Steel pipe A335P9 18-26
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- Supply Capability:
- 200T m.t./month
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A335P9 Steel pipe The standing stock of specifications
A335P9 Steel pipe 70*4.5-5-6-7-8-9-10-12-15-16
A335P9 Steel pipe 245*8-10-14-17-20 -22-30-40
P5 C≤0.15 Mn 0.3-0.6 P ≤0.25 S≤0.25
Si 0.25-1.0 Cr 8-10 Mo 0.9-1.1
Alloy pipe is a steel pipe according to the production materials (i.e. material) to define, just as its name implies is made of alloy steel seamless pipe; and is in accordance with the production process (seamed seamless) to define, seamed pipe seamless pipe is different from, including straight seam welded pipe and spiral tube.
Manufacturing process
1 hot-rolled (extrusion seamless pipe): billet, heating, perforation, three roll cross rolling, rolling or extrusion, tube off, sizing pipe (or reducing), cooling, straightening, water pressure test (or testing), marking, storage
2 cold drawing (rolling) seamless steel pipe: billet, heating, perforation, heading, annealing, pickling, oiling round tube (copper) and multi pass drawing (Leng Zha), the blank pipe, heat treatment, straightening, water pressure test (testing), marking, storage
[(diameter - thickness) * wall thickness of]*0.02466=kg/ meters (per metre weight)
Alloy pipe use
Alloy pipe for low and medium pressure boiler (work pressure is generally not more than 5.88Mpa, the operating temperature at 450 DEG C) of the heating surface tube; used for high pressure boiler (work pressure is generally above 9.8Mpa, operate at a temperature of 450 DEG to 650 DEG C between) the heating surface tubes, economizer, superheater, reheater, petrochemical industry uses the tube and so on.
- Q: What is the difference between carbon steel pipes and stainless steel pipes?
- The main difference between carbon steel pipes and stainless steel pipes lies in their composition. Carbon steel pipes are primarily made of iron and carbon, while stainless steel pipes contain iron, carbon, and a minimum of 10.5% chromium. This chromium content in stainless steel pipes creates a protective layer of chromium oxide on the surface, making them highly resistant to corrosion. On the other hand, carbon steel pipes are more susceptible to corrosion and require additional coatings or treatments to prevent rusting. Additionally, stainless steel pipes offer better heat resistance and can withstand higher temperatures compared to carbon steel pipes.
- Q: Can steel pipes be used for the construction of offshore platforms?
- Yes, steel pipes can be used for the construction of offshore platforms. Steel pipes are commonly used in offshore construction due to their high strength, durability, and resistance to corrosion in harsh marine environments. They are suitable for various applications, including the fabrication of jacket legs, risers, pile sleeves, and other structural components necessary for offshore platform construction.
- Q: How to descaling galvanized steel pipe?
- If the substrate is rusty, rust removal can be removed by acid leaching. If the coating is rusted, it can also be dipped in acid, but this will also remove the coating and make the base material more susceptible to rust, preferably by re plating and passivation
- Q: How are steel pipes used in the construction of offshore oil rigs?
- Steel pipes are used in the construction of offshore oil rigs primarily for the transportation of oil and gas. These pipes are used to connect the wells drilled in the seabed to the surface facilities on the rig. They are also utilized for the circulation of drilling fluids, which help maintain stability and cool down the drilling equipment. Additionally, steel pipes are used to construct the rig's structural components like risers, conductors, and caissons, providing strength and support in the harsh offshore environment.
- Q: How are steel pipes coated to prevent corrosion?
