Steels Manufacture Building Material Construction from China on Hot Sale

Steels Manufacture Building Material Construction from China on Hot Sale System 1

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

Q:How much is the wall thickness standard of building 48?: According to the "construction of fastener type steel pipe scaffold safety technical specifications JGJ130-2011" stipulates that the specification of steel pipe should be Phi 48.3 * 3.6, that is, wall thickness is 3.6mm.

Q:What are the different grades of steel used in pipe manufacturing?: There are various grades of steel used in pipe manufacturing, including carbon steel, stainless steel, alloy steel, and high-strength low-alloy (HSLA) steel. Each grade has different characteristics and properties, making them suitable for specific applications and environments.

Q:What are the different standards for steel pipes?: There are several different standards for steel pipes that are used to ensure quality and compatibility in various applications. Some of the most commonly used standards include: 1. ASTM (American Society for Testing and Materials): ASTM standards are widely used in the United States and provide specifications for various types of steel pipes, including seamless and welded pipes. These standards cover dimensions, mechanical properties, and general requirements for steel pipes. 2. API (American Petroleum Institute): API standards are specifically designed for oil and gas industry applications. These standards provide guidelines for the manufacturing, testing, and inspection of steel pipes used in the oil and gas exploration, production, and transportation sectors. 3. DIN (Deutsches Institut für Normung): DIN standards are widely used in Europe and provide specifications for various steel pipe types, including seamless, welded, and cast iron pipes. These standards cover dimensions, materials, and technical delivery conditions for steel pipes used in various industries. 4. BS (British Standards): BS standards are widely used in the United Kingdom and cover specifications for steel pipes used in construction, engineering, and other applications. These standards provide guidelines for dimensions, materials, and manufacturing processes for steel pipes. 5. JIS (Japanese Industrial Standards): JIS standards are widely used in Japan and cover specifications for various steel pipe types, including seamless, welded, and cast iron pipes. These standards provide guidelines for dimensions, materials, and technical delivery conditions for steel pipes used in various industries. 6. ISO (International Organization for Standardization): ISO standards are recognized globally and provide specifications for steel pipes used in various industries. These standards cover dimensions, materials, testing, and quality control requirements for steel pipes. It is important to note that different industries and applications may have specific requirements, and therefore, it is essential to refer to the relevant standard for each specific use case. Adhering to these standards ensures the safety, reliability, and compatibility of steel pipes in their respective applications.

Q:How do you calculate the pipe flow velocity coefficient for steel pipes?: The Manning's equation is employed to determine the flow velocity in open channels and pipes, taking into consideration the hydraulic radius, slope, and roughness coefficient of the pipe. By applying this equation, the pipe flow velocity coefficient for steel pipes can be calculated. To ascertain the pipe flow velocity coefficient for steel pipes, the following steps should be followed: 1. Calculate the hydraulic radius (R) of the steel pipe by dividing the cross-sectional area (A) of the pipe by the wetted perimeter (P). The formula to use is R = A/P. 2. Determine the slope (S) of the pipe, which is the change in elevation divided by the length of the pipe. Usually, it is expressed as a ratio or a percentage. 3. Obtain the roughness coefficient (n) of the steel pipe, representing the internal roughness of the pipe. This information can be found in literature or pipe manufacturer specifications, often given in terms of the Manning's roughness coefficient. 4. Insert the values of hydraulic radius (R), slope (S), and roughness coefficient (n) into the Manning's equation: V = (1/n) * R^(2/3) * S^(1/2) where V signifies the flow velocity. 5. Solve the equation for V to calculate the pipe flow velocity coefficient for steel pipes. It is crucial to note that the calculated velocity coefficient may differ depending on specific pipe dimensions, flow conditions, and other factors. Therefore, it is advisable to consult relevant engineering standards or seek guidance from a hydraulic engineer to ensure accurate and reliable calculations for specific applications.

Q:How do steel pipes handle extreme temperatures?: Steel pipes are highly durable and can handle extreme temperatures due to their inherent strength and heat resistance. They have a high melting point, allowing them to withstand both very high and very low temperatures without compromising their structural integrity. Additionally, steel pipes have excellent thermal conductivity, which enables them to efficiently transfer heat and prevent damage caused by extreme temperature fluctuations.

Q:Can steel pipes be used for chemical storage tanks?: Steel pipes can be used for chemical storage tanks, but it depends on the specific application and the type of chemicals being stored. Steel is generally a strong and durable material, making it suitable for many industrial applications. However, certain chemicals can react with steel, causing corrosion and potentially compromising the integrity of the tank. In such cases, it is important to use corrosion-resistant coatings or linings on the steel pipes to protect against chemical reactions. Additionally, the design and construction of the tank should adhere to industry standards and regulations to ensure safe storage of chemicals. Therefore, while steel pipes can be used for chemical storage tanks, careful consideration must be given to the type of chemicals being stored and appropriate measures taken to prevent corrosion and ensure safety.

Q:What's the difference between a rectangular tube and a rectangular steel tube?: The classification of rectangular tube: steel pipe seamless steel pipe and welded steel pipe (tube) hot-rolled seamless tube, seamless tube, seamless tube, welded tube extrusion. The welded square pipe is divided into two parts:(a) according to the process of arc welding - resistance welding tube, square tube (high frequency and low frequency), welding square tube, welding square tube furnace (b) according to the weld - welded square tube, spiral welded pipe.

Q:How are steel pipes marked for identification?: Steel pipes are typically marked for identification using various methods such as color coding, stenciling, engraving, or applying tags with relevant information such as size, grade, manufacturer, and specifications.

Q:Can steel pipes be used for roller coaster tracks?: Yes, steel pipes can be used for roller coaster tracks. Steel is a commonly used material for roller coaster tracks due to its strength, durability, and ability to withstand intense forces and high speeds.

Q:How are steel pipes coated for insulation purposes?: Steel pipes are commonly coated for insulation purposes using various methods and materials. One common method is the application of a thermal insulation coating. This coating is usually a high-performance polymer or epoxy-based material that is applied to the surface of the steel pipe. Before the coating is applied, the steel pipe is usually cleaned thoroughly to remove any dirt, grease, or rust that may be present on its surface. This is typically done through a process called abrasive blasting, where small particles are propelled at high speed to remove contaminants and create a clean, rough surface for the coating to adhere to. Once the surface is prepared, the thermal insulation coating is applied using different techniques such as spraying, brushing, or rolling. The coating is carefully applied in multiple layers to ensure proper coverage and thickness. This helps to create a barrier between the steel pipe and the external environment, preventing heat transfer and minimizing energy loss. In addition to thermal insulation coatings, steel pipes can also be coated with materials such as polyurethane foam or mineral wool. These materials provide excellent thermal insulation properties and are often used in applications where high-temperature resistance is required. Overall, steel pipes are coated for insulation purposes through a combination of surface preparation and the application of specialized coatings. These coatings help to reduce heat loss, increase energy efficiency, and protect the steel pipe from corrosion and other environmental factors.

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