round bibe and gb

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Supply Capability:: -

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Quick Details

Standard:BS, GB, API
Standard:BS 1387, GB 3087-1999, GB/T 8163-1999, GB/T 3087, API 5L
Grade:10#-45#, Q195-Q345
Grade:10#, 20#, 45#, Q235, Q345, Q195
Thickness:0.5 - 15 mm
Section Shape:Square
Place of Origin:Hebei, China (Mainland)
Secondary Or Not:Non-secondary
Application:Structure Pipe
Technique:ERW
Surface Treatment:Other

Packaging & Delivery

Packaging Details:	With bundles and load in containers or by bulk shipment.
Delivery Detail:	30-45 days according to the contract

Specifications

1.Size:15*15mm-400*400mm
2.W.T:0.5-12mm
3.Certification:ISO9001,CE
4.Standard:GB, ASTM.BS1387

galvanized steel pipe

1.ERW galvanized steel tubes
2.OD: 10.3-219mm
3.W.T:0.6-10mm
4.Certificate:ISO 9001-2008
5.Output per month:20000 tons

ERW galvanized steel tubes
O.D	O.D tolerance	W.T	Thickness Tolerance
19--219MM	±0.03	1.0--10MM	±0.03
Length	2--12M , according to customers' requirements
Zinc coating	275--350g/m2
International Standard	ISO 9001;2008
Standard	ASTM A 53 / BS 1387-1985
Material	Q195/Q215/Q235/Q345
Product Category :	Metallurgy, Mineral & Energy
Technique:	Welded
Packing	In bundles or according to customers' requirements
Usage	1.For low pressure liquid delivery such as water , gas and oil 2.For construction , e.g building greenhouse
Main market:	Middle east, Africa, North and South America, East and West Europe, South and southeast Asia,Australia
Place of Origin	China
HS code:	7306309000
Productivity	20000Ton/Month
Processing technology available:	Threading , coupling and with plastic caps protected
Remarks	1) Payment term : T/T 2) Trade Terms : FOB / CFR /CIF 3) Minimum quantity of order : 25 MT (25,000KGS) 4) Delivery period : 10 to 30 Days .

Q: What is the difference between steel pipes and PVC-M pipes?: Steel pipes are made of a strong and durable metal, while PVC-M pipes are made of a thermoplastic material known as polyvinyl chloride modified. The main difference lies in their composition and characteristics. Steel pipes are typically heavier and more robust, offering greater strength and resistance to high pressure and temperature. On the other hand, PVC-M pipes are lightweight, flexible, and corrosion-resistant, making them ideal for applications where chemical resistance and ease of installation are crucial factors.

Q: How do steel pipes handle water erosion?: Steel pipes are highly resistant to water erosion due to their inherent strength and durability. The smooth surface of steel pipes minimizes friction and turbulence, reducing the likelihood of erosion. Additionally, steel pipes can be coated with protective layers, such as galvanization or epoxy, that further enhance their resistance to water erosion.

Q: How do you calculate the flow rate through a steel pipe?: To calculate the flow rate through a steel pipe, you need to consider several factors. The most important ones are the diameter of the pipe, the pressure difference across the pipe, and the properties of the fluid flowing through it. Firstly, measure the inside diameter of the steel pipe accurately. This measurement is essential as it determines the cross-sectional area through which the fluid flows. The units for the diameter should be consistent with the units used for other measurements. Next, determine the pressure difference across the pipe. This can be done by measuring the pressure at two points along the pipe, typically at the inlet and outlet. The pressure measurements should be taken at the same height to avoid any discrepancies. The pressure difference is usually given in units of pressure (such as psi, kPa, or bar). Once you have the diameter and pressure difference, you can use the Bernoulli equation or the Darcy-Weisbach equation to calculate the flow rate. The Bernoulli equation relates the pressure difference to the velocity of the fluid. However, this equation assumes ideal conditions, neglecting factors such as friction losses, viscosity, and turbulence. The Darcy-Weisbach equation is more accurate and considers these factors. To use the Darcy-Weisbach equation, you need to know the properties of the fluid flowing through the pipe, such as its density and viscosity. These properties can be determined either through experimentation or by referring to literature values. Once you have all the necessary information, you can use the Darcy-Weisbach equation: Q = (π/4) * D^2 * √[(2 * ΔP) / (ρ * f * L)] Where: Q is the flow rate (in cubic meters per second or any other consistent units) D is the diameter of the pipe (in meters or any other consistent units) ΔP is the pressure difference across the pipe (in Pascals or any other consistent units) ρ is the density of the fluid flowing through the pipe (in kilograms per cubic meter or any other consistent units) f is the friction factor, which depends on the Reynolds number and the roughness of the pipe. L is the length of the pipe (in meters or any other consistent units) By plugging in the values for all the variables, you can calculate the flow rate through the steel pipe accurately.

