deformed steelbar

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HIGH QUALITY HOT ROLLED STEELDIN STANDARD REBAR

Standard	GB	HRB400
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Place of origin	Hebei, China mainland
Advantages	exact size, regular package, chemical and mechanical properties are stable.
Type	Hot rolled deformed steel bar
Brand name	DRAGON

Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P		V
HRB400	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045		0.04-0.12
	Physical capability
	Yield Strength (N/cm²)		Tensile Strength (N/cm²)			Elongation (%)
	≥400		≥570			≥14

Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m bar(kg)
6	28.27	0.222	2.664
8	50.27	0.395	4.74
10	78.54	0.617	7.404
12	113.1	0.888	10.656
14	153.9	1.21	14.52
16	201.1	1.58	18.96
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76
25	490.9	3.85	46.2
28	615.8	4.83	57.96
32	804.2	6.31	75.72
36	1018	7.99	98.88
40	1257	9.87	118.44
50	1964	15.42	185.04

Usage and Applications of HRB400 Deformed Steel Bar:

Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger..

Packaging & Delivery of HRB400 Deformed Steel Bar:

Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.

Each bundle weight: 2-3MT, or as required

Q:Can steel rebars be recycled after demolition?: It is possible to recycle steel rebars once a demolition takes place. Steel is widely recycled worldwide due to its durability and recyclable properties. Once a building or structure is demolished, the steel rebars can be removed and transported to recycling facilities. These facilities employ different techniques, including shredding and melting, to separate the steel from other substances and reshape it into fresh products. By recycling steel rebars, not only is the amount of waste going to landfills reduced, but natural resources are also conserved, and carbon emissions related to steel production are decreased.

Q:What are the common challenges faced during the installation of steel rebars?: Some common challenges faced during the installation of steel rebars include ensuring proper placement and alignment, dealing with the weight and size of the rebars, avoiding damage to the rebars during handling and transportation, ensuring adequate anchorage and spacing, and coordinating with other construction activities to avoid conflicts.

Q:Are there any health or safety concerns associated with steel rebars?: Yes, there are potential health and safety concerns associated with steel rebars. Some of the concerns include physical injuries from handling and working with heavy steel bars, such as cuts, bruises, and strains. Additionally, exposure to steel dust or fumes during cutting, welding, or grinding processes can pose respiratory hazards. It is important to follow proper safety protocols, such as wearing personal protective equipment, ensuring proper ventilation, and using appropriate tools, to minimize these risks.

Q:Are there any limitations or disadvantages of using steel rebars?: Yes, there are limitations and disadvantages of using steel rebars. Firstly, steel rebars are susceptible to corrosion when exposed to moisture and chemicals, leading to structural degradation over time. This corrosion can weaken the reinforcement and compromise the overall strength and durability of the structure. Additionally, steel rebars have a high thermal expansion coefficient, causing them to expand and contract with temperature variations, potentially leading to cracks in the concrete. Furthermore, steel rebars are heavy and require specialized equipment for handling and installation, increasing construction costs. Lastly, steel rebars are a finite resource, and their production contributes to carbon emissions and environmental degradation.

Q:What is the role of steel rebars in column and beam construction?: Steel rebars play a crucial role in column and beam construction as they provide reinforcement, strength, and stability to the structure. In reinforced concrete construction, columns and beams are typically made of concrete, which is strong in compression but relatively weak in tension. This is where steel rebars come in. Rebars, also known as reinforcing bars, are long steel rods that are strategically placed within the concrete to counteract its weakness in tension. They are typically made of high-strength steel and are designed to withstand the tensile forces that occur in a structure. By adding rebars to the concrete, the resulting composite material can resist both compression and tension, making it much stronger and more durable. In column construction, steel rebars are placed vertically and tied together in a grid-like pattern. This reinforcement helps the column support the weight of the structure and resist vertical loads, such as the weight of the floors or roof above. The rebars also help to prevent the column from buckling or collapsing under these loads. Similarly, in beam construction, steel rebars are placed horizontally within the concrete beam. These rebars help the beam to resist bending and shear forces, which are common in structural elements that span across openings or support loads from above. By providing reinforcement, the rebars ensure that the beam remains stable and can safely bear the imposed loads. Overall, the role of steel rebars in column and beam construction is to enhance the strength, stability, and load-bearing capacity of the structure. They effectively improve the structural integrity of the concrete elements, allowing them to withstand the various forces and loads they will be exposed to throughout their lifespan. Without the presence of rebars, columns and beams would be much weaker and more susceptible to failure, compromising the safety and longevity of the overall structure.

Q:Can steel rebars be used in reinforced masonry?: Yes, steel rebars can be used in reinforced masonry. Steel rebars are commonly used to enhance the strength and stability of masonry structures, such as walls or columns. The rebars are embedded within the masonry, providing added tensile strength and preventing cracking or failure under load.

Q:Can steel rebars be used in renovation or retrofitting projects?: Yes, steel rebars can definitely be used in renovation or retrofitting projects. Steel rebars are commonly used in construction to reinforce concrete structures, and they can also be used in renovation projects to strengthen existing structures. When renovating or retrofitting a building, it is often necessary to reinforce the existing structure to meet modern building codes or to support additional loads. Steel rebars can be used to strengthen walls, columns, beams, or slabs by adding additional reinforcement to the concrete. By incorporating steel rebars into a renovation project, the structural integrity of the building can be improved, ensuring its safety and longevity.

Q:What is the role of steel rebars in load-bearing structures?: The role of steel rebars in load-bearing structures is to provide reinforcement and increase the overall strength and durability of the structure. Steel rebars are embedded within concrete to enhance its tensile strength, as concrete alone is weak in tension. By distributing and resisting the applied loads, rebars help prevent cracks and failures, ensuring the stability and longevity of the load-bearing structure.

Q:What is the thermal expansion coefficient of steel rebars?: The thermal expansion coefficient of steel rebars typically ranges between 10 and 12 x 10^-6 per degree Celsius.

Q:Are steel rebars resistant to chemicals?: Yes, steel rebars are generally resistant to chemicals. The corrosion resistance properties of steel rebars make them suitable for use in various chemical environments. However, exposure to certain aggressive chemicals or environments may lead to corrosion over time, so it is essential to consider the specific conditions and choose the appropriate type of steel or protective coatings accordingly.

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