SPIRAL STEEL PIPE 32’‘

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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:Are steel pipes suitable for use in nuclear power plants?: Yes, steel pipes are suitable for use in nuclear power plants. They are commonly used in various systems such as cooling, steam, and reactor coolant systems due to their high strength, durability, and resistance to corrosion. Additionally, steel pipes can withstand the high pressure and temperature conditions present in nuclear power plants, making them a reliable choice for this critical infrastructure.

Q:How are steel pipes used in the manufacturing of heat exchangers?: Steel pipes are commonly used in the manufacturing of heat exchangers due to their excellent heat transfer properties and durability. They are utilized as the main components for carrying and transferring hot or cold fluids within the heat exchanger system. The steel pipes ensure efficient heat exchange by providing a smooth and continuous flow of the fluid, while also withstanding high temperatures and pressures. Additionally, steel pipes are often preferred for their corrosion resistance, making them suitable for various industrial applications requiring reliable and long-lasting heat exchangers.

Q:How are steel pipes specified in engineering drawings?: Steel pipes are typically specified in engineering drawings by indicating their diameter, wall thickness, material grade, and length. Additional specifications may include the type of connection or joining method, surface finish requirements, and any specific standards or codes that need to be followed.

Q:Are steel pipes suitable for transporting chemicals?: Yes, steel pipes are suitable for transporting chemicals. Steel pipes have excellent strength and durability, making them capable of handling various corrosive chemicals and maintaining their structural integrity. Additionally, steel pipes can withstand high pressure and temperature, making them a reliable choice for chemical transportation.

Q:How are steel pipes protected from damage during transportation?: Various methods are used to protect steel pipes from damage during transportation. One commonly employed technique involves applying protective coatings to the pipes. Materials like epoxy, zinc, or polyethylene are often used for this purpose, creating a barrier between the pipe and external elements. These coatings effectively prevent corrosion and damage during transit. In addition, steel pipes are frequently bundled together and secured using straps or bands. This bundling ensures that the pipes remain in place and prevents any shifting or rolling during transportation. Furthermore, padding or cushioning materials, such as foam or rubber, may be utilized to provide extra protection and reduce the risk of damage from impact or vibration. Sometimes, steel pipes are placed in crates or containers to provide further safeguarding. Crates are designed to snugly fit the pipes, offering a secure enclosure that shields against external forces. On the other hand, containers create a protective environment for the pipes, shielding them from the elements and potential impacts. To guarantee the safe transportation of steel pipes, proper handling and loading techniques are crucial. Pipes should be lifted and loaded onto transport vehicles with care, utilizing suitable equipment like cranes or forklifts to minimize the risk of damage. It is also essential to properly secure the pipes within the transport vehicle to prevent any movement or potential damage during transit. Overall, a combination of protective coatings, bundling, padding, and secure packaging or loading techniques is employed to ensure the safety of steel pipes during transportation. These measures guarantee that the pipes arrive at their destination in optimal condition, ready for use in various applications.

Q:How are steel pipes used in the electronics industry?: Steel pipes are commonly used in the electronics industry for the transportation of various gases and liquids, such as coolant and process fluids, within electronic systems. They are also utilized for the construction of supporting structures and frameworks in electronic equipment and facilities.

Q:What are the advantages of using steel pipes in industrial plants?: There are several advantages of using steel pipes in industrial plants. Firstly, steel pipes are known for their exceptional strength and durability. They can withstand high temperatures, pressure, and heavy loads, making them ideal for transporting various materials and fluids within industrial facilities. Secondly, steel pipes have excellent resistance to corrosion. This is particularly important in industrial settings where the pipes come into contact with corrosive substances or are exposed to harsh environmental conditions. The corrosion resistance of steel pipes ensures their longevity and helps to prevent leaks, which can be costly and hazardous. Additionally, steel pipes offer a high level of versatility. They can be easily fabricated and customized to meet specific requirements, such as different sizes and shapes. This flexibility allows for easier installation and maintenance, reducing downtime and improving overall efficiency in industrial plants. Moreover, steel pipes have a smooth interior surface, which offers several advantages. It allows for efficient flow of materials, minimizing resistance and pressure drop. This smoothness also makes steel pipes less prone to accumulating deposits and contaminants, ensuring a clean and hygienic environment. Furthermore, steel pipes are highly resistant to fire. In industrial plants, where fires can have catastrophic consequences, the fire resistance of steel pipes provides an added layer of safety. Lastly, steel pipes are cost-effective in the long run. Although their initial installation cost may be higher compared to other materials, such as plastic or copper, their durability and low maintenance requirements result in significant cost savings over time. Steel pipes have a long lifespan, reducing the need for frequent replacements or repairs, and their resistance to corrosion and other damages also contributes to cost reduction. In conclusion, the advantages of using steel pipes in industrial plants include their strength, durability, corrosion resistance, versatility, efficient flow, fire resistance, and cost-effectiveness. These qualities make steel pipes a reliable and efficient choice for various applications within industrial facilities.

