SPIRAL STEEL PIPE 52‘‘ ASTM API LARGE DIAMETER PIPE

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 3000 m.t./month

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Packaging & Delivery

Packaging Detail:	standard export packing or as customer's requirement
Delivery Detail:	within 10 - 30 days

Specifications

Spiral Welded Steel Pipes and Tubes
1.Material:Q195-Q235
2.Length:1-12m
3.WT:1.0-14mm
4.O.D.:20-273mm

Spiral Welded Steel Pipes and Tubes

Product Description:

1.Material : Q235,Q345,L245,L290,L360,L415,L450,L485,GrB,X42,46,X52,X56,X60,X65,X70,X80,X100

2,Standard: SY/T5037-2000,GB/T9711-2011,API Spec 5L PSL1/PSL2,ASTM A252\A53,ISO3183,DIN17172,EN10217,JIS G3457,AWWA C200,ASTM A139,ASTM A671,ASTM A672

3.Wall thickness: 3.0mm-30mm

4.Outer diameter: φ168mm-3020mm

5,Length: 5m-12m or as your requirement

6,Corrosion protection standard: DIN30670,DIN30671, AWWAC210, AWWA C203, SY/T0413-2002,SY/T0414-2002

7,Application: Oil, gas, natural gas, water pipe, thermal electricity pipe, steel structure engineering, etc

Q195-q345 Material Steel Pipe's Materials

Elements Material	Chemical Compsition%					Mechanical Property
	C%	Mn%	S%	P%	Si%	Yield Point (Mpa)	Tensile Strength(Mpa)	Elongation (%)
Q195	0.06-0.12	0.25-0.50	<0.050< span="">	<0.045< span="">	<0.030< span="">	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05< span="">	<0.045< span="">	<0.030< span="">	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045< span="">	<0.045< span="">	<0.030< span="">	>235	375-500	24-26
Q345	<0.20< span="">	1.0-1.6	<0.040< span="">	<0.040< span="">	<0.55< span="">	>345	470-630	21-22

Q:What are the different types of steel pipes available in the market?: There are several different types of steel pipes available in the market, each designed for specific purposes and applications. Some of the most common types include: 1. Carbon Steel Pipes: These are the most widely used type of steel pipes, known for their strength and durability. They are primarily used for transporting fluids and gases in various industries such as oil and gas, construction, and plumbing. 2. Alloy Steel Pipes: These pipes are made by combining different metals, such as chromium, nickel, or molybdenum, with carbon steel. Alloy steel pipes offer enhanced strength, corrosion resistance, and heat resistance. They are often used in high-pressure applications, such as in power plants and chemical plants. 3. Stainless Steel Pipes: Stainless steel pipes are highly resistant to corrosion and oxidation, making them suitable for applications where hygiene and durability are crucial. They are commonly used in industries like food processing, pharmaceuticals, and water treatment. 4. Galvanized Steel Pipes: These pipes are coated with a layer of zinc to protect them from rust and corrosion. Galvanized steel pipes are commonly used in plumbing systems and outdoor structures, such as fences and handrails. 5. Seamless Steel Pipes: Seamless pipes are produced without any welding or joints, resulting in a smooth and continuous surface. They are known for their high strength and are often used in high-pressure applications. 6. Welded Steel Pipes: Welded pipes are made by rolling or bending a flat steel plate into a cylindrical shape and then welding the edges together. They are commonly used in industries such as construction, oil and gas, and automotive. 7. ERW (Electric Resistance Welded) Steel Pipes: ERW pipes are made by passing a high-frequency electrical current through the steel strip, causing it to heat and form a weld. They are widely used in various applications, including plumbing, water wells, and structural support. 8. LSAW (Longitudinal Submerged Arc Welded) Steel Pipes: LSAW pipes are made by bending and welding steel plates into a cylindrical shape. They are commonly used for transporting large volumes of oil, gas, or water over long distances. These are just a few examples of the diverse range of steel pipes available in the market. The choice of the right type of steel pipe depends on factors such as the intended application, environmental conditions, and budget considerations. It is important to consult with experts or professionals to determine the most suitable type of steel pipe for a specific project or application.

Q:Can steel pipes be bent?: Yes, steel pipes can be bent. The process of bending steel pipes typically involves using specialized tools and techniques such as pipe bending machines or hydraulic presses. These tools apply force to the pipe, causing it to deform and take on the desired shape or angle. The ability to bend steel pipes makes them versatile and suitable for various applications, including plumbing, construction, and manufacturing. However, it's important to note that the degree to which a steel pipe can be bent depends on factors such as the pipe's diameter, wall thickness, and the type of steel used.

Q:How do steel pipes handle chemical exposure?: Steel pipes are renowned for their excellent ability to resist exposure to chemicals. The strength and durability of steel make it a dependable material for managing different types of chemicals. Steel pipes can endure contact with a diverse array of corrosive substances like acids, alkalis, solvents, and gases without undergoing significant degradation or damage. One of the primary factors contributing to the effectiveness of steel pipes in handling chemical exposure is their innate resistance to corrosion. Steel naturally resists corrosion and can create a protective oxide layer on its surface, which acts as a barrier against chemical attack. Additionally, steel pipes can be coated or lined with materials that have corrosion-resistant properties, such as epoxy, polyethylene, or cement, to offer additional defense against aggressive chemicals. Furthermore, steel pipes find widespread use in industrial settings where they encounter various chemicals. They are extensively employed in chemical plants, refineries, water treatment facilities, and other industries that require the transportation or storage of chemicals. Steel pipes can withstand the high pressures and temperatures associated with these processes while retaining their structural integrity and resistance to chemicals. However, it is important to acknowledge that the resistance of steel pipes to chemical exposure may vary depending on the specific type and concentration of the chemical. Certain highly corrosive substances may necessitate additional measures, such as specialized coatings or alloys, to ensure long-term protection. In conclusion, steel pipes are generally well-suited for managing chemical exposure due to their inherent resistance to corrosion, durability, and versatility. Their capability to endure a wide range of corrosive substances makes them a trustworthy choice for diverse industrial applications involving the transportation and storage of chemicals.

