Seamless pipe API,GB,ASTM,ASME,DIN high quality

Seamless pipe API,GB,ASTM,ASME,DIN high quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 5000 m.t./month

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1. Commodity Name: Seamless steel pipe

2. Standard: API,GB,ASTM,ASME,DIN

3. Quality grade: 10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.

4. Dimension:

OD: 1/2"-24"

WT: 2.5-80mm, SCH10~SCH40~XXL

length: 5.8m,6m,8m,9m,12m

5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn

6. application

carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.

7. Payment Terms: L/C D/A D/P T/T

8.packing and shipment

Packaged in bundles,as per customers' requirements, it can also bepackagesd as beveled ends, typed marking, black painting, plastic caps protection,woven bags packing

For 20" container the max length is 5.8m; For 40" container the max length is 12m. other options are available based on customer requests. Please discuss when placing orders.

9. Surface: painted with varnish;

10. Plastic caps at ends.

11. Tolerance: OD +1%/-1%

WT +12.5%/-10%

12. Chemical composition:

Models of Steel Pipes	Chemical Component
Steel 20 (ASTM A106B)	C	Si	Mn	P	S	Cu	Ni	Cr
Steel 20 (ASTM A106B)	0.17~0.24	0.17~0.37	0.35~0.65	0.035max	0.035max	0.25max	0.25max	0.25max
Steel45 (ASTM 1045)	0.42~0.50	0.17~0.37	0.50~0.80	0.035max	0.035max	0.25max	0.25max	0.25max
16Mn(Q345B)	0.12~0.20	0.20~0.55	1.20~1.60	0.035max	0.035max	0.25max	0.25max	0.25max
45Mn2 ( ASTM1345)	0.42~0.49	0.17~0.37	1.40~1.80	0.035max	0.035max	0.3max	0.3max	0.30max

Q: What are the different strategies for pipe laying using steel pipes?: There are several strategies for pipe laying using steel pipes, including open cut trenching, trenchless methods such as horizontal directional drilling (HDD), microtunneling, and pipe jacking. In open cut trenching, a trench is dug and the steel pipes are laid in the trench before it is backfilled. HDD involves drilling a small pilot hole underground and then pulling the steel pipes through the hole. Microtunneling uses a remote-controlled boring machine to excavate a tunnel and install the steel pipes simultaneously. Pipe jacking involves pushing the steel pipes into the ground using hydraulic jacks while excavating the soil in front of the pipes. Each strategy has its advantages depending on the specific project requirements and conditions.

Q: Can steel pipes be used for conveying abrasive materials?: Yes, steel pipes can be used for conveying abrasive materials. Steel pipes are known for their durability and resistance to wear, making them suitable for handling abrasive materials. Additionally, steel pipes can be lined with various protective coatings or linings to further enhance their resistance to abrasion and extend their lifespan.

Q: What are the common factors affecting the flow capacity of steel pipes?: There are several common factors that can affect the flow capacity of steel pipes. 1. Pipe Diameter: The diameter of the pipe is one of the most significant factors affecting flow capacity. The larger the diameter, the greater the flow capacity as there is more area for the fluid to pass through. 2. Pipe Length: The length of the pipe also plays a role in flow capacity. Longer pipes generally have higher frictional losses, which can reduce the flow capacity. 3. Surface Roughness: The internal surface roughness of the steel pipe can impact flow capacity. Rough surfaces create more friction, which can reduce the flow rate. Smooth pipes, on the other hand, allow for smoother flow and higher flow capacity. 4. Fluid Properties: The properties of the fluid being transported through the steel pipe can affect flow capacity. Factors such as viscosity, temperature, and density can impact the flow rate. For example, highly viscous fluids will have lower flow capacity compared to less viscous fluids. 5. Pressure Drop: Pressure drop along the length of the pipe is another factor that affects flow capacity. As fluid flows through the pipe, there may be pressure losses due to friction, bends, or restrictions. Higher pressure drops result in lower flow capacity. 6. Pipe Material and Wall Thickness: The material of the steel pipe and its wall thickness can influence flow capacity. Different materials have different properties that can affect flow rates. Additionally, thicker walls can reduce the internal diameter of the pipe, resulting in lower flow capacity. 7. Pipe Layout and Fittings: The design and layout of the pipe system, including the presence of fittings such as valves, elbows, and tees, can impact flow capacity. These fittings can cause additional pressure drops and turbulence, reducing the overall flow rate. It is important to consider these factors when designing or evaluating a steel pipe system to ensure optimal flow capacity and efficiency.

