GALVANIZED STEEL STRAND

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1、STANDARDS

GB/T 1179

QB/HYT002

YB/T 5004

GB/T 3428

ASTMB802、 ASTMB803、 ASTMA855、 ASTMA925、 ASTMB957

2、MATERIAL

55#，60#，65#，70#，72A，80#，77B，82B

3、 PACKING

WOOD SPOOL Z2

4、

MECHANICAL PROPERTY OF EXTRA-HIGHTENSILE STEEL WIRE

(mm)Size		(mm) Tolerance	/Mpa Stress at 1% extension min	/Mpa Tensile strength min	*/% Elongation min	mm Wrapping test standard core dia.	Torsion test min / number of turns
＞	≤	(mm) Tolerance	/Mpa Stress at 1% extension min	/Mpa Tensile strength min	*/% Elongation min	mm Wrapping test standard core dia.	Torsion test min / number of turns
1.24	2.25	±0.03	1550	1870	2.0	4D	14
2.25	2.75	±0.04	1550	1870	2.0	4D	14
2.75	3.00	±0.05	1550	1870	2.5	5D	12
3.00	3.50	±0.05	1550	1870	2.5	5D	12
3.50	4.25	±0.06	1550	1870	2.5	5D	10
4.25	4.75	±0.06	1510	1870	2.5	5D	10
4.75	5.50	±0.07	1510	1870	2.5	5D	10

Minimun elongation is based on gauge length l0 = 250mm.

Torsion test is based on a standard length of 100 wire diameters.

Q: How is steel forgings heat-treated for improved mechanical properties?: Steel forgings are heat-treated through a process called quenching and tempering to enhance their mechanical properties. Initially, the steel is heated to a high temperature and then rapidly cooled, or quenched, in a liquid medium such as oil or water. This rapid cooling helps to achieve high hardness and strength in the material. Following quenching, the steel is tempered by reheating it to a lower temperature to relieve internal stresses and improve toughness while maintaining a desirable level of hardness. This heat treatment process is crucial in optimizing the mechanical properties of steel forgings, making them more durable and suitable for various applications.

Q: How is steel made and processed to create various steel products?: Steel is made through a process called the basic oxygen furnace (BOF) or the electric arc furnace (EAF). In the BOF method, iron ore is melted with scrap metal and limestone in a furnace, then oxygen is blown through the mixture to remove impurities. The resulting molten iron is mixed with alloying elements like carbon, manganese, and chromium to create different grades of steel. Alternatively, in the EAF method, recycled steel is melted using an electric arc. Once the steel is produced, it goes through various processing steps to create different steel products. These steps may include casting the molten steel into forms like slabs, billets, or blooms, which are then hot-rolled or cold-rolled into sheets, bars, or coils. Additional processes like tempering, annealing, galvanizing, or coating may be applied to enhance the steel's properties or protect it against corrosion. Finally, the steel products are cut, shaped, and finished to meet the specific requirements of industries such as construction, automotive, or manufacturing.

Q: What are the factors to consider when choosing the right steel product for a specific application?: When choosing the right steel product for a specific application, there are several factors to consider. These include the strength and durability required for the application, the corrosion resistance needed, the temperature and environmental conditions it will be exposed to, the desired appearance or finish, the cost, availability, and ease of fabrication of the steel product. Additionally, other factors such as weight, size, and compatibility with other materials in the application should also be taken into account.

Q: What are the different types of steel rods and their applications?: There are several types of steel rods available, each with its own unique properties and applications. Some common types include carbon steel rods, stainless steel rods, and alloy steel rods. Carbon steel rods are widely used in construction and manufacturing due to their high strength and durability. Stainless steel rods are resistant to corrosion and are often used in industries such as food processing and medical equipment manufacturing. Alloy steel rods, on the other hand, are designed to have specific mechanical properties such as increased hardness or improved heat resistance, making them suitable for applications in automotive and aerospace industries. Overall, the choice of steel rod depends on the specific requirements and environment of the application.

Q: What are the common uses of steel products in construction?: Steel products are commonly used in construction for a variety of purposes such as structural framing, reinforcement of concrete, roofing, cladding, and fabrication of beams, columns, and trusses. Additionally, steel is used in the construction of bridges, highways, and other infrastructure projects due to its strength, durability, and ability to withstand heavy loads and harsh environmental conditions.

Q: What are the different methods of joining steel components together?: There are several methods of joining steel components together. Some common methods include welding, bolting, riveting, adhesive bonding, and soldering. Welding involves melting and fusing the steel components together using heat, while bolting involves using bolts and nuts to secure the components. Riveting involves using rivets to join the components by deforming and clinching them. Adhesive bonding uses specialized adhesives to bond the components together, while soldering involves melting a filler metal to join the components. Each method has its advantages and limitations, depending on factors such as the application, strength requirements, and ease of disassembly.

Q: Can steel be recycled?: Yes, steel can be recycled.

Q: How does steel pipe threading for plumbing applications work?: Steel pipe threading for plumbing applications involves the process of cutting threads onto the ends of steel pipes to create a secure and leak-proof connection. This is typically done using a threading machine that rotates the pipe while a cutting die is applied to create the threads. The cutting die removes metal from the pipe, forming helical grooves, which align with the threads on fittings or other pipes. The threaded ends can then be joined together using pipe fittings or couplings, ensuring a tight and durable connection in plumbing systems.

Q: How is steel used in the production of laboratory equipment?: Steel is used in the production of laboratory equipment due to its durability, corrosion resistance, and high heat resistance. It is commonly used to manufacture items such as lab benches, cabinets, fume hoods, and various tools and instruments.

Q: What are the properties of alloy steel for high-temperature applications?: Alloy steel for high-temperature applications possesses several key properties. Firstly, it has excellent strength and toughness, allowing it to withstand high temperatures without deformation or failure. Additionally, it exhibits good corrosion resistance, preventing damage or degradation in harsh environments. Another important property is its ability to maintain hardness and dimensional stability under elevated temperatures. Moreover, alloy steel for high-temperature applications has good thermal conductivity, ensuring efficient heat transfer and distribution. Lastly, it often possesses high creep resistance, enabling it to withstand prolonged exposure to elevated temperatures without significant deformation.

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