Q:How are steel pipes measured and specified?: Steel pipes are measured and specified using several key parameters. The most common ones include the outer diameter (OD), wall thickness, and length of the pipe. The outer diameter refers to the measurement of the pipe's outside surface from one end to the other. It is typically expressed in millimeters (mm) or inches (in), and it plays a critical role in determining the pipe's strength and carrying capacity. Different applications require different OD sizes, which can range from a few millimeters to several feet. The wall thickness of a steel pipe refers to the distance between its outer and inner surfaces. It is measured in millimeters or inches and is crucial for determining the pipe's durability and resistance to pressure. Thicker walls can handle higher pressure, making them suitable for applications that require transporting liquids or gases under high pressure. The length of steel pipes is generally specified in meters or feet. Standard pipe lengths are often 6 or 12 meters (20 or 40 feet), but custom lengths can be requested based on project requirements. It is important to note that longer pipes may require additional support to prevent sagging or structural issues. Apart from these primary measurements, steel pipes may also be specified based on other factors such as material grade, manufacturing standard, and surface finish. Material grade refers to the quality and composition of the steel used in the pipe, which determines its strength and corrosion resistance. Manufacturing standards, such as ASTM or API, ensure that the pipes meet specific quality and performance criteria. Surface finish specifications may include factors like galvanized coating, which provides protection against corrosion or other specific requirements based on the intended application. Overall, the measurement and specification of steel pipes involve considering the outer diameter, wall thickness, length, material grade, manufacturing standard, and surface finish. These parameters are crucial in determining the suitability of the pipe for various applications and ensuring its performance and durability in different environments.

Q:What are the different types of threading on steel pipes?: The different types of threading on steel pipes include tapered threads, straight threads, and buttress threads. Tapered threads are commonly used for pipes that will be screwed into fittings, while straight threads are typically used for pipes that will have a coupling or union attached. Buttress threads are designed for heavy-duty applications and provide increased strength and resistance to axial loads.

Q:What is the difference between hot-dip galvanizing and electroplating for steel pipes?: Hot-dip galvanizing and electroplating are two common methods used to provide corrosion protection for steel pipes, but there are key differences between the two processes. Hot-dip galvanizing involves immersing the steel pipes into a bath of molten zinc, which forms a metallurgical bond with the steel. This results in a thick and durable zinc coating that provides excellent corrosion resistance. The process of hot-dip galvanizing creates a uniform coating that covers the entire surface of the steel pipe, including both the external and internal surfaces. This makes hot-dip galvanizing particularly effective for protecting both the inside and outside of the pipes. On the other hand, electroplating is a process that involves the deposition of a thin layer of metal onto the surface of the steel pipes using an electric current. In the case of electroplating for steel pipes, typically a layer of zinc is applied. Unlike hot-dip galvanizing, electroplating does not provide a metallurgical bond between the zinc and the steel. Instead, it creates a mechanical bond, which is not as strong or durable as the bond formed through hot-dip galvanizing. The electroplated zinc layer is thinner compared to hot-dip galvanizing, which means it may not provide the same level of corrosion protection. Another difference between hot-dip galvanizing and electroplating is the application process. Hot-dip galvanizing requires immersing the steel pipes into a bath of molten zinc, which can be a time-consuming process. Electroplating, on the other hand, involves applying the zinc coating through an electrolytic cell, which can be faster and more efficient. In summary, the main difference between hot-dip galvanizing and electroplating for steel pipes lies in the thickness and durability of the coating, as well as the bonding mechanism between the zinc and the steel. Hot-dip galvanizing provides a thicker and more durable coating with a metallurgical bond, making it more effective for long-term corrosion protection. Electroplating, on the other hand, creates a thinner coating with a mechanical bond, which may be suitable for applications requiring a less robust level of corrosion resistance.

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