength, and resistance to corrosion. Steel round bars can be easily machined and shaped to meet the specific requirements of a heat exchanger design. Additionally, steel is readily available and cost-effective, making it a popular choice for manufacturing heat exchangers in various industries. However, it is important to consider the specific application and operating conditions of the heat exchanger to ensure that the chosen steel grade is compatible and can withstand the required temperature and pressure.

Q:Are steel round bars resistant to chemicals?: The resistance of steel round bars to chemicals can vary depending on the specific steel type and the chemicals involved. Stainless steel round bars are well-known for their exceptional resistance to a wide range of chemicals, including acids, alkalis, and various organic compounds. This is because stainless steel contains high levels of chromium, which creates a protective oxide layer on the surface, preventing corrosion and chemical attacks. However, not all steel round bars possess the same level of chemical resistance. Carbon steel round bars, for example, are more prone to corrosion and chemical attacks compared to stainless steel. Corrosive chemicals, especially in highly corrosive environments, can affect carbon steel and cause damage. In such cases, it may be necessary to use additional protective measures, such as coatings or treatments, to enhance the chemical resistance. To summarize, stainless steel round bars provide excellent chemical resistance, whereas carbon steel round bars may require extra precautions to prevent chemical corrosion. When assessing the chemical resistance of steel round bars, it is crucial to consider the specific steel type, the type of chemical, and the environmental conditions.

Q:Can steel round bars be used in the manufacturing of hydraulic components?: Indeed, the utilization of steel round bars is feasible for the production of hydraulic components. Owing to its robustness, endurance, and corrosion resistance, steel is widely employed in the fabrication of hydraulic components. By molding and machining steel round bars, an assortment of hydraulic components, including pistons, cylinders, valves, and fittings, can be manufactured. The adoption of steel round bars guarantees the capability of withstanding elevated pressures and maintaining optimal performance across diverse hydraulic systems.

Q:What is the composition of steel round bars?: Steel round bars are typically composed of iron and carbon, with small amounts of other elements such as manganese, silicon, and sulfur. The exact composition can vary depending on the specific grade and intended use of the steel.

Q:How are steel round bars used in the construction of transmission towers?: Transmission towers commonly use steel round bars due to their strength, durability, and ease of fabrication. These bars, typically made from high-strength carbon steel, come in various diameters to meet different structural needs. In transmission tower construction, steel round bars serve as the primary structural elements. They form the vertical and diagonal members that provide strength and stability to the tower. The bars are connected using welding or bolted connections to create the lattice structure of the tower. The round shape of the bars allows for even distribution of forces, making them ideal for handling the loads and stresses experienced by transmission towers. These loads include the tower's weight, electrical conductors, and environmental factors like wind, ice, and seismic forces. Moreover, steel round bars offer excellent corrosion resistance, which is crucial for transmission towers exposed to harsh weather conditions. This resistance helps extend the tower's lifespan and ensures the safety and reliability of the transmission lines. Additionally, steel round bars can be easily fabricated and customized to meet the specific design requirements of the transmission tower. They can be cut, bent, and shaped to the desired dimensions, providing flexibility in tower design and construction. In conclusion, steel round bars play a crucial role in the construction of transmission towers by providing strength, durability, and corrosion resistance. Their versatility and ability to withstand various loads make them an essential component in ensuring the safe and reliable transmission of electricity.

Q:What are the advantages of using nickel-chromium alloy steel round bars?: There are several advantages of using nickel-chromium alloy steel round bars in various applications. Firstly, nickel-chromium alloy steel round bars have excellent corrosion resistance properties. The presence of nickel and chromium elements in the alloy enhances its ability to resist corrosion from various environmental factors such as moisture, chemicals, and oxidation. This makes these round bars suitable for use in challenging environments such as marine applications, chemical processing plants, and oil refineries. Secondly, nickel-chromium alloy steel round bars offer high temperature resistance. The combination of nickel and chromium elements in the alloy allows it to withstand elevated temperatures without losing its structural integrity. This makes them suitable for use in heat exchangers, furnaces, and other high-temperature applications. Additionally, nickel-chromium alloy steel round bars have superior mechanical properties. They exhibit excellent strength, toughness, and wear resistance, making them ideal for applications that require high load-bearing capabilities. These round bars also exhibit good ductility, allowing for ease of machining and fabrication. Moreover, nickel-chromium alloy steel round bars have good electrical conductivity. This makes them suitable for electrical and electronic applications where conductivity is essential, such as in the manufacturing of resistors, heating elements, and electrical connectors. Lastly, nickel-chromium alloy steel round bars are readily available and cost-effective. As a widely used material in various industries, these round bars are easily accessible and can be obtained at competitive prices. In summary, the advantages of using nickel-chromium alloy steel round bars include excellent corrosion resistance, high-temperature resistance, superior mechanical properties, good electrical conductivity, and cost-effectiveness. These characteristics make them a preferred choice for a wide range of applications in industries such as construction, automotive, aerospace, and electrical engineering.

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