SPIRAL STEEL PIPE 32’‘ ASTM / ISO / API/ EN / DIN

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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	<0.045	<0.030	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05	<0.045	<0.030	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045	<0.045	<0.030	>235	375-500	24-26
Q345	<0.20	1.0-1.6	<0.040	<0.040	<0.55	>345	470-630	21-22

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

Q: How are steel pipes insulated to prevent heat gain?: Steel pipes are insulated to prevent heat gain by using materials with low thermal conductivity, such as fiberglass or mineral wool, which are wrapped around the pipes. This insulation layer acts as a barrier, reducing the transfer of heat from the surroundings to the pipes, thereby minimizing heat gain. Additionally, a vapor barrier may be applied over the insulation to prevent moisture ingress, which could further impact the insulation's effectiveness.

Q: Can steel pipes be used for underground sewage systems?: Yes, steel pipes can be used for underground sewage systems. Steel pipes are known for their durability and strength, making them suitable for underground applications. However, it is essential to ensure that the steel pipes are properly coated or protected against corrosion to prevent damage from sewage and soil conditions.

Q: Can steel pipes be used for underground geothermal systems?: Yes, steel pipes can be used for underground geothermal systems. Steel pipes are commonly used in geothermal systems due to their strength and durability. They can withstand the high temperatures and pressures associated with geothermal energy extraction and distribution. Steel pipes also have good corrosion resistance, which is important when dealing with the underground environment and the various minerals and chemicals present in the ground. Additionally, steel pipes are versatile and can be easily joined and installed underground, making them a suitable choice for geothermal systems.

Q: What are the different methods of bending steel pipes?: There are several methods of bending steel pipes, including hot bending, cold bending, mandrel bending, rotary draw bending, and induction bending.

Q: How do you calculate the deflection of a steel pipe?: To determine the deflection of a steel pipe, one must take into account various factors, including material properties, applied loads, and geometrical characteristics. The following steps can serve as a guide: 1. Material properties must be determined. This involves obtaining information about the steel pipe, such as its Young's modulus (E), which signifies its stiffness or resistance to deformation. Typically, this value is provided by the manufacturer or can be found in material databases. 2. The applied loads need to be analyzed. It is necessary to identify the types and magnitudes of the loads acting on the steel pipe. These loads can consist of point loads, distributed loads, or a combination of both. Additionally, the location and orientation of the applied loads must be determined. 3. The geometry of the pipe must be evaluated. The dimensions of the steel pipe, including its length (L), outer diameter (D), and wall thickness (t), should be measured or obtained. Accuracy in these values is crucial for precise calculations. 4. An appropriate calculation method should be selected. Depending on the complexity of the loading and support conditions, one may need to employ either simple beam theory or more advanced structural analysis methods, such as the finite element method (FEM). 5. The relevant equations must be applied. For simple beam theory, the Euler-Bernoulli beam equation can be utilized to calculate the deflection at a specific point on the pipe. This equation assumes the pipe is homogeneous, linearly elastic, and subjected to small deflections. In more complex scenarios, FEM software can handle the calculations. 6. Boundary conditions must be determined. The support conditions at both ends of the pipe, which can include fixed supports, simply supported ends, or combinations of both, need to be identified. These conditions significantly influence the deflection of the pipe. 7. The deflection can be calculated. By using the equations relevant to the chosen method and incorporating the material properties, applied loads, and geometry, one can calculate the deflection at specific points along the steel pipe. The deflection can be measured in terms of vertical displacement or angular rotation. It is important to note that calculating the deflection of a steel pipe may require specialized engineering knowledge and software tools. If one lacks experience in structural analysis, it is advisable to consult a professional engineer to ensure accurate results and safe design.

Q: How do you remove rust from steel pipes?: To remove rust from steel pipes, there are several methods you can try: 1. Use a wire brush or steel wool: Start by scrubbing the rusted areas with a wire brush or steel wool. This will help remove loose rust and flakes from the surface of the pipes. 2. Apply vinegar or lemon juice: Soak a cloth or sponge in white vinegar or lemon juice and apply it to the rusted areas. Let it sit for a few hours or overnight. The acidic properties of these substances can help dissolve the rust. 3. Use a rust remover or converter: There are various rust remover products available in the market. Follow the instructions on the product and apply it to the rusted areas. These solutions typically convert rust into a water-soluble compound that can be easily rinsed off. 4. Apply a paste of baking soda and water: Mix baking soda with water to create a thick paste. Apply the paste to the rusted areas and let it sit for a few hours. Scrub the area using a brush or steel wool, and then rinse it off. 5. Try using a commercial rust dissolver: If the above methods don't yield satisfactory results, you can consider using a commercial rust dissolver. These products are specifically designed to remove rust from various surfaces, including steel pipes. Follow the instructions provided by the manufacturer. Remember to wear protective gloves, goggles, and a mask when working with rust removal products, as they can be corrosive or release toxic fumes. Additionally, after removing rust, it is advisable to apply a rust-inhibiting primer or paint to prevent future rusting.

