Hot Sale GB Standard Round Bar Carbon Steel Round Bar

Short Description:

GB round bar is a metal rod made from carbon steel, an iron-carbon alloy. Available in a variety of shapes and sizes, such as round, square, flat, and hexagonal, carbon steel bars are commonly used in construction, manufacturing, and industry. These bars have high tensile strength and are known for their durability and corrosion resistance, making them suitable for a variety of structural and mechanical applications.

Model Number: Q235,Q345,10#-70#,SAE1010-1080,etc.

Technique: Hot Rolled

Standard: GB

Certification: ISO

Delivery Term: FOB CIF CFR EX-W

Contact Us: +86 13652091506

Email: [email protected]

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Product Detail

Product Tags

The details of a carbon structure steel round bar typically include the dimensions, such as diameter and length, as well as the specific grade or specification, which indicates the composition and properties of the steel. Common carbon steel round bar grades include AISI 1018, 1045, and 1144. These bars are commonly used in machining, manufacturing, and construction applications due to their high strength, machinability, and weldability. Carbon steel round bar may also have specific requirements for surface finish, tolerances, and any applicable industry standards (such as ASTM or SAE).

PRODUCT PRODUCTION PROCESS

1. Raw Material Preparation
1. Material Selection: Select high-quality steel with no scale, cracks or fissures, and minimal impurities as raw material.
2. Cutting: Cut the raw material into appropriate lengths and diameters, ensuring a smooth, crack-free cut surface.
2. Refining
1. Impurity Removal: Remove impurities from the raw material using a magnetic separator or manual sorting.
2. Preheating: Heat the raw material in a furnace to a specific temperature to prepare for subsequent processing.
3. Refining: Place the preheated raw material in a refining furnace for high-temperature treatment to remove harmful substances such as carbon, sulfur, and phosphorus, and adjust the carbon content.
3. Processing and Forming
1. Preforming: Process the refined raw material into bars of a specific shape.
2. Heat Treatment: Heat the preformed bars to a specific temperature and maintain the temperature for a period of time to adjust the mechanical properties of the bars.
3. Cooling: Allow the heated bars to cool naturally in air.

4. Finishing: The steel round bar is further subjected to fine processing such as wire cutting and polishing to achieve higher precision and surface quality.

PRODUCT SIZE

Product Name:	steel bar
Diameter	2~500mm
Length	3000~6000mm
Type	Round/Square/Hexagonal/Angle/Flat Bar	Round/Square/Hexagonal/Angle/Flat Bar
Surface Treatment:	Clean, blasting and painting according to customer requirement
Thickness tolerance：	±0.1mm
Material：	20#- 35# 45# 50#, 16Mn-50Mn 30Mn2-50Mn2 20Cr, 20Cr, 40Cr 20CrMnTi 20CrMo;15CrMo；30CrMo 35CrMo 42CrMo; 42CrMo4 60Si2mn 65mn 27SiMn;20Mn; 40Mn2; 50Mn; 1cr13 2cr13 3cr13 -4Cr13;etc. Q195; Q235(A,B,C,D R); Q345(B,C,D R); Q345QC Q345QD SPCC SPCD SPCD SPCE ST37 ST12 ST15 DC01 DC02 DC03 DC04 DC05 DC06
Application：	ApplicationIt is widely used in small tools, small components, iron wire, siderosphere, pull rod, ferrule, weld assembly, structural metal, connecting rod, lifting hook, bolt, nut, spindle, mandrel, axle, chain wheel, gear, car coupler.
MOQ:	25tons.We also can accept sample order.
Shipment time:	Within 15-20 workdays after receiving deposit or TT and L/C
Export packing:	Waterproof paper, and steel strip packed.Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Capacity:	250,000 tons/year
Usage	Widely used in shipbuilding, petrochemicals, machinery, medicine, electricity, energy, architectural decoration, nuclear power, aerospace, seawater equipment, chemicals, pigments, papermaking, oxalic acid, fertilizers, coastal areas, facilities, ropes, screws, nuts, etc.

GB Standard Round Bar

Specifications: Q235,Q355,20,45,40Gr

Standard: GB/T 1499.2-2007

GB/T 1499.3-2010

Size:6-12M or customer's requirement

Round steel rod properties table
diameter mm	Section cm²	unit mass kg/m	diameter mm	Section cm²	unit mass kg/m
6	0.283	0.222	(45)	15.9	12.5
7	0.385	0.302	46	16.6	13.0
8	0.503	0.395	48	18.1	14.2
9	0.636	0.499	50	19.6	15.4
10	0.785	0.617	(52)	21.2	16.7
11	0.950	0.746	55	23.8	18.7
12	1.13	0.888	56	24.6	19.3
13	1.33	1.04	60	28.3	22.2
(14)	1.54	1.21	64	32.2	25.3
16	2.01	1.58	65	33.2	26.0
(18)	2.55	2.00	(68)	36.3	28.5
19	2.84	2.23	70	38.5	30.2
20	3.14	2.47	75	44.2	34.7
22	3.80	2.98	80	50.3	39.5
24	4.52	3.55	85	56.8	44.6
25	4.91	3.85	90	63.6	49.9
(27)	5.73	4.50	95	70.9	55.6
28	6.16	4.83	100	78.5	61.7
30	7.07	5.55	110	95.0	74.6
32	8.04	6.31	120	113	88.7
(33)	8.55	6.71	130	133	104
36	10.2	7.99	140	154	121
38	11.3	8.90	150	177	139
(39)	11.9	9.38	160	201	158
42	13.9	10.9	180	255	200
			200	314	247