Q: Can steel pipes be used for oil well casing?: Yes, steel pipes can be used for oil well casing. Steel is a commonly used material for oil well casing due to its strength, durability, and resistance to corrosion.

Q: How are steel pipes used in the transportation of fluids?: Steel pipes are commonly used in the transportation of fluids due to their durability, strength, and corrosion resistance. They are used in various industries, including oil and gas, water supply, and chemical processing, to transport liquids and gases over long distances. The seamless construction of steel pipes ensures a smooth flow of fluids, reducing friction and pressure loss. Additionally, their ability to withstand high temperatures and pressures makes them ideal for transporting fluids safely and efficiently.

Q: How do steel pipes connect to other components?: Steel pipes can connect to other components through various methods such as welding, threading, flanges, or mechanical couplings.

Q: Can steel pipes be used for conveying oil?: Steel pipes are suitable for the transportation of oil. In the oil and gas industry, steel pipes are widely utilized for the conveyance of oil due to their robustness, longevity, and resistance to corrosion. The exceptional strength of steel pipes enables them to endure the demanding conditions of high pressure and temperature that often accompany oil transportation. Furthermore, steel pipes are less susceptible to leakage and damage in comparison to alternative materials, thus making them a dependable choice for the efficient transfer of oil over extensive distances. Moreover, the sleek interior surface of steel pipes aids in reducing friction and improving the oil flow. Overall, steel pipes are the preferred option for oil transportation owing to their superior mechanical properties and enduring performance.

Q: What is the role of steel pipes in the transportation of petroleum products?: Steel pipes play a crucial role in the transportation of petroleum products as they provide a safe and efficient means of transferring oil and gas over long distances. These pipes are strong, durable, and resistant to corrosion, ensuring the integrity of the pipelines and preventing leakage or contamination of the products. Additionally, steel pipes have high heat resistance, making them suitable for transporting hot petroleum products. Overall, steel pipes serve as the backbone of the petroleum transportation infrastructure, facilitating the smooth and reliable delivery of these essential energy resources.

Q: Are steel pipes suitable for food processing facilities?: Yes, steel pipes are suitable for food processing facilities. Steel is a durable and hygienic material that is resistant to corrosion, making it ideal for transporting food products and maintaining their quality and safety. Additionally, steel pipes are easy to clean and disinfect, further ensuring sanitation standards in food processing facilities.

Q: How are steel pipes protected against rust?: Steel pipes can be safeguarded against rust in various ways. One popular approach entails applying a protective coating to the pipes. This can be achieved through the use of a paint layer, epoxy, or a corrosion-resistant coating like zinc or galvanized coatings. These coatings act as a barrier between the steel and moisture, preventing rust formation. Another technique for shielding steel pipes from rust involves cathodic protection. This method employs sacrificial anodes, typically composed of zinc or magnesium, which are affixed to the steel pipes. These anodes corrode instead of the steel, sacrificing themselves and preventing rust on the pipes. In addition to coatings and cathodic protection, corrosion inhibitors can also be employed to protect steel pipes against rust. Corrosion inhibitors are chemicals that are added to the water or fluid flowing through the pipes. These chemicals generate a protective film on the steel's surface, inhibiting corrosion and preventing rust formation. Furthermore, regular maintenance and inspections play a vital role in safeguarding steel pipes against rust. Promptly addressing any signs of damage or wear on the protective coatings is crucial to prevent rust formation. Additionally, ensuring that the pipes are properly cleaned and dried before applying protective coatings can enhance their effectiveness. In summary, a combination of protective coatings, cathodic protection, corrosion inhibitors, and regular maintenance is utilized to effectively shield steel pipes against rust and corrosion. This approach prolongs their lifespan and maintains their structural integrity.

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