Q: What is the difference between steel pipe and aluminum pipe?: The main difference between steel pipe and aluminum pipe lies in their composition and physical properties. Steel pipes are primarily made of iron and carbon, with other elements added to enhance their strength and corrosion resistance. On the other hand, aluminum pipes are made entirely of aluminum, which is a lightweight and highly corrosion-resistant metal. One significant distinction between steel and aluminum pipes is their weight. Steel is a denser material compared to aluminum, meaning that steel pipes are generally heavier and sturdier. This characteristic makes steel pipes suitable for applications requiring higher structural strength and load-bearing capabilities. Aluminum pipes, on the other hand, offer distinct advantages due to their lightweight nature. They are around one-third the weight of steel pipes, making them easier to handle, transport, and install. This lightweight property also makes aluminum pipes more suitable for applications where weight reduction is crucial, such as in aerospace and automotive industries. Another crucial aspect to consider is corrosion resistance. Steel pipes are prone to rusting and corrosion, especially when exposed to moisture or corrosive environments. To combat this, steel pipes are often coated with protective layers or galvanized to enhance their resistance to corrosion. Aluminum pipes, on the other hand, have excellent natural corrosion resistance due to the formation of a thin layer of aluminum oxide on their surface. This oxide layer acts as a protective barrier, preventing further corrosion and degradation. Cost is another factor to consider when comparing steel and aluminum pipes. Steel pipes are generally more cost-effective compared to aluminum pipes, primarily due to the lower cost of raw materials and manufacturing processes involved. However, it is essential to consider the specific requirements and durability needed for the intended application, as the long-term maintenance costs and lifespan of steel and aluminum pipes may vary. In summary, the difference between steel and aluminum pipes can be summarized based on their weight, strength, corrosion resistance, and cost. Steel pipes are heavier, stronger, and more prone to rusting and corrosion but are generally more cost-effective. Aluminum pipes are lightweight, corrosion-resistant, and costlier but offer advantages in weight reduction and specific applications where corrosion resistance is crucial. Ultimately, the choice between steel and aluminum pipes depends on the specific needs of the project and the desired properties for optimal performance.

Q: How are steel pipes used in the manufacturing of agricultural machinery and equipment?: Steel pipes are widely used in the manufacturing of agricultural machinery and equipment due to their various beneficial properties. These pipes are utilized in several ways to enhance the efficiency and durability of agricultural machinery. One of the primary uses of steel pipes in agricultural machinery is for the construction of frames and chassis. The high strength and structural integrity of steel pipes make them ideal for supporting heavy loads and withstanding the rigorous conditions often encountered in agricultural operations. Whether it is a tractor, combine harvester, or tillage equipment, steel pipe frames provide the necessary stability and sturdiness required for these machines to perform efficiently in the field. Steel pipes are also commonly used in the hydraulic systems of agricultural machinery. These pipes serve as conduits for hydraulic fluids, allowing for the smooth and reliable operation of various components such as hydraulic cylinders, pumps, and motors. Due to their resistance to corrosion and high pressure, steel pipes ensure the longevity of hydraulic systems, reducing maintenance and repair costs for agricultural machinery. Furthermore, steel pipes find applications in the exhaust systems of agricultural equipment. The exhaust gases produced by engines need to be safely and efficiently expelled to minimize environmental impact and maintain engine performance. Steel pipes with appropriate thickness and thermal resistance are used to construct exhaust systems, allowing for the effective removal of exhaust gases and reducing noise pollution. In addition, steel pipes are utilized in the manufacturing of irrigation systems and equipment used in agriculture. Whether it is for transporting water from a source to the fields or distributing water to crops through sprinklers or drip irrigation, steel pipes offer the necessary durability and resistance to pressure, ensuring efficient water delivery and minimizing leaks. Overall, the use of steel pipes in the manufacturing of agricultural machinery and equipment is crucial for enhancing their performance, durability, and efficiency. The strength, structural integrity, resistance to corrosion, and high pressure capabilities of steel pipes make them indispensable components in various applications within the agricultural sector.

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