FEATURES

Hot rolled steel round bars are typically produced through a hot rolling process, where steel is heated above its recrystallization temperature and then passed through a series of rollers to achieve the desired shape. The main features of hot rolled steel round bars include:

Strength: Hot-rolled round steel is renowned for its strength and toughness, making it suitable for a wide range of industrial applications.

Ductility: This type of steel is generally characterized by its ductility, making it easy to form and process into a variety of products.

Surface Finish: Due to the nature of the hot-rolling process, the surface of hot-rolled round steel may be rough and scaly. However, further processing can be performed to achieve a smoother surface if desired.

Versatility: Hot-rolled round steel is widely used in various industries, including construction, manufacturing, and automotive, due to its versatility and structural integrity.

Availability: These round steels are available in a variety of sizes and grades to meet specific application needs.

APPLICATION

Mild steel round bars have a wide range of applications due to their versatile properties. Some common applications include:

Construction: Mild steel bar is used in building construction to reinforce concrete structures such as buildings, bridges, and roads.

Manufacturing: Due to its ease of processing and durability, mild steel bar is also used in the manufacture of machinery, equipment, and components.

Automotive: Mild steel bar is used in the manufacture of automotive parts such as axles, shafts, and various structural components.

Agricultural Equipment: Due to its high strength and ease of forming, mild steel bar is used in the manufacture of agricultural machinery and equipment.

General Manufacturing: Mild steel bar is widely used in general manufacturing applications, including the production of gates, fences, frames, and other structural components.

DIY Projects: Due to its availability and ease of handling, mild steel bar is often used in the creation of DIY furniture, decorative items, and small structural components.

Toolmaking: Mild steel bar is also used in the manufacture of hand tools, machine tools, and industrial equipment.

PACKAGING AND SHIPPING

Packaging:

Securely stack steel bars: Steel bars should be stacked neatly and stably, ensuring alignment and preventing instability. Use strapping or lashing tape to secure the bars and prevent them from shifting during transport.

Protective packaging: Wrap steel bars in moisture-proof material (such as plastic or waterproof paper) to protect them from water, moisture, and other environmental factors. This helps prevent rust and corrosion.

Transportation:

Select an appropriate transportation method: Based on the quantity and weight of the steel bars, choose an appropriate method of transport, such as a flatbed truck, container, or ship. Consider factors such as distance, time, cost, and traffic regulations.

Use appropriate lifting equipment: When loading and unloading steel bars, use appropriate lifting equipment, such as cranes, forklifts, and loaders. Ensure the equipment has sufficient capacity to safely handle the weight of the bars.

Secure the load: Use strapping, brackets, or other appropriate methods to properly secure the packaged rebar to the transport vehicle to prevent it from shifting, sliding, or falling during transport.

COMPANY STRENGTH

Made in China, first-class service, cutting-edge quality, world-renowned
1. Scale effect: Our company has a large supply chain and a large steel factory, achieving scale effects in transportation and procurement, and becoming a steel company that integrates production and services
2. Product diversity: Product diversity, any steel you want can be purchased from us, mainly engaged in steel structures, steel rails, steel sheet piles, photovoltaic brackets, channel steel, silicon steel coils and other products, which makes it more flexible Choose the desired product type to meet different needs.
3. Stable supply: Having a more stable production line and supply chain can provide more reliable supply. This is especially important for buyers who require large quantities of steel.
4. Brand influence: Have higher brand influence and larger market
5. Service: A large steel company that integrates customization, transportation and production
6. Price competitiveness: reasonable price

*Send the email to [email protected] to get a quotation for your projects

CUSTOMERS VISIT

FAQ

1.How can I get a quotation from you ?
You can leave us message, and we will reply every message in time.

2.Will you delivery the goods on time?
Yes,we promise to provide best quality products and delivery on time. Honesty is our company's tenet.

3.Can I get samples before order ?
Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

4.What is your payment terms?
Our usual payment term is 30% deposit, and rest against B/L. EXW, FOB,CFR, CIF.

5.Do you accept the third party inspection?
Yes absolutely we accept.

6.How do we trust your company?
We specialise in steel business for years as golden supplier, headquarter locates in Tianjin province, welcome to investigate in any ways, by all means.

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carbon steel round bar