Steels China Manufacture Building Material Construction on Sale

Steels China Manufacture Building Material Construction on Sale System 1

Steels China Manufacture Building Material Construction on Sale

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t

Supply Capability:: 1000 m.t/month

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1.Packaging & Delivery

Packaging Detail:	in bundles or as customer's requirement
Delivery Detail:	Within 30days after receiving your deposit or copy of L/C

2.Specifications

HRB400,HRB500 Steel Rebars
1.China direct supplier
2.Best service
3.Competitive price
4.Quantity assured

3.Product Description

Name	High Tensile Export Reinforcing Steel Bar ,Deformed Steel Bar ,HRB400B,HRB,46B,HRB500 Building Construction Material
Standard	ASTM A615 /BS BS 4449 /GB HRB/ JIS G3112
Grade	A615 Gr40/60/75 BS 4449 Gr460,B500 GB HRB335,HRB400 ,HRB500 JIS G3112 SD390
Diameter	6mm-40mm
Length	6-12m
Technique	Low temperature hot-rolling reinforcing deformed steel rebar
Tolerance	As the standard or as your requirement
Application	Building, construction, road, bridge,etc
Certificated	BV
MOQ	500tons per size steel rebar
Packing details	Steel rebar packed in bundle or as your requirement
Delivery	Within 30 days after deposit
Payment	T/T or L/C

4.Chemical Composition

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
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥400		≥470		≥14

Grade	Technical data of the original chemical composition (%)
Grade	C	Mn	Si	S	P	V
HRB500	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045	0.04-0.12
	Physics capability
	≥500		≥630		≥12

5. Theorectical weight

Diameter (MM)	Cross Sectional Area (MM²⁾	Theorectical Weight (KG/M)	Weight of 12M Bar (KG)	A Ton Contains 12M Bars (PCS)
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	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

Steels China Manufacture Building Material Construction on Sale

Q:How do you measure the diameter of a steel pipe?: To measure the diameter of a steel pipe, you can use a caliper or a measuring tape. Place the caliper jaws or measuring tape around the widest part of the pipe, ensuring it is perpendicular to the pipe's axis. Take the reading displayed on the caliper or measure the distance between the two points on the measuring tape. This measurement will provide you with the diameter of the steel pipe.

Q:What are the different types of steel pipe supports for high-temperature applications?: Some different types of steel pipe supports for high-temperature applications include hangers, clamps, brackets, and anchors. These supports are designed to withstand the elevated temperatures and provide stability and proper alignment to the piping system.

Q:What is the importance of corrosion resistance in steel pipes?: Corrosion resistance in steel pipes is crucial as it helps prevent the deterioration of the pipes due to chemical reactions with substances in their surroundings. This resistance ensures the longevity and durability of the pipes, minimizing the risk of leaks, clogs, and structural failures. Additionally, it helps maintain the quality and safety of the transported fluids or gases, preventing contamination or degradation. Overall, corrosion resistance in steel pipes is essential for maintaining efficient and reliable infrastructure systems in various industries such as oil and gas, water supply, and construction.

Q:Can steel pipes be used for conveying steam?: Yes, steel pipes can be used for conveying steam. Steel pipes are commonly used in steam systems due to their high strength and durability, as well as their ability to withstand high temperature and pressure conditions. However, it is important to ensure that the steel pipes are properly insulated and the system is adequately designed to prevent any potential issues such as corrosion or thermal expansion.

Q:How do you calculate the pressure drop in a steel pipe?: When determining the pressure decrease in a steel pipe, various factors need to be taken into account. These factors include the pipe's diameter and length, the fluid's flow rate, and the fluid's properties. One commonly utilized equation for calculating the pressure drop in a pipe is the Darcy-Weisbach equation. This equation is as follows: ΔP = (f * (L / D) * (ρ * V^2)) / (2 * D) In this equation: - ΔP represents the pressure drop in the pipe - f denotes the Darcy friction factor, which relies on the pipe's roughness and Reynolds number - L refers to the pipe's length - D represents the pipe's diameter - ρ signifies the fluid's density - V indicates the fluid's velocity To compute the Darcy friction factor, different methods can be employed depending on the flow regime. For laminar flow, the formula f = 16 / Re can be utilized, where Re represents the Reynolds number. For turbulent flow, the friction factor can be determined using various methods, such as the Colebrook equation or the Moody chart. It should be noted that the fluid's properties, such as viscosity and density, may vary with temperature and pressure. Thus, considering these variations is crucial when calculating the pressure drop. Moreover, it is important to acknowledge that additional factors, including fittings, valves, and elbows, can impact the pressure drop in a steel pipe. These factors introduce extra losses, which can be accounted for by employing appropriate correction factors or directly measuring the pressure drop across these components. Overall, calculating the pressure drop in a steel pipe necessitates the use of suitable equations, taking into account the fluid's properties, and considering the various factors that can influence the flow. It is advisable to consult relevant engineering handbooks or employ specialized software for accurate calculations.

