Hot Rolled GB Standard Deformed Steel Rebars for Construction

Hot Rolled GB Standard Deformed Steel Rebars for Construction System 1

Hot Rolled GB Standard Deformed Steel Rebars for Construction

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Product Description:

OKorder is offering Hot Rolled GB Standard Deformed Steel Rebars for Construction at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Hot Rolled GB Standard Deformed Steel Rebars for Construction are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

1. Supporting members, most commonly in the house raising industry to strengthen timber bears under houses. Transmission line towers, etc

2. Prefabricated structure

3. Medium scale bridges

4. It is widely used in various building structures and engineering structures such as roof beams, bridges, transmission towers, hoisting machinery and transport machinery, ships, industrial furnaces, reaction tower, container frame and warehouse etc.

Product Advantages:

Hot Rolled GB Standard Deformed Steel Rebars for Construction are 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:

Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

High Quality Hot Rolled Equal Angle Steel Bars for Strcuture are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

1. Supporting members, most commonly in the house raising industry to strengthen timber bears under houses. Transmission line towers, etc

2. Prefabricated structure

3. Medium scale bridges

Product Advantages:

High Quality Hot Rolled Equal Angle Steel Bars for Constrcution are 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:

Specifications of Hot Rolled GB Standard Deformed Steel Rebars for Construction:

Standard	GB UK USA	HRB335 HRB400 HRB500 G460B, B500A, B500B,B500C GR40, GR60
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Packing	Export standard packing: wrapped by wire rod in bundles
Each bundle weight	2-3MT, or as required
Trade terms	FOB, CFR, CIF
Payment terms	TT payment in advance or Irrevocable LC at sight.
Delivery Detail	within 45 days after received advanced payment or LC.
Brand name	DRAGON

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

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m (kg)	Pcs/ton
6	28.27	0.222	2.664	375.38
8	50.27	0.395	4.74	210.97
10	78.54	0.617	7.404	135.06
12	113.1	0.888	10.656	93.84
14	153.9	1.21	14.52	68.87
16	201.1	1.58	18.96	52.74
18	254.5	2.00	24	41.67
20	314.2	2.47	29.64	33.74
22	380.1	2.98	35.76	27.96
25	490.9	3.85	46.2	21.65
28	615.8	4.83	57.96	17.25
32	804.2	6.31	75.72	13.21
36	1018	7.99	98.88	10.43
40	1257	9.87	118.44	8.44
50	1964	15.42	185.04	5.40

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

JISG3112 SD390	Chemical Composition
	C	Mn	Si	S	P
	0.22	1.38	0.4	0.014	0.022
	Physical capability
	Yield Strength(N/cm²)		Tensile Strength(N/cm²)		Elongation (%)
	620		≥400		21

The production process of Steel Rebar

1-Waling beam furnace 2-Roughing rolling group 3-Intermediate rolling train

4-Finishing rolling group 5-Water-cooling device 6-Walking beam cooler

7-Finishing equipment(including the cold scale shear,short feet collection system,

automatic counting device,bundling machine, collect bench)

Usage and Applications of Hot Rolled GB Standard Deformed Steel Rebars for Construction:

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 Hot Rolled GB Standard Deformed Steel Rebars for Construction:

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.

Price: Keep lower operating costs so as to offer competitive price for our clients

Deformed Steel Rebars according to Korean standard

Deformed Steel Rebars

Note:

1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.

2. Other Grade and Standard Deformed Steel Bar we can supply:

Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S

Standard: ASTM, BS, DIN

The Minimum Order Quantity of these products is high, and need to be confirmed.

3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.

4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.

Q:How do steel rebars affect the overall fire resistance of concrete structures?: Steel rebars can significantly improve the fire resistance of concrete structures. The high thermal conductivity of steel helps in dissipating heat away from the concrete, preventing rapid temperature rise and structural failure. Additionally, the presence of rebars enhances the load-bearing capacity of the structure during a fire, enabling it to withstand the intense heat for a longer duration before collapsing.

Q:What is the maximum spacing allowed between steel rebars in concrete slabs?: The maximum spacing allowed between steel rebars in concrete slabs typically depends on various factors such as the thickness of the slab, the load it will bear, and the design requirements. However, as a general guideline, the maximum spacing is often specified to be around 3 times the slab thickness or 18 inches (whichever is less) to ensure proper reinforcement and structural integrity.

