HIGH QUALITY HOT ROLLED ROUND BAR Q235 ou Q195

HIGH QUALITY HOT ROLLED ROUND BAR Q235 ou Q195 System 1

HIGH QUALITY HOT ROLLED ROUND BAR Q235 ou Q195

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 m.t./month

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Round bar Details:

Brand Name: N-RIVER Place of Origin: Hebei, China Mainland Application: construction, building etcProduct Description:

Specifications of Wire Rod Q235:

Steel Grade: Q235, Standard: GB Diameter: 5.5mm, 6.5mm, 7mm,8mm,9mm,10mm,12mm,14mm

Diameter Tolerance:±0.3mm 6.5mm can be drawing into 2mm/8.0mm can be drawing into 3mm

Chemical Composition:

Please kindly find our chemistry of our material based on Q235 as below for your information

Trademark	Rank	Chemical composition (quality score) %
		C	Si	Mn	S	P
		C	Si	Mn	S	P
			≤		≤	≤
Q235	A	0.14-0.22	0.30	0.30-0.65	0.050	0.045
Q235	B	0.12-0.20	0.30	0.30-0.70	0.045	0.045
Trademark	Rank	Pulling Test
		Bend PointΔs/Mpa		Tensile Strength	Elongation Ratioδ5%
					Elongation Ratioδ5%
		Thickness (Diameter) /MM			Thickness (Diameter) /MM
		≤16	16-40		≤16	16-40
		≥			≥
Q235	A	235	225	375-500	26	25
Q235	B	235	225	375-500	26	25

Usage and Applications of Wire Rod Q235:

After hot-rolled the products shaped into coil and delivery as finished product, including round, square, rectangular, hexagonal and so on. Since most of the products are round, it is generally called wire rod. Carbon steel wire rod is widely used in construction and manufacturing. Carbon steel wire rod is mainly used for reinforcement of reinforced concrete and welded structure or reprocessed (roberts , nail, etc.) materials, especially used to produce wire drawing, welding electrode, nails, spring, electronic, precise machinery parts and so on.

Packaging & Delivery of Wire Rod Q235:

Packaging Detail: products are packed in coil and then shipped by container or bulk vessel

Each coil weight: 2-3MT

Delivery Detail: within 45 days after received deposit or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

HIGH QUALITY HOT ROLLED ROUND BAR Q235 ou Q195

Q: How are steel round bars stored and transported?: Steel round bars are typically stored in warehouses or storage facilities. They are often stacked horizontally on racks or placed in designated storage areas. To prevent damage and ensure easy accessibility, bars of different sizes or grades are segregated and labeled accordingly. When it comes to transportation, steel round bars are commonly loaded onto flatbed trucks or shipping containers, depending on the quantity and distance of the shipment. To prevent movement and potential damage during transit, bars are secured using straps or other fastening methods. Additionally, protective coatings or wrapping materials may be applied to safeguard against corrosion or moisture. Overall, proper storage and transportation practices are crucial to maintain the quality and integrity of steel round bars.

Q: What is the tensile strength of round steel bars of diameter 28?: The maximum tensile strength of material resistance uniform plastic deformation, tensile specimens before under maximum tensile stress, the deformation is uniform, but beyond the metal after the necking phenomenon began to appear, which produce concentrated deformation; for no (or very small) brittle materials with uniform plastic deformation, it reflects the fault the resistance of the material. The symbol is Rm (GB/T 228-1987, the old GB standard, the tensile strength symbol is b), the unit is MPa.

Q: Can steel round bars be used in the production of bearings?: No, steel round bars cannot be used in the production of bearings. Bearings require specific materials that can withstand high loads and offer low friction. Steel round bars are not designed with the necessary characteristics to fulfill these requirements. Instead, bearings are typically made from specialized materials such as chrome steel, stainless steel, or ceramic materials, which offer excellent durability and performance under the demanding conditions in which bearings operate.

Q: What are the different welding techniques for steel round bars?: Steel round bars can be welded using various techniques. Here are some commonly used ones: 1. Stick welding, also known as Shielded Metal Arc Welding (SMAW): This technique involves using an electrode coated in flux to create an electric arc between the electrode and the workpiece. The base metal melts, resulting in a weld. 2. Gas Metal Arc Welding (GMAW), commonly referred to as MIG (Metal Inert Gas) welding: In this technique, a wire electrode is fed through a welding gun. It combines with a shielding gas to create a weld. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a continuously fed electrode. However, instead of a solid wire electrode, it uses a tubular electrode filled with flux. This flux protects the weld and adds strength. 4. Tungsten Inert Gas (TIG) welding, also known as Gas Tungsten Arc Welding (GTAW): This precise technique involves using a non-consumable tungsten electrode to create an arc. Additional material may be added using a filler rod. 5. Submerged Arc Welding (SAW): This technique is suitable for heavy-duty applications, such as welding steel round bars for structural purposes. The arc and welding zone are submerged in granular flux, providing protection and deep penetration. Each technique has its advantages and is suitable for specific applications. Factors like round bar thickness, required weld strength, and accessibility of the welding site should be considered when selecting the appropriate technique for a strong and durable weld on steel round bars.