Q:Can steel pipes be used for underground drainage systems?: Yes, steel pipes can be used for underground drainage systems. Steel pipes are durable, strong, and resistant to corrosion, making them a suitable choice for underground applications. They can effectively handle the flow of water and withstand the pressure of soil and external elements. However, it is important to ensure proper insulation and anti-corrosion measures are in place to protect the steel pipes from potential damage caused by moisture and chemical reactions.

Q:What are the different coating options for steel pipes?: Steel pipes have numerous coating options to choose from, each serving a specific purpose and offering unique advantages. Some common coating options for steel pipes include: 1. Fusion Bonded Epoxy (FBE) Coating: FBE coating is widely used across industries due to its exceptional corrosion resistance, impact resistance, and adhesion to the pipe surface. This coating is typically applied through a heat-induced chemical reaction, resulting in a durable and protective layer. 2. Polyethylene (PE) Coating: PE coating is commonly employed for underground steel pipes as it provides superior resistance against corrosion, abrasion, and chemicals. It is applied using extrusion techniques, forming a seamless layer that prevents moisture penetration. 3. Polyurethane (PU) Coating: PU coating is renowned for its outstanding resistance to abrasion, chemicals, and harsh environmental conditions. It is frequently used for steel pipes exposed to extreme temperatures or aggressive environments. Multiple layers of PU coating can be applied to enhance protection. 4. Coal Tar Enamel (CTE) Coating: CTE coating is a traditional choice for steel pipes requiring protection against corrosion. It is a thick, black coating that effectively resists water, soil, and atmospheric corrosion. This coating is typically applied using a hot-applied method. 5. Zinc Coating: Zinc coating, also known as galvanization, is a widely used protective coating for steel pipes. It involves applying a layer of zinc to create a barrier against corrosion. Zinc coating can be applied through hot-dip galvanization or electro-galvanization techniques. 6. Concrete Coating: Concrete coating is often utilized for steel pipes in underground or submerged applications. It provides a robust protective layer against corrosion, abrasion, and mechanical damage. Concrete coating is typically applied as a cement mortar or reinforced concrete layer. These options represent just a few of the available coatings for steel pipes. The selection of a coating depends on factors such as the intended application, environmental conditions, and desired durability. Choosing the appropriate coating is crucial to ensure the longevity and performance of steel pipes in various industries.

Q:How are steel pipes used in power plants?: Steel pipes are extensively used in power plants for various applications. One of the primary uses of steel pipes in power plants is for transporting fluids and gases. These pipes are used to carry water, steam, and fuel (such as oil or gas) throughout the power plant. The high strength and durability of steel make it an ideal material for these pipes, as they can withstand high pressure and temperature conditions. Steel pipes are also used in power plant boilers. They form an integral part of the boiler system, where they carry hot gases and steam. These pipes are designed to withstand extreme heat and pressure, ensuring the safe and efficient operation of the boiler. Additionally, steel pipes are used in the cooling systems of power plants. Water is circulated through these pipes to cool down the equipment, such as turbines and condensers. The pipes are designed to withstand corrosion from the cooling water and maintain the required flow rate and pressure. Furthermore, steel pipes are used in the construction of power plant structures. They are used for the fabrication of support structures, such as frames, platforms, and walkways. Steel pipes provide excellent structural integrity and can withstand heavy loads, making them suitable for such applications. In summary, steel pipes play a vital role in power plants by transporting fluids and gases, serving as a part of the boiler system, facilitating cooling processes, and providing structural support. Their strength, durability, and resistance to extreme conditions make them an essential component in the operation of power plants.

Q:Are steel pipes resistant to UV radiation?: No, steel pipes are not inherently resistant to UV radiation. They can be affected by prolonged exposure to UV rays, leading to degradation and potential damage over time.

Q:Can steel pipes be used for sewage treatment plants?: Yes, steel pipes can be used for sewage treatment plants. Steel pipes are durable and resistant to corrosion, making them ideal for handling sewage and wastewater in such facilities. They are commonly used for conveying and distributing sewage, as well as for constructing various components like pipelines, pump stations, and treatment tanks. Additionally, steel pipes can withstand high pressure and are available in various sizes, making them suitable for the diverse needs of sewage treatment plants.

Q:What is the cost of steel pipes compared to other pipe materials?: The cost of steel pipes is typically higher compared to other pipe materials such as PVC or copper.

Q:Can steel pipes be used for transporting chemicals?: Yes, steel pipes can be used for transporting chemicals. Steel pipes are known for their strength, durability, and resistance to corrosion, making them suitable for handling various chemicals. Additionally, steel pipes can withstand high pressure and temperature conditions, ensuring safe transportation of chemicals.

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