Steels Manufacture Building Material from China on Sale

Steels Manufacture Building Material from China on Sale System 1

Steels Manufacture Building Material from China 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 Manufacture Building Material from China on Sale

Q:What are the different methods of pipe threading for steel pipes?: The different methods of pipe threading for steel pipes include manual threading, machine threading, and electric threading. Manual threading involves using a handheld die or tap to create the threads on the pipe. Machine threading utilizes power-driven machines that can thread multiple pipes simultaneously, offering efficiency and accuracy. Electric threading is similar to machine threading, but it uses an electric motor to drive the threading process.

Q:How do you calculate the pipe pressure drop for steel pipes?: To determine the pressure drop in steel pipes, there are two equations that can be utilized: the Darcy-Weisbach equation and the Hazen-Williams equation. The Darcy-Weisbach equation, although more precise, necessitates a greater amount of information. It takes into consideration the diameter, length, roughness, fluid flow rate, as well as fluid properties like viscosity and density. The equation is expressed as: To calculate the pressure drop (ΔP), the following formula can be used: (f * L * ρ * V^2) / (2 * D) In this formula: - ΔP denotes the pressure drop - f represents the friction factor (which can be determined using Moody's chart or empirical equations such as the Colebrook-White equation) - L signifies the length of the pipe - ρ denotes the fluid density - V represents the fluid velocity - D signifies the pipe diameter On the other hand, the Hazen-Williams equation is a simplified version commonly employed for water flow calculations. Although less accurate, it is more user-friendly. The equation is expressed as: To calculate the pressure drop (ΔP), the following formula can be used: K * Q^1.85 / (C^1.85 * d^4.87) In this formula: - ΔP denotes the pressure drop - K signifies the Hazen-Williams coefficient (which relies on the pipe material and roughness) - Q represents the flow rate - C signifies the Hazen-Williams roughness coefficient - d denotes the pipe diameter It is crucial to note that these equations provide estimations of the pressure drop, and actual conditions may vary due to factors such as fittings, bends, and valves in the pipe system. Furthermore, consistency in unit usage (e.g., SI units or US customary units) is of utmost importance when employing these equations.

Q:How do steel pipes handle vibrations?: The effectiveness of handling vibrations is a well-known attribute of steel pipes. Their strong and rigid nature enables them to withstand various types of vibrations, including mechanical vibrations and seismic activities. The structural integrity and strength of steel pipes are responsible for their resilience. Steel pipes possess high tensile strength, which allows them to resist deformation or breakage when exposed to vibrations. They also exhibit resistance to fatigue, meaning they can endure repeated vibrations without suffering significant damage. This quality makes steel pipes ideal for applications involving constant or cyclic vibrations, such as in industrial settings or for fluid transportation through pipelines. Furthermore, steel pipes have the added advantage of being able to dampen vibrations due to their mass. The weight of the steel pipe aids in absorbing and dissipating the energy generated by vibrations, preventing excessive movement or oscillation. This damping effect contributes to the overall stability and durability of the pipe system. Various measures can be taken to further enhance the ability of steel pipes to handle vibrations. These measures may include the utilization of vibration isolators or dampers, which are devices designed to reduce the transmission of vibrations from the surrounding environment. Additionally, proper installation techniques and regular maintenance can help ensure that steel pipes continue to function optimally under conditions prone to vibrations. In conclusion, steel pipes possess the necessary attributes to effectively handle vibrations, including strength, resistance to fatigue, and the ability to dampen vibrations. Their robustness and durability make them a reliable choice for applications where vibrations are a concern, guaranteeing the safe and efficient transportation of fluids or materials.

Q:What are the different types of joints used with steel pipes?: There are several types of joints used with steel pipes, including threaded joints, welded joints, flanged joints, and grooved joints.

Q:Can steel pipes be used for gas transmission pipelines?: Yes, steel pipes can be used for gas transmission pipelines. Steel is a commonly used material for gas pipelines due to its strength, durability, and ability to withstand high pressure and extreme temperatures. It is resistant to corrosion and can effectively transport natural gas or other gases over long distances. Additionally, steel pipes can be welded together to create a continuous and leak-proof pipeline, ensuring the safe and efficient transmission of gas.

Q:How are steel pipes used in the construction of railways?: Steel pipes are used in the construction of railways for various purposes such as laying tracks, supporting structures, drainage systems, and carrying utilities like water and electrical cables. They provide strength, durability, and corrosion resistance, ensuring the smooth functioning and longevity of railway infrastructure.

Q:What are the different methods of welding steel pipes?: There are several methods of welding steel pipes, including arc welding, TIG (tungsten inert gas) welding, MIG (metal inert gas) welding, and oxy-fuel welding. Each method has its own advantages and applications, depending on factors such as the thickness of the steel, the desired strength of the weld, and the available equipment.

Q:How can two smooth steel pipes be joined? The size of the two pipe is different (except for welding): Fastener type steel pipe scaffold, fastener is the connection between steel pipe and steel pipe, and its form has three kinds, namely right angle fastener, rotating fastener, butt fastener

Q:Can steel pipes be used for oil transportation?: Yes, steel pipes are commonly used for oil transportation due to their high strength, durability, and resistance to corrosion.

Q:What are the different methods of wrapping steel pipes for corrosion protection?: There are several different methods of wrapping steel pipes for corrosion protection. These methods can vary depending on the specific application and environmental conditions. Some of the common methods include: 1. Tape Wrapping: This involves wrapping the steel pipes with a corrosion-resistant tape, such as polyethylene or polypropylene tape. The tape acts as a barrier between the pipe surface and the corrosive elements, preventing direct contact and reducing the risk of corrosion. 2. Inner Wrapping: Inner wrapping involves applying a protective coating or lining to the inside surface of the steel pipe. This method is commonly used for pipes that transport fluids or gases, as it provides an additional layer of protection against corrosion from the inside. 3. External Coating: External coating is a widely used method for corrosion protection. It involves applying a protective coating to the outside surface of the steel pipe. The coating can be a variety of materials, such as epoxy, polyethylene, or polyurethane, which provide a barrier against corrosive elements and extend the lifespan of the pipe. 4. Cathodic Protection: Cathodic protection is an electrochemical method used to protect steel pipes from corrosion. It involves connecting the steel pipe to a sacrificial anode, such as zinc or magnesium, which corrodes instead of the pipe. This process helps to prevent the corrosion of the steel pipe by diverting the corrosive current away from the pipe surface. 5. Heat Shrink Sleeve: Heat shrink sleeves are commonly used for corrosion protection in underground or submerged applications. These sleeves are made of a heat-activated material that shrinks when heated, creating a tight seal around the pipe. The sleeve forms an effective barrier against moisture and corrosive elements, preventing direct contact with the steel pipe. 6. Fusion Bonded Epoxy (FBE) Coating: FBE coating is a thermosetting powder coating that is applied to the surface of the steel pipe and then fused to form a protective layer. This coating provides excellent adhesion and corrosion resistance, making it a popular choice for steel pipes in various applications. It is important to note that the selection of the appropriate method for wrapping steel pipes for corrosion protection depends on factors such as the environment, the type of corrosive elements present, the intended application, and other specific requirements. Professional advice and consultation may be necessary to determine the most suitable method for a particular situation.

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