• Steel pipe A335P9 1-18 System 1
  • Steel pipe A335P9 1-18 System 2
  • Steel pipe A335P9 1-18 System 3
Steel pipe A335P9 1-18

Steel pipe A335P9 1-18

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Loading Port:
China Main Port
Payment Terms:
TT OR LC
Min Order Qty:
-
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 role of steel pipes in the construction of stadiums?
Steel pipes play a crucial role in the construction of stadiums as they are used for various purposes such as structural support, drainage systems, and the distribution of utilities like water and electricity. These pipes provide a sturdy and durable framework, allowing for the construction of large and complex structures. They also facilitate efficient and reliable management of essential services, ensuring the smooth operation of stadiums during events.
Q: Can steel pipes be used for transporting sewage?
Yes, steel pipes can be used for transporting sewage. Steel pipes are strong, durable, and resistant to corrosion, making them suitable for sewage transportation systems.
Q: How are steel pipes used in LNG terminals?
Steel pipes are used in LNG terminals for various purposes, including the transportation and storage of liquefied natural gas. These pipes are responsible for conveying the LNG from the storage tanks to the regasification units, where it is converted back into its gaseous state for distribution. Steel pipes are preferred for this application due to their strength, durability, and ability to withstand extreme temperatures and pressures. Additionally, these pipes are used for the safe transfer of other fluids and gases within the LNG terminal infrastructure.
Q: How are steel pipes inspected for defects?
Steel pipes are inspected for defects using various methods, including visual inspection, ultrasonic testing, magnetic particle inspection, dye penetrant testing, and radiographic examination. These techniques help identify any cracks, corrosion, or other defects in the pipes to ensure their structural integrity and prevent any potential hazards or failures.
Q: What is the difference between steel pipes and copper pipes?
The main difference between steel pipes and copper pipes lies in their material composition. Steel pipes are made of iron and carbon, while copper pipes are composed of copper metal. Additionally, steel pipes are generally more durable and can withstand higher pressure and temperature levels, making them suitable for industrial applications. On the other hand, copper pipes are more malleable and easily bent, making them ideal for residential plumbing systems. Moreover, copper pipes have better corrosion resistance compared to steel pipes, which may require coatings or treatments to prevent rusting.
Q: How can galvanized steel pipe be connected with stainless steel pipe?
The method of non direct fusion is adopted, such as blue, silk head and movable joint
Q: What are the common methods for cleaning the inner surface of steel pipes?
There are several common methods for cleaning the inner surface of steel pipes. Some of the most widely used methods include: 1. Mechanical Cleaning: This method involves the use of mechanical tools such as wire brushes, scrapers, or abrasive pads to physically remove debris, rust, or scale from the inner surface of the steel pipe. This method is effective for removing loose or loosely adhered contaminants. 2. Chemical Cleaning: Chemical cleaning involves the use of acidic or alkaline solutions to dissolve or loosen stubborn deposits, rust, or scale on the inner surface of steel pipes. The solution is usually circulated through the pipe for a specific period of time, allowing the chemical to react and break down the contaminants. This method is often used when mechanical cleaning is not sufficient. 3. High-Pressure Water Jetting: In this method, high-pressure water is directed through a nozzle into the steel pipe, effectively removing debris, rust, or scale from the inner surface. The force of the water jet helps dislodge and flush out the contaminants. This method is particularly efficient for cleaning pipes with complex geometries or hard-to-reach areas. 4. Shot Blasting: Shot blasting involves the use of high-speed abrasive particles propelled against the inner surface of the steel pipe to remove rust, scale, or other contaminants. This method is commonly used for larger pipes or pipes with heavy deposits. It provides a thorough and uniform cleaning by removing the surface layer of the steel along with the contaminants. 5. Ultrasonic Cleaning: Ultrasonic cleaning uses high-frequency sound waves to create microscopic bubbles in a cleaning solution. These bubbles implode upon contact with the inner surface of the steel pipe, effectively loosening and removing contaminants. This method is particularly effective for cleaning small-diameter pipes or pipes with intricate details. It is important to note that the selection of the cleaning method depends on various factors such as the type and extent of contamination, pipe size and geometry, and the desired level of cleanliness. Additionally, proper safety measures should always be taken when performing any cleaning method to ensure the protection of workers and the integrity of the steel pipes.
Q: How to make the internal tooth of the steel pipe?
Compared with the ordinary light pipe, tube can effectively prevent the formation of steam film between the seal and the pipe wall, increase the light disturbance flow inside the tube, the tube wall temperature is more uniform, which can avoid the light pipe damage, and improve the heat transfer efficiency of boiler. The number of thread head of internal thread pipe is 4, 6 head and 8 head according to need. The main materials are 20G, SA210C, T2, T12, 12Cr1MoVG, 15CrMoG, T22, T23 and so on. China needs 2.5~3.0 tons per year of inner thread tube.
Q: Can steel pipes be used for fencing?
Yes, steel pipes can be used for fencing. They are strong, durable, and provide excellent security. Steel pipes are commonly used in industrial and commercial settings, as well as for agricultural purposes. They can be easily welded and can withstand harsh weather conditions, making them an ideal material for fencing.
Q: What are the factors to consider when selecting steel pipes?
Some factors to consider when selecting steel pipes include the intended application and environment, the required strength and durability, the size and thickness of the pipes, the corrosion resistance, the cost, and the availability of different types of steel pipes.

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