ASTM A213 T91 boiler tube 5698

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Supply Capability:: 30000 kg/month

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T91 alloy pipe is America national tree like ridge and America combustion new martensitic heat-resistant steel engineering company metallurgical materials laboratory research work. It is to reduce the carbon content of 9Cr1MoV steel on the basis of the content of sulphur, phosphorus, strictly limit the vanadium, niobium, adding small amount of alloying elements.

The number of K90901 T91 alloy tube

T91 alloy tube

T91 alloy pipe specifications: 8-1240 x 1-200mm

Overview of T91 alloy tube:

T91 alloy tubes for ferrite and Olympic alloy steel seamless steel tube boiler, overheating and heat exchanger belongs to (ASTM A213 / A213M-07a)

Use:

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 industrial pipe.

Heat treatment of T91 alloy tube:

The final heat of T91 treatment for normalizing and high temperature tempering, normalizing temperature 1040 C, the holding time of not less than 10 min, the tempering temperature is 730 to 780 DEG C, the heat preservation time is not less than 1h, the final heat treatment on Microstructure of tempered martensite

Q: What are the standard dimensions for steel pipes?: The standard dimensions for steel pipes vary depending on the application and industry. However, common sizes range from ½ inch to 48 inches in diameter and have various wall thicknesses based on the required strength and pressure rating.

Q: How are steel pipes sized and classified?: Steel pipes are sized and classified primarily based on their outer diameter (OD) and wall thickness. The sizing of steel pipes is standardized to ensure compatibility and ease of use in various applications. The most common method of sizing steel pipes is by nominal pipe size (NPS), which is a North American standard that refers to a pipe's OD. NPS sizes range from 1/8 inch to 36 inches, with each size corresponding to a specific OD. For example, a 1/2-inch NPS pipe has an OD of 0.84 inches, while a 12-inch NPS pipe has an OD of 12.75 inches. It is important to note that the OD of a pipe may not necessarily match its actual measurement, as it is based on historical pipe dimensions. Additionally, steel pipes are classified into different schedules, which indicate the wall thickness of the pipe. The most common schedules are SCH 5, SCH 10, SCH 40, SCH 80, and SCH 160, with higher numbers representing thicker walls. These schedules are standardized and help in selecting the appropriate pipe for a given application. Furthermore, steel pipes may be further classified based on their end connections. The most common types include threaded, plain-end, and socket-weld connections. Threaded pipes have screw threads on both ends, allowing for easy assembly and disassembly. Plain-end pipes have no threads and are usually joined using welding techniques. Socket-weld pipes have a socket-like end that allows for welding with a corresponding fitting. In summary, steel pipes are sized and classified based on their outer diameter, wall thickness, and end connections. The nominal pipe size (NPS) indicates the outer diameter, while the schedule number represents the wall thickness. Understanding the sizing and classification of steel pipes is crucial in selecting the appropriate pipe for specific applications in industries such as construction, oil and gas, plumbing, and manufacturing.

Q: How are steel pipes used in the manufacturing of agricultural machinery?: Steel pipes are commonly used in the manufacturing of agricultural machinery for various purposes such as structural support, fluid transportation, and hydraulic systems. They provide durability and strength to the machinery, allowing it to withstand the heavy loads and harsh conditions associated with agricultural activities. Additionally, steel pipes are often used to create the framework and chassis of the machinery, ensuring its stability and longevity in the field.

Q: How are steel pipes repaired in case of damage or leaks?: Various methods can be used to repair steel pipes in the event of damage or leaks. Welding is a common approach where a filler material is melted along with the damaged or leaking area, creating a strong bond that seals the leak. This method is effective for small to moderate-sized leaks and finds wide application in industries like oil and gas, plumbing, and construction. Another method involves the use of mechanical couplings. These couplings are designed to connect two sections of pipe securely, ensuring a tight connection. They can be utilized to repair damaged or leaking sections of a steel pipe by removing the damaged area and replacing it with a new section that is linked using the mechanical coupling. This method is particularly useful for larger leaks or damaged sections that cannot be repaired through welding. In certain cases, temporary fixes can be applied using pipe clamps or epoxy compounds. Pipe clamps are employed to seal the damaged area tightly, preventing further leakage. On the other hand, epoxy compounds are directly applied to the damaged or leaking section, creating a temporary seal that stops the leak until a more permanent repair can be carried out. It is essential to consider the severity and location of the damage or leak, as well as the specific requirements of the application, when deciding on the method of repair. In some instances, it may be necessary to replace the entire section of the steel pipe if the damage is extensive or if multiple leaks are present. It is advisable to consult a professional or a specialized pipe repair service to determine the most suitable repair method for a particular situation.