- To prevent corrosion, steel pipes can be coated using different methods and materials. One common approach is to apply a protective layer of paint or epoxy on the pipe's surface. This coating acts as a barrier between the steel and the external environment, preventing direct contact with moisture and corrosive substances. Another technique involves galvanization, where the steel pipes are coated with a layer of zinc. Zinc is highly resistant to corrosion and acts as a sacrificial anode. In case of any damage to the coating, the zinc corrodes instead of the steel, ensuring the steel remains intact and free from corrosion. Polyethylene or polypropylene materials can also be fused onto the steel surface, creating a strong bond that provides excellent resistance against corrosion. This method, known as fusion bonding, is commonly used in offshore and underground pipelines. Moreover, a layer of corrosion-resistant alloy can be applied to the steel pipe. This alloy is typically a combination of metals such as nickel, chromium, and molybdenum, which offer superior protection against corrosion in harsh environments. The choice of coating method depends on factors like operating conditions, the presence of corrosive substances, and the expected lifespan of the steel pipes. By effectively applying these coatings, steel pipes can be safeguarded against corrosion, extending their durability and ensuring the integrity of the infrastructure they are used in.
- Q: How long is the seamless tube?
- Generally finished seamless steel tubes are less than twelve meters, mainly for the convenience of shipment.In times of rolling (processing), the steel pipe can reach 80 meters or longer.
- Q: How do steel pipes compare to other materials like PVC or copper?
- Steel pipes are known for their exceptional strength and durability, making them suitable for various applications. Compared to materials like PVC or copper, steel pipes offer higher resistance to corrosion, fire, and extreme temperatures. They also have a longer lifespan and can withstand high pressure and heavy loads. However, steel pipes are generally more expensive and require regular maintenance to prevent rusting. PVC pipes, on the other hand, are more affordable, lightweight, and easy to install, but they are less durable and have lower temperature resistance. Copper pipes are known for their excellent heat conductivity and resistance to corrosion, but they are more expensive and can be prone to theft. Ultimately, the choice between steel, PVC, or copper pipes depends on the specific requirements of the project and the budget.
- Q: Can steel pipes be used for underground pressure pipelines?
- Yes, steel pipes can be used for underground pressure pipelines. Steel pipes are known for their strength and durability, making them suitable for various applications, including underground pressure pipelines. They can withstand high pressure and are resistant to corrosion, making them a reliable choice for transporting fluids or gases underground. Additionally, steel pipes are available in different sizes and thicknesses, allowing for customization based on the specific requirements of the pipeline project. However, it is important to ensure proper coating or lining of the steel pipes to prevent corrosion caused by soil conditions or the transported substance. Regular maintenance and inspections are also necessary to ensure the integrity and longevity of the underground pressure pipelines made of steel pipes.
- Q: What are the different types of steel pipe joints?
- There are several different types of steel pipe joints, including threaded, welded, flanged, grooved, and compression joints.
- Q: How are steel pipes classified based on their thickness?
- There are three main categories for classifying steel pipes based on their thickness: Schedule, Nominal Pipe Size (NPS), and Wall Thickness. In North America, the Schedule classification is commonly used and refers to the pipe's wall thickness. It is indicated by numbers like Schedule 10, Schedule 40, and Schedule 80, where a higher number means a thicker pipe. On the other hand, the Nominal Pipe Size (NPS) classification is used internationally and refers to the pipe's inside diameter. It is expressed in inches and is usually followed by a schedule number to indicate the wall thickness. For example, NPS 6 Schedule 40 means a pipe with a 6-inch inside diameter and a wall thickness according to Schedule 40. Additionally, steel pipes can be classified based on their wall thickness in millimeters or inches. This classification provides a more precise measurement of the pipe's thickness and is commonly referred to as the "wall thickness" or "wt" in specifications. The wall thickness is measured from the outside diameter to the inside diameter and can be expressed in various units of measurement like millimeters, inches, or gauge. In summary, steel pipes are classified based on their thickness using different systems such as Schedule, Nominal Pipe Size (NPS), and Wall Thickness. These classifications ensure the selection of the appropriate pipe for specific applications, taking into account factors such as pressure requirements, structural integrity, and compatibility with other system components.
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Steel pipe A335P9 18-26
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 200T m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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