Q:Do steel pipes require maintenance?: Yes, steel pipes do require maintenance. While steel pipes are durable and long-lasting, they can still be subject to wear and tear over time. Regular maintenance is important to ensure their optimal performance and prolong their lifespan. One important aspect of maintenance is inspecting the pipes for any signs of damage or corrosion. Steel pipes can be vulnerable to rust and corrosion, especially in environments with high humidity or exposure to water. Regular inspections allow for early detection of any issues, which can prevent more significant damage and costly repairs in the future. Another aspect of maintenance is cleaning the pipes. Over time, steel pipes can accumulate debris, sediment, or mineral deposits. These build-ups can restrict the flow of fluids or affect the quality of the transported materials. Regular cleaning helps to remove these obstructions and maintain the efficiency of the pipes. Depending on the application, steel pipes may also require periodic lubrication or coating. This helps to reduce friction, prevent corrosion, and enhance the pipes' durability. Lubricants and coatings can be applied during maintenance to ensure the pipes continue to function smoothly and resist corrosion. Overall, regular maintenance of steel pipes is essential to maximize their performance, prevent damage, and prolong their lifespan. By investing time and effort in maintenance, potential issues can be identified and addressed early on, ultimately saving time and money in the long run.

Q:Are steel pipes suitable for nuclear power plants?: Yes, steel pipes are suitable for nuclear power plants. Steel pipes are commonly used in nuclear power plants due to their high strength, durability, and resistance to high temperatures and pressures. They are used for various applications such as transporting coolant, steam, and other fluids within the plant. Additionally, steel pipes can be fabricated to meet specific requirements and withstand the harsh operating conditions of nuclear power plants, making them a reliable and suitable choice for this industry.

Q:What are the factors to consider when selecting pipe materials for corrosive environments?: To ensure the longevity and effectiveness of a piping system in corrosive environments, several important factors must be considered. Firstly, the corrosion resistance of the pipe material is crucial. It is essential to select a material highly resistant to corrosion as time can cause significant damage to pipes in corrosive environments. Stainless steel, fiberglass, PVC, and CPVC are materials known for their excellent corrosion resistance. Secondly, the chemical compatibility of the pipe material with the corrosive environment should be assessed. Different materials have varying resistance levels to different chemicals, so it is important to ensure that the chosen material can withstand the specific chemicals present. Consulting chemical compatibility charts and seeking expert advice can aid in selecting the right material. Furthermore, the temperature and pressure requirements within the corrosive environment should be taken into account. Some materials have limitations in terms of temperature and pressure resistance, exceeding which can lead to pipe failure. It is crucial to choose a material that can handle the required temperature and pressure ranges without compromising its structural integrity. The cost of the pipe material and its installation should also be considered. While certain materials may offer high corrosion resistance, they may also be more expensive. Striking a balance between the desired level of corrosion resistance and the available budget is essential. Lastly, the maintenance requirements and overall durability of the pipe material should be evaluated. Some materials may require more frequent inspections, cleaning, or repairs compared to others. Considering the anticipated lifespan of the piping system and the ease of maintenance can help in selecting a material that ensures long-term reliability and cost-effectiveness. In conclusion, when selecting pipe materials for corrosive environments, it is important to consider factors such as corrosion resistance, chemical compatibility, temperature and pressure requirements, cost, and maintenance and durability. By carefully evaluating these factors, one can choose a pipe material that best suits the specific corrosive environment and ensures a reliable and long-lasting piping system.

Q:How do you protect steel pipes from rusting?: To protect steel pipes from rusting, several methods can be employed. One common approach is to apply a protective coating to the pipes. This can be done by using paint or other types of protective coatings designed specifically for metal surfaces. The coating acts as a barrier between the steel and the elements, preventing moisture and oxygen from coming into contact with the metal and causing rust. Another method is to galvanize the steel pipes. Galvanizing involves coating the pipes with a layer of zinc, which creates a protective barrier that prevents rust from forming. This process is commonly used for outdoor applications or in environments where the pipes are exposed to moisture. Regular maintenance is also crucial in protecting steel pipes from rusting. This includes inspecting the pipes for any signs of corrosion or damage and promptly addressing any issues that are found. Additionally, keeping the pipes clean and dry can help prevent rust formation. In some cases, installing sacrificial anodes can provide additional protection against rust. Sacrificial anodes are made of a more reactive metal, such as zinc or magnesium, and are attached to the steel pipes. These anodes corrode instead of the steel, sacrificing themselves to protect the pipes from rust. Lastly, proper storage and handling of steel pipes is essential. This means storing them in a dry, well-ventilated area, away from moisture and humidity. It is also important to handle the pipes with care to avoid any scratches or damage to the protective coatings. By employing these methods and practices, steel pipes can be effectively protected from rusting, ensuring their longevity and durability.

Q:Why should the weak electricity be pre buried with galvanized steel pipe?: Galvanized steel pipe with hot-dip galvanizing or galvanized coating on it. Galvanizing can increase the corrosion resistance and prolong the service life of the steel pipe. The use of galvanized pipe is very wide, except for water, gas, oil and other general low pressure fluid pipeline, is used in petroleum industry especially offshore oil well pipe and oil pipe, chemical coking equipment oil heater, cooler, oil pipe exchanger for coal distillation, and support piles, Zhanqiao mine tunnel the tubes.

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