1.What is Steel Rebar?
Steel Rebar is a kind of steel Rebar, which is a kind of building materials. For example, in reinforced concrete, it is used to support the skeleton of the structure. Steel used for reinforced concrete and prestressed reinforced concrete has a circular cross-section, and some are square with rounded corners, such as plain round, ribbed and twisted steel Rebars. Its main material is iron, as well as some carbon elements, which are mainly used to adjust its hardness and toughness.
2.What are the steel Rebar models?
1. According to the diameter, it can be divided into steel wire (diameter 3~5mm), fine steel Rebar (diameter 6~10mm) and thick steel Rebar (diameter greater than 22mm).
2. Divided by rolling shape
(1) Smooth steel Rebars: Grade I steel Rebars (Q235 steel Rebars) are rolled into smooth round sections, supplied in the form of coils, with a diameter of no more than 10mm and a length of 6m~12m.
(2) Ribbed Steel Rebar: there are three types of spiral, herringbone and crescent. Generally, Grade II and III Steel Rebar are rolled into herringbone, and Grade IV Steel Rebar is rolled into spiral and crescent.
(3) Steel wire (low carbon steel wire and carbon steel wire) and steel strand.
(4) Cold rolled and twisted steel Rebars: cold rolled and cold twisted.
Rebar model
3. According to the production process, the hot-rolled, cold-rolled and cold drawn steel Rebars, as well as the heat-treated steel Rebars made of Grade IV steel Rebars after heat treatment, have higher strength than the former.
Steel Rebar model 4. Grade I Steel Rebar (235/370) according to mechanical properties; Grade II Steel Rebar (335/510); Grade III Steel Rebar (370/570) and Grade IV Steel Rebar (540/835).
Rebar model 5. According to its role in the structure, it can be divided into compression Rebar, tensile Rebar, erection Rebar, distribution Rebar, stirrup, etc
3.What are the grades of Steel Rebar？
The steel grade of Steel Rebar is different, and the chemical composition is different. HRB335 Steel Rebar is 20MnSi (20 manganese silicon); HRB400 Rebar is 20MnSiV or 20MnSiNb or 20MnTi.
Due to the different chemical composition and ultimate strength of steel Rebars, the steel Rebars are different in toughness, cold bending, fatigue resistance and other properties.
The strength of Rebar grades are different. The tensile and compressive design strength of HRB335 Rebar is 300MPa, and the tensile and compressive design strength of HRB400 Rebar is 360MPa.
Grade I steel Rebars usually refer to round steel Rebars and coil elements used in buildings. They have no threads on their surfaces and are generally of smaller specifications.
There is no difference on the surface between Grade III and Grade II steel Rebars, which is the difference in materials and therefore physical properties. But both are deformed steel Rebars with threads on the surface. All sizes and specifications are available. However, the smallest ones will not be smaller than the specifications of disc elements and round steel.
Rebar grade In the construction industry, HPB235 hot rolled plain Rebar is also known as Q235, commonly known as Grade I steel 11G atlas has been changed to HPB300, HRB335 hot rolled ribbed Rebar is commonly known as Grade II steel, HRB400 hot rolled ribbed Rebar is commonly known as Grade III steel, RRB400 waste heat treatment Rebar supplement specification, and HRB500 hot rolled ribbed Rebar is commonly known as Grade IV.
4.What are the specifications of steel Rebars？
Grade I steel (smooth round) - 6.5, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, etc.
Grade II steel (ribbed) - 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, etc.
Grade III steel (ribbed) - 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, etc.
The common diameters of steel Rebars are 6, 6.5, 8, 12, 14, 16, 18, 20, 22, 25, 28 and 32. Steel Rebar (Rebar) refers to steel used for reinforced concrete and prestressed reinforced concrete, whose cross section is round, sometimes square with rounded corners. All diameters described above are in millimeters.