Q: What is the difference between hot-dip galvanizing and electroplating of steel pipes?: Hot-dip galvanizing and electroplating are two different methods of applying a protective coating to steel pipes. Hot-dip galvanizing involves immersing the steel pipes in a bath of molten zinc, which creates a thick, durable coating that provides excellent corrosion protection. On the other hand, electroplating involves passing an electric current through a solution containing zinc ions, which causes the zinc to bond to the surface of the steel pipes. While electroplating can provide a thinner coating, it is generally less durable and may require additional layers or coatings for sufficient corrosion resistance.

Q: What are the different types of steel pipe supports for offshore platforms?: There are several types of steel pipe supports commonly used for offshore platforms, including but not limited to: 1. Clamps: These are used to secure and fasten pipes to the support structure, providing stability and preventing movement. 2. Hangers: These are used to suspend pipes from the support structure, allowing for flexibility and reducing stress on the pipes. 3. Guides: These are installed to control the movement and alignment of pipes, ensuring they stay in place and prevent damage during operation. 4. Shoes: These are used to support and distribute the weight of the pipe, typically at points where the pipe intersects with the support structure. 5. Saddles: These are designed to cradle the pipe and provide support, typically used for horizontal or inclined pipes. Each type of steel pipe support serves a specific purpose in ensuring the integrity and functionality of the offshore platform's piping system.

Q: What are the applications of steel pipes?: Steel pipes have a wide range of applications in various industries due to their durability, strength, and versatility. Some of the common applications of steel pipes include: 1. Plumbing and water distribution: Steel pipes are commonly used in plumbing systems to transport water and other fluids. They are resistant to corrosion and can withstand high pressure, making them ideal for water distribution networks in residential, commercial, and industrial buildings. 2. Oil and gas industry: Steel pipes are extensively used in the oil and gas industry for the transportation of oil, natural gas, and other petroleum products. They are able to handle high-pressure and high-temperature environments, making them crucial in drilling, production, and refining processes. 3. Construction and infrastructure: Steel pipes are widely employed in construction projects for various purposes such as structural support, foundations, scaffolding, and underground piping systems. They provide a strong and reliable framework for buildings, bridges, tunnels, and highways. 4. Industrial applications: Steel pipes are used in various industrial applications such as manufacturing, power plants, chemical processing, and food processing. They are often used to transport liquids, gases, or slurries within the production processes or to transfer heat in heat exchangers and condensers. 5. Agricultural sector: Steel pipes are commonly used in the agricultural sector for irrigation systems, particularly in large-scale farming. They are used to transport water from a water source to the fields, ensuring efficient and controlled water distribution. 6. Mining industry: Steel pipes are utilized in the mining industry for the extraction and transportation of minerals, ores, and other mining materials. They are resistant to abrasion and corrosion, making them suitable for the harsh and demanding conditions of mining operations. 7. Mechanical and automotive applications: Steel pipes find application in the manufacturing of various mechanical components, such as automotive exhaust systems, hydraulic cylinders, and precision tubing. They offer high strength, dimensional stability, and resistance to impact and vibration. 8. Infrastructure and utilities: Steel pipes are commonly used in infrastructure projects for the transportation of sewage, stormwater, and wastewater. They are durable, resistant to chemical corrosion, and can withstand underground conditions, making them suitable for sewer and drainage systems. In summary, the applications of steel pipes are vast and diverse, ranging from plumbing and water distribution to oil and gas industry, construction, agriculture, mining, mechanical and automotive sectors, and infrastructure projects. Their robustness, versatility, and ability to withstand extreme conditions make them a fundamental component in numerous industries.

Q: How are steel pipes used in the construction of wind farms?: Steel pipes are commonly used in the construction of wind farms for various purposes. They are primarily used for the foundation of wind turbine towers, providing structural support and stability. Steel pipes are also used for the transmission of electrical cables, ensuring efficient power distribution throughout the wind farm. Additionally, steel pipes are employed in the construction of access roads, drainage systems, and other infrastructure required for the successful operation of wind farms.

Q: How are steel pipes used in the mining industry?: Steel pipes are commonly used in the mining industry for various purposes such as transporting water, slurry, and other materials, as well as for ventilation and support systems in underground mines.

Q: Are steel pipes suitable for use in mining applications?: Yes, steel pipes are suitable for use in mining applications. They are highly durable, resistant to corrosion, and can withstand high pressure and extreme temperatures often encountered in mining operations. Additionally, steel pipes have excellent structural integrity and can be easily welded, making them ideal for various mining activities such as transporting fluids, ventilation systems, and underground infrastructure.

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