Wire Rod

Wire rod is a kind of metal material, generally referring to high-strength steel wire with a diameter greater than or equal to 5mm. It has the characteristics of high strength, good durability, good anti-corrosion performance, etc, and can withstand large tension and pressure. Most of the high-quality high-strength steel materials are high-strength steel, which has strong tensile strength and ductility, but it also needs to be enhanced by surface treatment and other measures to enhance its durability. Wire rod has sufficient rigidity and flexibility, and is suitable for applications such as building reinforcement and seismic reinforcement. Wire rod is produced by steel mills and undergoes quality control processes to ensure it meets the required specifications and standards. The production process involves heating the billet and then passing it through a series of rollers to reduce its diameter and shape it into a wire form. Wire rod has a circular cross-section and is typically produced in coils. It comes in different sizes and grades, depending on the intended application. The diameter of wire rod can range from a few millimeters to several centimeters.

Wire rod is known for its excellent strength and flexibility, making it suitable for a wide range of applications.
It is often used as a raw material for the production of various wire products, such as fencing, nails, screws, springs, and wire mesh. It is also utilized in the automotive industry for the manufacturing of engine parts, suspension components, and wire harnesses.
In the construction sector, wire rod is commonly used in concrete reinforcement to enhance the strength and durability of structures. It is also employed in the production of pre-stressed concrete, which is widely used in bridges, buildings, and other infrastructure projects.

In addition to the fields of construction engineering, bridge engineering and tunnel engineering, the wire rod can also be used in many fields such as shipbuilding, railway engineering, electric power engineering, and petrochemical engineering. For example, the wire rod can be used to strengthen and maintain ships, improve the transport capacity and stability of ships; it can also be used to strengthen and repair railway bridges, water conservancy dams, power towers, etc., to enhance their load-bearing capacity and safety.

Overall, wire rod is a versatile and essential product in various industries, playing a crucial role in manufacturing a wide array of products that we use in our daily lives.It can not only improve the overall strength and stability of the structure, but also enhance the durability and seismic performance of the project. With the development of science and technology and the continuous innovation of engineering technology, the application prospect of wire rod will be more extensive.

Wire rod specifications and standards can vary by country and region. Here are some commonly used specifications for wire rod in China, the United States, the United Kingdom, and Japan.

China Standard:
GB/T 4354-2008: Hot rolled quality carbon steel wire rods
GB/T 3429-2015: Wire rods for welding
GB/T 14981-2009: Dimension shape mass and tolerance for hot-rolled round wire rod

American standard:
ASTM A510/A510M: Standard specification for general requirements for wire rods and coarse round wire, carbon steel
ASTM A853/A853M: Standard specification for steel wire, carbon, for general use
ASTM A510M-18: Standard specification for general requirements for wire rods and coarse round wire, carbon steel (Metric)

British Standards:
BS 4449: Steel for the reinforcement of concrete - Weldable reinforcing steel - Bar, coil and decoiled product - Specification
BS 4482: Steel wire for the reinforcement of concrete products - Specification
BS EN 10025-2: Hot-rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels

Japanese Standards:
JIS G 3503: Wire rods for core wire of covered electrode
JIS G 3506: High carbon steel wire rods
JIS G 3560: Coated steel wire ropes

There are three main standard documents related to wire rod, including GB/T 4354-2008, GB/T 3429-2015 and GB/T 14981-2009. the following contents are the specific specification standards summarized according to these three standards:

GB/T 4354-2008:
According to GB/T 4354-2008, the dimensional standards of wire rod are as follows:
Diameter range: 5.5 mm to 20 mm
Allowable deviation: for wire rod with diameter from 5.5 mm to 10 mm, the allowable deviation of diameter is ±0.25 mm; for wire rod with diameter from 11 mm to 20 mm, the allowable deviation of diameter is ±0.5 mm.

GB/T 3429-2015
According to GB/T 3429-2015, wire rod size standards are as follows:
Diameter range: generally 5.5mm to 14mm, other diameter ranges of wire rod can also be produced according to specific needs.
Diameter tolerance: depending on the diameter, the tolerance range is between ±0.20mm to ±0.30mm.
Shape: wire rod should have a smooth surface without obvious defects such as pits, wrinkles, cracks, etc.
Steel type: wire rod can be made of general carbon structural steel or alloy structural steel.

GB/T 14981-2009
According to GB/T 14981-2009, the dimensional standards of wire rod are as follows:
Diameter range: 5.5mm - 16mm
Allowable deviation: ±0.3mm of the diameter
Steel grade: mainly including HRB335, HRBF335, HRB400, HRBF400, HRB500, HRBF500 and HRB600