Q:Can steel rebars be used in hotel construction?: Yes, steel rebars can be used in hotel construction. Steel rebars are commonly used as reinforcement in concrete structures, including hotel buildings, to enhance their strength and durability. They provide necessary support to the concrete, ensuring the structural integrity of the hotel during its lifespan.

Q:What are the main uses of steel rebars?: Steel rebars, otherwise known as reinforcing bars, serve as a crucial component in construction and civil engineering endeavors, granting robustness and steadiness to concrete structures. The primary applications of steel rebars encompass the following: 1. Reinforcement of Concrete: Steel rebars are strategically integrated within concrete structures to heighten their tensile strength. While concrete exhibits commendable resistance against compressive forces, it remains vulnerable in terms of tension. By incorporating rebars, the resulting composite material (reinforced concrete) is endowed with the ability to withstand both compressive and tensile forces, rendering it suitable for various applications such as building columns, beams, slabs, and foundations. 2. Enhancement of Structural Stability: Steel rebars play a pivotal role in elevating the structural stability of edifices and infrastructures. They facilitate the uniform distribution of loads across the structure, preventing the occurrence of cracks, sagging, or collapse. Through the reinforcement of concrete elements with rebars, structures become capable of enduring substantial loads, seismic activity, and other external forces. 3. Bridges and Highways: Steel rebars find extensive employment in the construction of bridges and highways. As bridges are routinely subjected to substantial loads and harsh environmental conditions, robust and durable reinforcement is imperative. Steel rebars ensure the longevity and structural integrity of these critical infrastructure projects. 4. Retaining Walls and Tunnels: Retaining walls serve the purpose of holding back soil or other substances, thereby preventing erosion. Steel rebars are commonly employed to reinforce these structures, enabling them to withstand the lateral pressures exerted by the retained material. Similarly, in tunnel construction, rebars bestow strength upon the concrete lining, ensuring stability and averting collapse. 5. Foundations: Steel rebars form an indispensable constituent in the construction of building foundations. They contribute to the even distribution of the structure's weight onto the ground, thereby averting the occurrence of settlement or sinking. Furthermore, rebars anchor the foundation to the ground, endowing it with stability against soil movement or seismic forces. 6. Pre-stressed and Post-tensioned Concrete: In the realm of pre-stressed and post-tensioned concrete construction, steel rebars are employed to introduce compressive forces into the concrete members. This technique elevates the structural performance by diminishing tensile stress, augmenting load-bearing capacity, and minimizing cracking. 7. Masonry Reinforcement: Steel rebars are also utilized to reinforce masonry structures such as walls, columns, and arches. By embedding rebars within mortar joints or cores, the overall strength and stability of the masonry system are enhanced, enabling it to withstand lateral loads and seismic forces. To summarize, steel rebars are indispensable in contemporary construction endeavors, furnishing concrete structures with strength, stability, and durability. By virtue of their capacity to resist tensile forces, they ensure the well-being and longevity of buildings, bridges, highways, tunnels, and other crucial infrastructure projects.

Q:How do steel rebars contribute to the stability of a structure?: Steel rebars contribute to the stability of a structure by providing additional strength and support to the concrete. They help to reinforce and enhance the tensile strength of the concrete, making it more resistant to bending, cracking, and structural failure. This reinforcement ensures that the structure can withstand various external forces, such as wind, seismic activity, and heavy loads, improving its overall stability and durability.

