Steel pipe A335P9 1-18

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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: How are steel pipes used in mining?: Steel pipes are extensively used in mining for various purposes, such as transporting fluids, ventilation systems, and structural support. They are commonly employed for carrying water, slurry, or other liquids to different parts of the mine. Additionally, steel pipes are utilized for creating ventilation systems to ensure fresh air supply and remove harmful gases from underground mining operations. Moreover, they provide crucial structural support for tunnels, shafts, and other mining infrastructure due to their strength and durability.

Q: How are steel pipes classified according to their wall thickness?: Steel pipes are classified according to their wall thickness into three categories: standard weight, extra-strong, and double extra-strong.

Q: Can steel pipes be used for underground fire sprinkler systems?: Underground fire sprinkler systems can indeed utilize steel pipes. The reason for their frequent usage in fire sprinkler systems is because of their robustness, endurance, and ability to withstand heat and corrosion. They prove to be suitable for underground installations as they guarantee a dependable and long-lasting performance. Moreover, steel pipes come in a variety of sizes and configurations, allowing for flexibility in the design and installation of underground fire sprinkler systems. Nevertheless, it is crucial to ensure that the steel pipes are properly coated or protected to prevent corrosion and maintain their effectiveness in an underground setting. Regular inspections and maintenance are also imperative in order to identify any potential issues or damages to the steel pipes, thus preserving the safety and functionality of the fire sprinkler system.

Q: What are the different methods of pipe bending for steel pipes?: There are several methods of pipe bending for steel pipes, each with its own advantages and limitations. 1. Manual Pipe Bending: This method involves using hand tools or a manual pipe bender to bend the steel pipe. It is suitable for small-scale projects or when only a few bends are required. However, it requires skill and precision to ensure accurate and consistent bends. 2. Rotary Draw Bending: This method utilizes a mandrel, clamp die, and a bending die to bend the pipe around a stationary bend die. The mandrel helps to maintain the shape and prevent wrinkling or collapsing of the pipe during the bending process. Rotary draw bending is commonly used for producing tight-radius bends with high accuracy and repeatability. 3. Induction Pipe Bending: In this method, an induction coil is used to heat a specific area of the steel pipe, making it more malleable for bending. Once the desired temperature is reached, the pipe is bent using hydraulic or mechanical force. Induction bending is suitable for large-diameter pipes or when multiple bends are required in a single pipe. 4. Roll Bending: Also known as pyramid rolling, this method involves passing the steel pipe through three adjustable rolls that gradually bend the pipe into the desired shape. Roll bending is suitable for producing large-radius bends and is commonly used in the construction of spiral staircases, handrails, and structural applications. 5. Hot Bending: This method involves heating the steel pipe to high temperatures, typically using a furnace, to facilitate bending. Hot bending allows for greater flexibility in shaping the pipe and is commonly used for large-diameter or thick-walled pipes. However, it requires specialized equipment and expertise to control the temperature and prevent distortion or damage to the pipe. It is important to consider factors such as the required bend radius, pipe diameter, wall thickness, and project specifications when selecting the appropriate method of pipe bending for steel pipes. Consulting with an experienced pipe bending professional or engineer can help determine the most suitable method for a specific application.

Q: How are steel pipes used in the wastewater treatment industry?: Steel pipes are commonly used in the wastewater treatment industry for various purposes, including the transportation of wastewater from one area to another, the distribution of treated water to different locations, and the construction of infrastructure such as pumping stations and treatment plants. Due to their durability, resistance to corrosion, and ability to withstand high pressure, steel pipes are essential components in the efficient and reliable operation of wastewater treatment systems.

Q: How are steel pipes protected against external damage?: Steel pipes are protected against external damage through various methods such as coatings, wraps, and cathodic protection. These protective measures help prevent corrosion, abrasion, and other forms of external damage, ensuring the durability and longevity of the pipes.

Q: Can steel pipes be used for firefighting systems?: Yes, steel pipes can be used for firefighting systems. Steel pipes are commonly used for their durability and resistance to high temperatures, making them suitable for transporting water and other fire suppression agents. They are typically used in larger commercial or industrial buildings where the fire protection system requires a higher flow rate and pressure. Steel pipes also have the advantage of being able to withstand external forces and impacts, ensuring the integrity of the firefighting system. Additionally, steel pipes can be easily connected, making them convenient for installation and maintenance purposes. However, it is important to ensure that the steel pipes used for firefighting systems are properly treated to prevent corrosion and rusting, as this can compromise their effectiveness in an emergency situation. Regular inspections and maintenance should be conducted to ensure the reliability and functionality of the steel pipes within the firefighting system.

Q: Can steel pipes be used for underground fire hydrants?: No, steel pipes are not typically used for underground fire hydrants. Underground fire hydrants are usually constructed using ductile iron pipes as they provide greater strength, durability, and resistance to corrosion, ensuring reliable water supply during emergencies.

Q: What are steel pipes?: Steel pipes are cylindrical tubes made of steel that are used for conveying fluids or gases, as well as for structural purposes in various industries.

Q: What are the different types of steel pipes?: There are several different types of steel pipes, including carbon steel pipes, stainless steel pipes, alloy steel pipes, and galvanized steel pipes. Carbon steel pipes are the most common type and are used for a wide range of applications. Stainless steel pipes are corrosion-resistant and often used in industries where hygiene is important. Alloy steel pipes are made from a combination of different metals to enhance their strength and durability. Galvanized steel pipes are coated with a layer of zinc to prevent corrosion and are commonly used in outdoor and marine applications.

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