SPIRAL STEEL PIPE 48‘‘ 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: How are steel pipes used in the construction of geothermal power plants?: Steel pipes are used in the construction of geothermal power plants primarily for two purposes: transporting geothermal fluids and ensuring the structural integrity of the plant. The pipes are used to extract hot water or steam from the geothermal reservoir deep underground and transport it to the surface. These pipes are designed to withstand high temperatures and pressures associated with geothermal fluids. Additionally, steel pipes are also used to distribute the extracted fluids to various parts of the power plant for electricity generation. Moreover, steel pipes are utilized in the construction of the plant's infrastructure, such as the framework, supports, and other structural components, ensuring the overall stability and durability of the geothermal power plant.

Q: What is the difference between steel pipe and ductile iron pipe?: Steel pipe and ductile iron pipe are both commonly used in various industries for transporting fluids and gases. However, there are some key differences between the two materials. One of the main differences is their composition. Steel pipe is made primarily of iron and carbon, with other alloying elements added to enhance its strength and corrosion resistance. On the other hand, ductile iron pipe is a form of cast iron that has been treated to improve its ductility and toughness. It contains higher amounts of carbon and silicon, along with small amounts of other elements such as magnesium and copper. Another difference is their strength and durability. Steel pipe is known for its high strength and can withstand higher pressures and stresses compared to ductile iron pipe. It is also more resistant to impact and bending, making it suitable for applications where high strength is required. Ductile iron pipe, although not as strong as steel, still offers good strength and durability, especially in applications where there is a risk of external damage or heavy loads. Corrosion resistance is another factor to consider. Steel pipe is typically more resistant to corrosion due to the addition of alloying elements such as chromium and nickel. This makes it suitable for applications where there is a high risk of corrosion, such as pipelines carrying corrosive fluids. Ductile iron pipe, while also having some corrosion resistance, may require additional protective coatings to enhance its durability in corrosive environments. Installation and maintenance are also different for these two types of pipes. Steel pipe is generally lighter and easier to handle, making it easier to install. It can also be welded, which allows for more flexibility in the construction process. Ductile iron pipe, being a cast iron material, requires more specialized installation techniques, such as using mechanical joints or flanges. It is also more prone to cracking during installation if not handled properly. In terms of cost, steel pipe is generally more expensive than ductile iron pipe. This is due to the higher cost of raw materials and the additional processing required to produce steel pipe. However, it is important to consider the overall lifecycle cost, as steel pipe's higher strength and corrosion resistance may result in lower maintenance and replacement costs in the long run. In summary, while both steel pipe and ductile iron pipe have their own advantages and applications, the choice between the two depends on factors such as strength requirements, corrosion resistance, installation methods, and budget considerations. Careful consideration of these factors will help determine which pipe material is most suitable for a specific application.

Q: How are steel pipes used in the construction of dams?: Steel pipes are commonly used in the construction of dams for various purposes such as water diversion, drainage, and foundation reinforcement. They are used to transport water from one area to another, diverting it away from the construction site or controlling its flow within the dam. Steel pipes are also employed for drainage systems to prevent water accumulation and to ensure the stability of the dam structure. Additionally, they play a crucial role in reinforcing the foundation of the dam, providing strength and support to the overall structure.

Q: What is an electric welded pipe (EFW)? Seek help！: According to the operation requirements of the electric welding machine, connect the lead wire and set up the proper welding parameter of the electric welding machine, which can be operated by manual or automatic two input methods.After checking, start the electric welding machine and enter the welding process. When the welding time is reached, the machine will automatically enter the cooling state.When the pipe completely removed after cooling, electric fusion welding machine.Cutting the pipe with the cutting tool of plastic pipe or fine toothed saw with cutting guide device, and making its end face perpendicular to the axis of pipe. Remove the edges of the edges with a knife, scrape the weld area in the pipe or spigot end and clean the weld area.Should use the special fixture as far as possible to secure the components to be connected, and the roundness of the pipe shall not exceed 1.5% of the outer diameter of the pipe, or it should be corrected on the corresponding fixture.

Q: How are steel pipes used in the manufacturing of renewable energy systems?: Steel pipes are extensively used in the manufacturing of renewable energy systems for various purposes. They are commonly used as structural components, providing strength and stability to wind turbines, solar panel supports, and hydroelectric power systems. Steel pipes are also utilized for transporting fluids such as water, steam, or gases in energy generation processes. Furthermore, they are essential in the construction of geothermal energy systems, where they are employed to create underground heat exchangers and piping networks. Overall, steel pipes play a crucial role in the efficient and reliable functioning of renewable energy systems.

Q: How are steel pipes used in the wastewater treatment industry?: Steel pipes are commonly used in the wastewater treatment industry for various purposes, including the transportation of wastewater from one area to another, the distribution of treated water to different locations, and the construction of infrastructure such as pumping stations and treatment plants. Due to their durability, resistance to corrosion, and ability to withstand high pressure, steel pipes are essential components in the efficient and reliable operation of wastewater treatment systems.

Q: What is the hardness of steel pipes?: The hardness of steel pipes varies depending on the specific grade and manufacturing process used. However, steel pipes are generally known for their high hardness and durability, as they are often designed to withstand heavy loads, abrasive environments, and high-pressure conditions.

Q: What are low-pressure carbon steel tubes?: It's pressure levelThe design pressure (P) of pressure vessel is divided into four pressure levels: low voltage, medium pressure, high pressure and extra high pressure:(1) low voltage: Code L, 0.1MPa is less than or equal to p<1.6MPa(2) MP: Code M, 1.6MPa is less than or equal to p<10.0MPa(3) high voltage: Code H, 10.0MPa is less than or equal to p<100.0MPa(4) high voltage: Code U, P = 100.0MPa

Q: How are steel pipes used in the construction of biomass power plants?: Steel pipes are used in biomass power plants for various applications such as transporting biomass fuel, carrying water for steam generation, and distributing hot water or steam throughout the plant. They provide a sturdy and reliable infrastructure for the efficient functioning of the plant, ensuring the safe and effective operation of the biomass power generation process.

Q: What is the difference between internal threading and external threading of steel pipes?: The difference between internal threading and external threading of steel pipes lies in the location and method of threading. Internal threading refers to the process of creating threads on the inside surface of a steel pipe, allowing it to be connected to other components with external threads. On the other hand, external threading involves creating threads on the outside surface of a steel pipe, enabling it to be joined with components having internal threads. These two methods serve different purposes and are utilized depending on the specific requirements of the plumbing or assembly project.

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