Q: What are the different types of couplings used with steel pipes?: There are several types of couplings that can be used with steel pipes, including threaded couplings, compression couplings, and flanged couplings. Threaded couplings have threads on the inside and outside that allow pipes to be screwed together. Compression couplings use a compression fitting to connect pipes, providing a tight and secure connection. Flanged couplings have flanges on each end that are bolted together, creating a strong and durable joint.

Q: What are steel pipes?: Steel pipes are hollow cylindrical tubes made from steel, which are mainly used for transporting fluids and gases in various industries such as oil and gas, construction, and plumbing. They are known for their strength, durability, and resistance to corrosion, making them an essential component in infrastructure and industrial applications.

Q: How do steel pipes withstand high pressure and temperature?: The inherent properties and construction of steel pipes enable them to endure high pressure and temperature. Steel's strength and durability make it an ideal material for demanding applications. To begin with, steel pipes are crafted from top-notch steel alloys specifically engineered to withstand harsh conditions. These alloys are selected for their high tensile strength, enabling the pipes to withstand the internal pressure exerted by fluids or gases flowing through them. Often, steel used in these pipes is alloyed with elements like chromium, molybdenum, or nickel to enhance its resistance to corrosion and high temperatures. Furthermore, the construction of steel pipes plays a vital role in their ability to withstand high pressure and temperature. Typically, steel pipes are manufactured through seamless or welded processes. Seamless pipes are made by piercing a solid steel billet, resulting in a continuous and uniform pipe without any seams or joints. This seamless construction eradicates weak points and guarantees that the pipe can handle high pressure with no risk of leakage. On the other hand, welded pipes are created by joining two or more pieces of steel together using a welding process. The welds are meticulously inspected and tested to ensure their integrity and strength. Although welded pipes may have seams, they possess equal capability to endure high pressure and temperature when manufactured according to the appropriate standards. Additionally, steel pipes can be further fortified to enhance their resistance to pressure and temperature. For example, pipes used in extremely high-pressure applications may have increased thickness or additional layers of protective coatings. These measures bolster the strength and durability of the pipes, enabling them to withstand even higher pressures and temperatures. In conclusion, steel pipes can endure high pressure and temperature due to the robustness and longevity of the steel alloys used in their construction. The seamless or welded construction of these pipes eliminates weak points and guarantees their ability to handle extreme conditions. Additional reinforcement and protective coatings can be applied to further enhance their resistance to pressure and temperature.

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 advantages of using steel pipes in the manufacturing of furniture?: Using steel pipes in the manufacturing of furniture offers several advantages. Firstly, steel pipes are known for their strong and durable nature, providing furniture with the necessary strength and stability. Additionally, steel pipes have a high load-bearing capacity, making them suitable for supporting heavy furniture items. Furthermore, steel pipes are resistant to rust and corrosion, ensuring the longevity of the furniture. Lastly, steel pipes can be easily shaped and welded, allowing for versatile and customizable furniture designs.

Q: How are steel pipes protected against internal scaling?: Steel pipes are protected against internal scaling through various methods such as chemical treatments, use of corrosion inhibitors, and regular maintenance and cleaning procedures. These measures help to prevent the formation of scale, which can reduce the pipe's efficiency and lifespan.

Q: Can steel pipes be used for conveying liquids and gases?: Yes, steel pipes can be used for conveying both liquids and gases. They are commonly used in industries such as oil and gas, water supply, and sewage systems due to their durability, strength, and resistance to corrosion.

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