SPIRAL WELDED STEEL PIPE 24'' 26'' 28'' 30'' 32'' 36'' CARBON

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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

Packaging & Delivery

Packaging Detail:	Normal exporting packing,in container or bulk vessel or as per clients' request
Delivery Detail:	2 months after confimed contract

Specifications

Large Diameter API 5L X70 PSL2 LSAW Steel Pipe
Grade: X42, X46, X50, X52, X60, B, C
OD: 1.5"-28"
WT: SCH10-SCH160
Brand:TPCO

Large Diameter API 5L X70 PSL2 LSAW Steel Pipe

Specifications:

u Standard: API 5L

u Grade: B, C, X42, X46, X50, X52, X56, X60, X65, X70, X80

u OD: 1.5"-28"

u WT: SCH10-SCH160

u Length: 5-12m

u Ends Finish: plain end, bevel end, grooved end

u Surface Treatment: bare, black varnished, oiled finish, red color, anti-corrosion, 3PE, FBE or epoxy coating

u Technique: hot rolled or cold drawn

u Application: api 5l steel pipe for conveying oil, water, gas

u Invoicing: based on theoretical weight or actual weight

u Payment Terms: L/C at sight, T/T or Western Union

u Trade Terms: FOB, CFR, CIF

u Certification: ABS manufacturing assessment, ABS design assessment, API 5CT, API 5L, DNV manufacturer certificate, ISO9001 quality management system certificate, ISO14001 environment management system certificate, GB/T28001 occupational health and safety management system certificate, A1 class manufacturing license of special equipment certificate, CCS, GL, LR, SGS, TüV, PDE

Q:What are the advantages of using steel pipes in the manufacturing of storage tanks?: There are several advantages of using steel pipes in the manufacturing of storage tanks. Firstly, steel pipes are known for their strength and durability, making them suitable for holding large volumes of liquids or gases. They can withstand high pressure and extreme weather conditions, ensuring the longevity of the storage tank. Additionally, steel pipes are resistant to corrosion, which is crucial for preventing leaks or contamination of the stored materials. Moreover, steel pipes can be easily welded, allowing for efficient and precise construction of storage tanks. Finally, steel pipes have a high recyclability rate, making them an environmentally friendly choice for storage tank manufacturing.

Q:How are steel pipes threaded for connection?: Steel pipes are threaded for connection using a process called threading, which involves cutting helical grooves into the pipe's surface. This is typically done using a machine called a pipe threading machine, which rotates the pipe while a cutting tool is held against it, creating the desired threading pattern. The threaded ends of the pipes can then be connected using fittings or couplings to create a secure and leak-proof joint.

Q:What is the abrasion resistance of steel pipes?: The abrasion resistance of steel pipes is high due to their hardness and durability, making them resistant to wear and tear caused by friction or rubbing against surfaces.

Q:What is the role of steel pipes in the mining and extraction of minerals?: The mining and extraction of minerals heavily rely on steel pipes, which have a vital role to play. These pipes are extensively utilized in diverse mining operations for the transportation of fluids like water and slurry. Moreover, they are employed to offer structural reinforcement and ventilation within underground mines. A fundamental application of steel pipes in mining is the transportation of water and slurry. Water is an essential component in the mining process, serving purposes such as dust suppression, ore processing, and site rehabilitation. The creation of a pipeline network using steel pipes enables the efficient transfer of water from its source, such as a reservoir or dam, to various areas within the mine. Similarly, slurry, a mixture of crushed minerals and water, is frequently conveyed through steel pipes to processing plants or tailings dams. Structural support is another critical function fulfilled by steel pipes in underground mines. The extraction of valuable mineral deposits necessitates the construction of tunnels and shafts. To endure the immense pressure exerted by the surrounding rock and prevent collapses, these underground excavations require reinforcement. Steel pipes, acting as support structures like roof bolts and rock bolts, strengthen the walls and roofs of these tunnels and shafts, thereby ensuring miner safety and maintaining the stability of the mine structure. Furthermore, steel pipes are employed in ventilation systems within underground mines. Proper ventilation is vital for mining operations, ensuring a continuous supply of fresh air, removal of harmful gases, and control of temperature and humidity levels. Steel pipes are utilized to create ventilation shafts and ducts, facilitating the smooth flow of air throughout the mine. This aids in preventing the accumulation of toxic gases, dust, and excessive heat, thereby maintaining a safe and healthy working environment for miners. To summarize, steel pipes are indispensable for the mining and extraction of minerals. They facilitate the transportation of fluids, offer structural reinforcement in underground mines, and contribute to efficient ventilation systems. The absence of steel pipes would significantly impede the efficient and safe extraction of minerals from mines.