Plain round steel Rebars, ribbed steel Rebars and twisted steel Rebars. Steel Rebar for reinforced concrete refers to straight or coiled steel used for Steel Rebar of reinforced concrete. Its appearance is divided into smooth round Steel Rebar and deformed Steel Rebar, and the delivery status is straight Rebar and coiled round Steel Rebar. Plain round steel Rebars are actually small round steel Rebars and coiled steel Rebars of ordinary low-carbon steel.
Deformed steel Rebars are surface ribbed steel Rebars, usually with two longitudinal ribs and transverse ribs evenly distributed along the length direction. The shape of the transverse rib is spiral, herringbone, and there are 3 kinds of tooth shapes. It is expressed in millimeters of the nominal diameter. The nominal diameter of deformed Steel Rebar is equivalent to the nominal diameter of plain round Steel Rebar with equal dry cross section. The nominal diameter of Steel Rebar is 8-50 mm, and the recommended diameters are 8, 12, 16, 20, 25, 32 and 40 mm.
5.What should we pay attention to when purchasing Steel Rebar？
1. Judging from the appearance of the steel Rebars, the outer layer of high-quality steel Rebars has excellent finish, uniform color, smoothness and tidiness, and is free from defects such as cracks and scars. The end faces are normally round, while the end faces of low-quality steel Rebars are oval, with uneven color and roughness.
2. Judging from the sign and quality specification of the steel Rebar, the outer layer of high-quality and qualified steel Rebars will be marked with the name, diameter and production address of the manufacturer. Generally, the packaging of regular merchants is complete and complete, while low-quality steel Rebars are packaged in small bundles without labels or quality certificates.
3. Judging from the size and specification of the Steel Rebar, you can take a vernier caliper to measure its value, check its inner diameter, outer diameter, transverse rib height and spacing, and ensure that it conforms to the above values. If there is any deviation, it must be within the allowable range, while the outer diameter of inferior Steel Rebar products will be smaller, and the values will vary greatly.
6.Use of Steel Rebar
Steel Rebar for reinforced concrete refers to straight or coiled steel used for Steel Rebar of reinforced concrete. Its appearance is divided into smooth round Steel Rebar and deformed Steel Rebar, and the delivery status is straight Rebar and coiled round Steel Rebar.
Plain round steel Rebars are actually small round steel Rebars and coiled steel Rebars of ordinary low-carbon steel. Deformed steel Rebars are surface ribbed steel Rebars, usually with two longitudinal ribs and transverse ribs evenly distributed along the length direction. The shape of transverse rib is spiral, herringbone and crescent. It is expressed in millimeters of the nominal diameter. The nominal diameter of deformed Steel Rebar is equivalent to the nominal diameter of plain round Steel Rebar with equal cross section. The nominal diameter of Steel Rebar is 8-50 mm, and the recommended diameters are 8, 12, 16, 20, 25, 32 and 40 mm. Steel type: 20MnSi, 20MnV, 25MnSi, BS20MnSi. The Steel Rebar mainly bears tensile stress in concrete. Deformed steel Rebars have greater bonding capacity with concrete due to the role of ribs, so they can better withstand the role of external forces. Steel Rebar is widely used in various building structures. Especially large, heavy, light thin-walled and high-rise building structures
7.Steel Rebar in the United Arab Emirates
The United Arab Emiratesis one of our major exporting countries. We welcome customers from the United Arab Emiratesis to place orders.
HDT Tubing Co., Ltd. (https://www.hdtsteel.com) is a large Stainless Steel Plate manufacturer in China. The company advanced production equipment, strong technical force, perfect after-sales service. Products are exported to Europe, America, Middle East, Africa, Southeast Asia and other countries and regions, well received by customers. The company has sufficient inventory, first-class service, welcome customized procurement.
8.Steel Rebar Price
Steel Rebar prices fluctuate with the steel market. Size, quantity, payment method and so on are all factors that affect the price. Anyway, we will provide you with the most favorable price under the premise of guaranteeing the quality. If you want the detailed price, please leave a message so that we can give you the most accurate quotation.