Q:How do steel rebars contribute to the overall durability and service life of concrete structures?: Concrete structures benefit from the inclusion of steel rebars in several ways, contributing to their overall durability and service life. To begin with, steel rebars are utilized in concrete structures to bolster their tensile strength. While concrete is strong under compression, it lacks strength when subjected to tension. Incorporating steel rebars, which possess high tensile strength, into the concrete significantly increases the overall strength and load-bearing capacity of the structure. This enables the structure to withstand external forces such as wind, earthquakes, or heavy loads, thereby reducing the risk of structural failure and enhancing its overall durability. Additionally, steel rebars play a vital role in preventing cracking and controlling the spread of cracks within concrete structures. As concrete dries and undergoes temperature fluctuations, it has a tendency to shrink and crack. The presence of steel rebars helps to distribute these forces and stresses throughout the structure, minimizing the formation and expansion of cracks. By restricting the propagation of cracks, the rebars contribute to the overall structural integrity and longevity of the concrete structure. Moreover, steel rebars offer reinforcement against corrosion. Concrete possesses high alkalinity, which generates a protective layer known as the passivation layer around the steel rebars. This layer safeguards the rebars from rusting and corroding when exposed to moisture or aggressive chemicals. By preserving the integrity of the rebars, the overall durability and service life of the concrete structure are enhanced. Furthermore, steel rebars are instrumental in improving the structural stability and resilience of concrete structures. By providing reinforcement and rigidity to the concrete, they aid in the even distribution and dissipation of applied loads and stresses. This diminishes the likelihood of localized failure and augments the structure's capability to withstand external forces and deformations. The presence of steel rebars also enhances the structural behavior of the concrete, rendering it more resilient to dynamic forces such as vibrations or impacts. In conclusion, steel rebars make a significant contribution to the overall durability and service life of concrete structures. They enhance the tensile strength of the concrete, prevent cracking and control the propagation of cracks, provide reinforcement against corrosion, and improve structural stability and resilience. By integrating steel rebars into concrete construction, engineers can create robust and long-lasting structures capable of withstanding various challenges, ensuring the safety and longevity of the built environment.

Q:How are steel rebars installed in concrete?: Steel rebars are installed in concrete by first determining the required size and spacing of the rebars based on the structural design. Then, the rebars are cut and placed in the formwork or mold before pouring the concrete. The rebars are positioned and tied together using wire or rebar tie clips to ensure they are securely embedded within the concrete. This reinforcement enhances the strength and durability of the concrete structure.

Q:Can steel rebars be used in structures with high noise reduction requirements?: When structures require high noise reduction, steel rebars may not be the most effective solution by themselves, although they can still be utilized. Steel rebars possess sound-dampening properties due to their common usage in construction. However, their primary purpose is to strengthen and reinforce structures, rather than minimize noise transmission. To achieve significant noise reduction in structures, additional measures must be taken, such as incorporating acoustic insulation materials or employing specific design techniques. These techniques may involve the utilization of double walls, sound-absorbing panels, resilient mounts, and other specialized acoustic treatments. Although steel rebars alone do not offer substantial noise reduction, they can still contribute to overall noise reduction endeavors when combined with other soundproofing techniques. It is advisable to consult acoustic experts or engineers to determine the most suitable combination of materials and design strategies to fulfill a structure's specific noise reduction requirements.

Q:What are the international standards for steel rebars?: The international standards for steel rebars are set by various organizations and bodies such as the International Organization for Standardization (ISO), American Society for Testing and Materials (ASTM), and the European Committee for Standardization (CEN). ISO provides standards for steel rebars under ISO 15630, which covers both hot-rolled and cold-worked rebars. This standard defines the requirements for the chemical composition, mechanical properties, dimensions, and tolerances of rebars used in reinforced concrete structures. ASTM has developed several standards for steel rebars, including ASTM A615/A615M and ASTM A706/A706M. ASTM A615/A615M covers deformed and plain carbon-steel rebars for concrete reinforcement, specifying the chemical composition, mechanical properties, dimensions, and marking requirements. ASTM A706/A706M focuses on low-alloy steel rebars with improved weldability, suitable for use in concrete structures where welding is required. In Europe, CEN has established the Eurocode 2 (EN 1992-1-1) as the primary standard for steel rebars. This code provides design rules for the structural use of concrete and includes guidelines for the selection and use of rebars. Additionally, CEN has also developed EN 10080, which specifies the requirements for steel rebars for concrete reinforcement, covering chemical composition, mechanical properties, dimensions, and tolerances. These international standards ensure the quality and consistency of steel rebars used in construction projects worldwide. Compliance with these standards helps to ensure the safety and reliability of reinforced concrete structures by providing guidelines for material properties, manufacturing processes, and quality control measures.

Q:What are the different types of steel rebars used in road constructions?: There are primarily three types of steel rebars commonly used in road constructions: plain carbon steel rebars, epoxy-coated rebars, and stainless steel rebars. Plain carbon steel rebars are the most widely used and cost-effective option, providing strength and durability to the road structure. Epoxy-coated rebars offer enhanced corrosion resistance, making them suitable for areas with high exposure to moisture or chemicals. Stainless steel rebars are highly resistant to corrosion and are often used in specific applications where durability and longevity are crucial, such as in aggressive environments or bridges.

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