Q:How do steel pipes handle vibrations?: The effectiveness of handling vibrations is a well-known attribute of steel pipes. Their strong and rigid nature enables them to withstand various types of vibrations, including mechanical vibrations and seismic activities. The structural integrity and strength of steel pipes are responsible for their resilience. Steel pipes possess high tensile strength, which allows them to resist deformation or breakage when exposed to vibrations. They also exhibit resistance to fatigue, meaning they can endure repeated vibrations without suffering significant damage. This quality makes steel pipes ideal for applications involving constant or cyclic vibrations, such as in industrial settings or for fluid transportation through pipelines. Furthermore, steel pipes have the added advantage of being able to dampen vibrations due to their mass. The weight of the steel pipe aids in absorbing and dissipating the energy generated by vibrations, preventing excessive movement or oscillation. This damping effect contributes to the overall stability and durability of the pipe system. Various measures can be taken to further enhance the ability of steel pipes to handle vibrations. These measures may include the utilization of vibration isolators or dampers, which are devices designed to reduce the transmission of vibrations from the surrounding environment. Additionally, proper installation techniques and regular maintenance can help ensure that steel pipes continue to function optimally under conditions prone to vibrations. In conclusion, steel pipes possess the necessary attributes to effectively handle vibrations, including strength, resistance to fatigue, and the ability to dampen vibrations. Their robustness and durability make them a reliable choice for applications where vibrations are a concern, guaranteeing the safe and efficient transportation of fluids or materials.

Q:What's the actual size of the DN25?: Steel pipe is not only used to transport fluid and powder solid, exchange heat energy, and manufacture mechanical parts and containers, but also is an economic steel. It can reduce weight and save 20 to 40% of metal by using steel pipe to make building structure, network frame, prop and mechanical support. Moreover, it can realize factory mechanization construction. Using steel pipe to manufacture road bridge can not only save steel, simplify construction, but also greatly reduce the area of coating protective layer, save investment and maintenance cost.

Q:Can steel pipes be used for underground heat exchange systems?: Yes, steel pipes can be used for underground heat exchange systems. Steel pipes are commonly used for this purpose due to their durability and resistance to corrosion. They can effectively transport and exchange heat in underground systems, making them a suitable choice for such applications.

Q:What are the different types of steel pipe flanges?: There are several different types of steel pipe flanges, including slip-on flanges, weld neck flanges, socket weld flanges, threaded flanges, blind flanges, lap joint flanges, and orifice flanges. Each type has its own unique design and purpose, catering to specific applications and requirements in various industries.

Q:How are steel pipes used in the manufacturing of oil refineries?: Steel pipes are essential in the manufacturing of oil refineries as they are used for various purposes such as transporting crude oil, petroleum products, and other fluids throughout the facility. These pipes are used for the construction of pipelines, storage tanks, and various process equipment within the refinery. They provide a reliable and durable means of conveying and distributing fluids necessary for the refining process, ensuring efficient operations and the safe transportation of oil and its byproducts.

Q:What are the different methods of pipe inspection for steel pipes?: There are several methods of pipe inspection that can be used for steel pipes. Some of the commonly used methods are as follows: 1. Visual Inspection: This is the most basic form of pipe inspection where a trained inspector visually examines the exterior and interior of the pipe to identify any visible defects or abnormalities. This method is often used as a preliminary inspection before more advanced techniques are employed. 2. Magnetic Particle Inspection (MPI): MPI involves applying a magnetic field to the steel pipe and then applying iron particles to the surface. Any surface cracks or defects in the pipe will cause a leakage of magnetic flux, which can be detected by the inspector. This method is particularly effective in identifying surface defects in ferromagnetic materials. 3. Ultrasonic Testing (UT): UT is a non-destructive testing method that uses high-frequency sound waves to detect internal defects or anomalies in steel pipes. A transducer is used to send ultrasonic waves into the pipe, and the reflections or echoes of the sound waves are analyzed to determine the presence of defects such as corrosion, cracks, or wall thickness variations. 4. Radiographic Testing (RT): In this method, X-rays or gamma rays are used to create an image of the internal structure of the steel pipe. The X-rays or gamma rays pass through the pipe, and the resulting image can reveal any defects, such as cracks, corrosion, or weld discontinuities. This method is commonly used for inspecting welded joints. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing technique that uses electromagnetic induction to detect surface and near-surface defects in steel pipes. A coil carrying an alternating current is passed over the pipe's surface, and any changes in the electrical conductivity or magnetic field caused by defects are detected and analyzed. 6. Acoustic Emission Testing (AET): AET is a method that detects and analyzes the high-frequency acoustic signals emitted by materials when they undergo deformation or damage. In the case of steel pipes, AET can be used to monitor and identify defects such as cracks, leaks, or corrosion by analyzing the acoustic signals emitted during service or under stress. These are just a few of the commonly used methods of pipe inspection for steel pipes. The choice of method depends on various factors such as the type of defect being looked for, the accessibility of the pipe, the desired level of sensitivity, and the cost and time constraints. It is often recommended to use a combination of inspection techniques to ensure a thorough assessment of the steel pipes.

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