• SPIRAL STEEL PIPE 42’‘46’‘48‘‘50’‘  LARGE DIAMETER PIPE System 1
SPIRAL STEEL PIPE 42’‘46’‘48‘‘50’‘  LARGE DIAMETER PIPE

SPIRAL STEEL PIPE 42’‘46’‘48‘‘50’‘ 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 measured and labeled?
Steel pipes are typically measured and labeled based on their diameter, wall thickness, and length. The diameter is measured in inches or millimeters, while the wall thickness is often expressed in inches or schedule numbers. The length is usually specified in feet or meters. Additionally, steel pipes may also bear labels indicating the type of steel used, industry standards compliance, and any specific certifications or markings required.
Q:Can steel pipes be recycled after their useful life?
Steel pipes can indeed be recycled once they have served their purpose. Steel, being an incredibly recyclable substance, can be recycled even in the form of pipes. The recycling of steel pipes entails the collection of used pipes, followed by thorough cleaning to eliminate any impurities, and finally transforming them into fresh steel products. This recycling process contributes to the preservation of natural resources, curbs energy usage, and limits waste generation. Moreover, recycling steel pipes aids in mitigating the environmental repercussions linked to the manufacturing of new steel.
Q:How do you transport and store steel pipes?
Transporting and storing steel pipes requires careful planning and adherence to safety guidelines. Here are the steps involved in transporting and storing steel pipes: 1. Determine the appropriate mode of transportation: Depending on the quantity and weight of the steel pipes, you can choose between transportation by truck, train, or ship. Evaluate the distance, logistics, and cost-effectiveness of each option before making a decision. 2. Package and secure the steel pipes: Proper packaging is crucial to prevent damage during transit. Bundle the pipes together using steel strapping or banding. Ensure that the bundles are secured tightly to prevent any shifting or movement during transportation. 3. Use appropriate lifting equipment: When loading and unloading the pipes, use suitable lifting equipment such as cranes, forklifts, or hoists. Ensure that the equipment is capable of handling the weight and length of the pipes safely. 4. Protect against moisture and corrosion: Steel pipes are susceptible to moisture and corrosion, which can weaken their structural integrity. Before transportation, apply a protective coating or wrap the pipes with waterproof materials. Additionally, consider using moisture-absorbing desiccants or placing the pipes on pallets to elevate them off the ground. 5. Plan for safe storage: If storing the steel pipes for an extended period, choose a dry and secure location. Ensure that the storage area is well-ventilated and free from direct exposure to sunlight, rain, or extreme temperatures. Use racks or pallets to keep the pipes off the ground and prevent contact with moisture. 6. Inspect for damage: Before transportation and after storage, conduct thorough inspections to identify any damage or signs of corrosion. This will help you address any issues promptly and ensure the integrity of the steel pipes. Remember to comply with local regulations and safety guidelines specific to your region when transporting and storing steel pipes. By following these steps, you can ensure the safe and efficient transportation and storage of steel pipes, minimizing the risk of damage and maintaining their quality.
Q:How are steel pipes protected against seismic activities?
Steel pipes can be protected against seismic activities through various measures such as using flexible joints, employing seismic bracing systems, and implementing proper installation techniques. Additionally, coating the pipes with corrosion-resistant materials and conducting regular inspections and maintenance can further enhance their protection against seismic events.
Q:How are steel pipes used in the manufacturing industry?
Steel pipes are used in the manufacturing industry for a wide range of applications, including the transportation of fluids and gases, structural support in buildings and infrastructure, and as a material for heat exchangers and boilers. They are also utilized in the production of various machinery and equipment, such as conveyors, cranes, and industrial piping systems. Overall, steel pipes play a crucial role in ensuring efficient and reliable operations across numerous manufacturing processes.
Q:How are steel pipes used in the aerospace industry?
Steel pipes are commonly used in the aerospace industry for various applications such as fuel lines, hydraulic systems, and structural components. These pipes provide strength, durability, and resistance to high pressure and extreme temperatures, making them ideal for delivering fluids and gases, supporting critical systems, and ensuring the structural integrity of aircraft and spacecraft.
Q:How are steel pipes tested for leakage?
Steel pipes are typically tested for leakage using various methods such as hydrostatic testing, ultrasonic testing, or dye penetrant testing. Hydrostatic testing involves pressurizing the pipe with water or another suitable liquid to a predetermined level and checking for any pressure drop over a specific period of time, indicating potential leakage. Ultrasonic testing utilizes high-frequency sound waves to detect any defects or cracks in the pipe wall that may cause leakage. Dye penetrant testing involves applying a colored liquid to the surface of the pipe, which seeps into any cracks or openings, making them easily visible under specific lighting, thus identifying potential leaks.
Q:What are the advantages of using stainless steel pipes?
There are several advantages of using stainless steel pipes. Firstly, stainless steel pipes have excellent corrosion resistance, making them suitable for various industries, including water supply, chemical processing, and oil and gas. Secondly, they have high strength and durability, allowing them to withstand extreme temperatures and pressure. Additionally, stainless steel pipes are hygienic and easy to clean, making them ideal for applications in the food and beverage industry. Lastly, they have a long lifespan and require minimal maintenance, resulting in cost savings in the long run.
Q:Can steel pipes be used for underground water treatment systems?
Yes, steel pipes can be used for underground water treatment systems. Steel pipes are known for their durability, strength, and resistance to corrosion, making them suitable for various applications, including underground water treatment systems. They can withstand the pressure and environmental conditions found underground, ensuring the safe and efficient transport of water within the treatment system. However, it is important to consider the water quality and potential for corrosion in the specific location when selecting the type of steel and implementing protective measures, such as coatings or cathodic protection, to prevent corrosion and ensure the longevity of the pipes.
Q:How are steel pipes used in agriculture?
Steel pipes are widely used in agriculture for various purposes. One common application is irrigation systems. Steel pipes can be used to transport water from a water source, such as a well or a reservoir, to different areas of a farm. These pipes are durable and can withstand the pressure of water, making them ideal for long-distance water transportation. Additionally, steel pipes are also used for drainage systems in agriculture. They can be used to remove excess water from fields, preventing waterlogging and ensuring proper drainage. Steel pipes are resistant to corrosion, which is important in agricultural settings where they may be exposed to moisture and various chemicals. Moreover, steel pipes are used in the construction of greenhouse structures. They provide structural support for the greenhouse framework and allow for the installation of irrigation systems and other equipment. Steel pipes are strong, sturdy, and can withstand harsh weather conditions, making them suitable for greenhouse construction. Furthermore, steel pipes are utilized in livestock farming. They are commonly used to create fences and enclosures for animals, providing a secure and durable barrier. Steel pipes are also used in the construction of animal shelters and barns. In summary, steel pipes play a crucial role in agriculture. They are used for irrigation systems, drainage systems, greenhouse construction, and livestock farming. Their durability, strength, and resistance to corrosion make them an excellent choice for various agricultural applications.

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