SPIRAL STEEL PIPE 16‘‘
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- China Main Port
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- TT OR LC
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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 | 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:
- Yes, steel pipes can be used for conveying solids. Steel pipes are commonly used in industries such as mining, construction, and agriculture to transport various solid materials, including ores, gravel, sand, and grains. The durability and strength of steel make it a suitable material for handling solid substances efficiently and ensuring their safe transportation.
- Q:
- Some limitations of using steel pipes include their susceptibility to corrosion and rust, which can affect their durability and lifespan. Steel pipes are also relatively heavy and can be challenging to transport and install compared to lighter materials. Additionally, steel pipes may require more extensive maintenance and repairs due to their vulnerability to cracks and leaks.
- Q:
- Inspecting steel pipes for defects involves a systematic approach that combines visual inspection, non-destructive testing (NDT) techniques, and specialized equipment. Here are the steps typically followed to inspect steel pipes for defects: 1. Visual Inspection: Start by visually examining the external surface of the pipe, looking for any visible signs of defects such as cracks, dents, or corrosion. Pay close attention to welds, joints, and areas susceptible to stress or damage. 2. Ultrasonic Testing (UT): Ultrasonic testing is commonly used to detect internal defects in steel pipes. It involves using ultrasonic waves that are sent into the pipe and then interpreted based on the echoes received. Any irregularities in the internal structure, like cracks or voids, can be identified and analyzed. 3. Magnetic Particle Inspection (MPI): MPI is a widely used technique to detect surface and near-surface defects such as cracks, seams, or other discontinuities. This method involves applying a magnetic field to the pipe and then applying ferromagnetic particles (usually iron-based) on the surface. These particles will accumulate and form visible indications at the areas of magnetic flux leakage caused by defects. 4. Eddy Current Testing (ECT): Eddy current testing is suitable for detecting surface and near-surface defects in conductive materials like steel. It involves inducing an alternating current into the pipe and monitoring the changes in the electrical currents induced by any defects present. These changes are then analyzed to identify and evaluate the defects. 5. Radiographic Testing (RT): Radiographic testing is performed by exposing the steel pipe to X-rays or gamma rays and capturing the resulting radiographic images. This technique allows for the detection of internal defects such as cracks, porosity, inclusions, or wall thickness variations. The radiographic images are then examined for any indications of defects. 6. Dye Penetrant Inspection (DPI): DPI is a method used to detect surface-breaking defects in steel pipes. It involves applying a liquid dye on the surface, which penetrates into any surface cracks or flaws. After allowing the dye to seep in and adequately react, excess dye is removed, and a developer is applied to draw out the dye from the defects, making them visible. 7. Pressure Testing: Pressure testing involves pressurizing the steel pipe to a predetermined level and monitoring for any pressure drops or leaks. This test ensures that the pipe can withstand the required pressure without any structural defects. It is important to note that the inspection technique used depends on various factors, such as the type of defect being sought, the size and nature of the pipe, and the specific industry standards and regulations. Inspection professionals with expertise in NDT methods and equipment are typically employed to ensure accurate and reliable results.
- Q:
- Steel pipes are typically stored in warehouses or open yards, stacked in an organized manner to prevent damage. They are often transported using trucks or railcars, secured with straps or clamps to ensure stability. For long-distance transportation, pipes may be bundled together or loaded onto flatbed trailers. Additionally, protective coatings are applied to prevent corrosion during storage and transportation.
- Q:
- Yes, steel pipes can be used for transporting gases. Steel pipes are known for their strength, durability, and resistance to corrosion, making them an ideal choice for transporting various gases over long distances. Additionally, steel pipes can handle high pressure and extreme temperatures, ensuring the safe and efficient transportation of gases.
- Q:What are the uses of seamless steel tubes?
- Compared withsteel and roundsteelinsolid, flexural torsional strength in the same time, the weight is light, is a kind of economic section steel, widely used in the manufacture of structural parts and mechanical parts, such as the oil pipe, automobile transmission shaft, the bicycle frame and steel construction with scaffold with steel pipe manufacturing ring parts can be improved the utilization rate of materials, simplify the manufacturing process, material saving and working hours, such as rolling bearing ring, Jack and so on, has been widely used in steel pipe manufacturing.
- Q:
- Indeed, sewage and wastewater can be conveyed using steel pipes. The use of steel pipes is widespread in sewage and wastewater systems owing to their robustness and resilience. They possess corrosion resistance and can endure immense pressure and flow rates. Moreover, steel pipes have the capability to manage the rigorous chemicals and pollutants found in sewage and wastewater without impairing or compromising the fluid quality. Nonetheless, it is crucial to guarantee proper coating or lining of the steel pipes to avert any potential problems concerning corrosion or contamination. Regular maintenance and inspections are equally important to detect and rectify any potential concerns that may arise within the system.
- Q:
- Steel pipes have the capability to be utilized in aboveground applications. Their strength, durability, and resistance to corrosion are well-known attributes, making them suitable for a variety of aboveground uses. Industries such as construction, oil and gas, water transportation, and infrastructure development often rely on steel pipes. Aboveground applications for steel pipes include structural supports, handrails, fencing, scaffolding, outdoor pipelines, and various other outdoor structures. Furthermore, steel pipes can undergo coating or painting processes to provide additional protection against weather conditions and enhance their aesthetic appearance. All in all, steel pipes offer versatility for aboveground applications due to their dependable nature and long-lasting performance.
- Q:
- Steel pipes are used in the manufacturing of geothermal systems primarily for their durability and heat resistance. These pipes are used to transport geothermal fluids, such as water or steam, from the underground reservoir to the surface, where they can be utilized for heating or electricity generation. The high strength and corrosion resistance of steel pipes make them ideal for withstanding the harsh conditions and high temperatures encountered in geothermal applications. Additionally, steel pipes can be easily welded and connected, allowing for efficient installation and maintenance of geothermal systems.
- Q:
- 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.
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