Q: How to distinguish a round bar from forging? Cold drawing? Hot rolling?: Hot rolled round steel, used in construction and general hardware parts processing is very common. Cold drawn round steel (do not know is not cold dial round bar). But I understand by the cold dial round bar Also mainly used in hardware parts processing and production. Such as hinge shaft core or other surface and diameter requirements of production and processing occasions.

Q: What are the different grades of stainless steel round bars for marine applications?: The different grades of stainless steel round bars for marine applications include 316, 316L, and 304.

Q: Can steel round bars be used in the fabrication of machinery?: Yes, steel round bars can definitely be used in the fabrication of machinery. Steel round bars are commonly used in the manufacturing industry for various applications, including the fabrication of machinery and equipment. They possess several desirable properties that make them suitable for this purpose. Firstly, steel round bars offer excellent strength and durability. They are known for their high tensile strength, which means they can withstand heavy loads and resist deformation. This strength is crucial in machinery fabrication, as the components of machinery need to be able to endure the stresses and forces that they will be subjected to during operation. Additionally, steel round bars have good machinability, which means they can be easily shaped and formed into the desired components for machinery. This makes them highly versatile and allows for the creation of complex and intricate machine parts. Furthermore, steel round bars have good resistance to corrosion and wear, which is essential in machinery fabrication. Machinery often operates in harsh environments or comes into contact with various substances, such as chemicals, oils, or abrasive materials. The corrosion and wear resistance of steel round bars ensure that the fabricated machinery can withstand these conditions and maintain its performance over time. Lastly, steel round bars are readily available and cost-effective. They can be easily sourced from suppliers and manufacturers, making them a practical and economical choice for machinery fabrication. Overall, steel round bars are a popular and reliable material for the fabrication of machinery. Their strength, machinability, resistance to corrosion and wear, and availability make them an ideal choice for creating durable and high-performing machine components.

Q: What are the different types of heat treatment for steel round bars?: Steel round bars commonly undergo various heat treatment methods to enhance their mechanical properties and overall performance. These methods include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing: Steel round bars are heated to a specific temperature and gradually cooled to room temperature. This process reduces internal stresses, improves machinability, and enhances ductility. 2. Normalizing: The steel round bars are heated above the critical range and cooled in still air. Normalizing refines the grain structure and improves mechanical properties like strength and toughness. 3. Quenching: Steel round bars are heated to a high temperature and rapidly cooled by immersing them in a quenching medium such as water, oil, or polymer. This results in a hardened microstructure, increasing hardness and wear resistance. 4. Tempering: After quenching, the steel round bars undergo tempering. The quenched steel is reheated to a specific temperature and cooled in still air. Tempering reduces brittleness caused by quenching, increases toughness, and relieves residual stresses. 5. Case hardening: This process increases the hardness and wear resistance of the outer surface of steel round bars while maintaining a tough and ductile core. Case hardening involves heating the steel in a carbon-rich atmosphere or applying a carbon-rich substance, followed by quenching and tempering. Each heat treatment method has its advantages and is chosen based on the desired properties and applications of the steel round bars. It is crucial to select the appropriate heat treatment process to achieve the desired mechanical properties and performance.

Q: What is the cost of a steel round bar?: The price of a steel round bar can fluctuate based on various elements, including its dimensions, quality, and the source from which it is obtained. Typically, the larger the diameter and length of the round bar, the more expensive it becomes. Moreover, the steel grade significantly influences the cost since different grades possess different levels of robustness and endurance. Furthermore, the supplier and location also influence the price due to factors such as transportation and market demand. To obtain a precise cost estimation, it is advisable to reach out to a nearby supplier or consult online metal marketplaces for up-to-date pricing information.

Q: How about the difference between round steel and shaped steel? Where are they mainly used?: Low carbon steel Q235 steel hot rolled into a round, mainly used in concrete. Medium and high carbon tool steels are wound into large diameter round bars and are used in the machinery industry for cutting into components.

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