ASTM A213 T91 boiler tube 2321

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

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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:How are steel pipes transported?: Steel pipes can be transported using various methods depending on their size, weight, and distance to be covered. The most common modes of transportation for steel pipes include trucks, trains, and ships. For short distances, steel pipes are often transported using trucks. They are loaded onto flatbed trailers or in some cases, specialized pipe trailers that are specifically designed to securely hold and transport pipes. These trucks can easily navigate local roads and highways, making them a convenient option for transporting steel pipes to nearby locations or construction sites. When it comes to long-distance transportation, trains are commonly used. Steel pipes are loaded onto flatcars, which are specifically designed to carry heavy loads. This method is preferred when transporting large quantities of steel pipes over long distances, as trains provide a cost-effective and efficient means of transportation. Moreover, trains are capable of transporting pipes of various lengths and diameters, making them a versatile option. For international shipments or transportation over bodies of water, steel pipes are often transported by ships. Steel pipes can be loaded into shipping containers or onto the deck of a cargo ship. Shipping containers provide protection from weather conditions and ensure the pipes remain secure during transit. Additionally, specialized ships equipped with cranes can handle large and heavy pipes, facilitating the transportation of oversized steel pipes. In some cases, pipelines can also be constructed to transport steel pipes directly from the manufacturing facility to the desired location. This method is commonly used for projects involving oil, gas, or water pipelines. The pipes are laid underground, eliminating the need for separate transportation. Overall, the transportation of steel pipes involves a variety of methods, including trucks, trains, ships, and pipelines, depending on the distance, quantity, and specific requirements of the project. Each method has its advantages and is chosen based on factors such as cost, efficiency, and logistics.

Q:What are the different types of steel pipe connections for steam pipelines?: There are several types of steel pipe connections commonly used for steam pipelines, including threaded connections, flanged connections, welded connections, and grooved connections.

Q:How do steel pipes compare to other pipe materials like PVC or copper?: Steel pipes have several advantages over other pipe materials like PVC or copper. Firstly, steel pipes are incredibly strong and durable, making them suitable for high-pressure applications and long-term use. They have a higher resistance to cracking or breaking, which is especially beneficial in demanding environments. Secondly, steel pipes have excellent heat resistance, making them ideal for transporting hot fluids. On the other hand, PVC pipes are more lightweight, cost-effective, and easy to install, making them suitable for non-pressure applications. Copper pipes are known for their corrosion resistance and ability to handle high temperatures, but they are typically more expensive. Overall, the choice between steel, PVC, or copper pipes depends on the specific requirements of the application, considering factors like pressure, temperature, cost, and ease of installation.

Q:How are steel pipes cleaned and flushed?: Steel pipes can be cleaned and flushed using various methods depending on the specific requirements and conditions. One common method is mechanical cleaning, which involves the use of wire brushes, scrapers, or other abrasive tools to physically remove any debris, rust, or scale from the inner surface of the pipes. This method is effective for removing loose or easily detachable contaminants. Chemical cleaning is another widely used method, especially for pipes with more stubborn deposits or rust. Various chemicals or cleaning agents are flushed through the pipes to dissolve or loosen the buildup, which can then be washed away. Acid-based solutions are commonly used for this purpose, but it is important to choose the appropriate chemical and concentration to avoid damaging the pipes. High-pressure water jetting is another effective method for cleaning and flushing steel pipes. Water is pumped at high pressure through a nozzle, creating a powerful jet that can dislodge and remove any debris or deposits from the pipe walls. This method is particularly useful for removing hard or compacted materials that cannot be easily removed by other means. In some cases, a combination of these methods may be required to achieve the desired cleanliness. For instance, a pre-cleaning with mechanical tools can be followed by chemical cleaning or high-pressure water jetting to ensure thorough flushing and removal of contaminants. Regular maintenance and cleaning of steel pipes are essential to maintain their efficiency and prevent corrosion. It is important to follow proper procedures and safety guidelines when cleaning and flushing steel pipes to ensure effective results and avoid any damage to the pipes.

Q:Can steel pipes be used for conveying sewage and wastewater?: Indeed, sewage and wastewater can be conveyed using steel pipes. The use of steel pipes is widespread in sewage and wastewater systems owing to their robustness and resilience. They possess corrosion resistance and can endure immense pressure and flow rates. Moreover, steel pipes have the capability to manage the rigorous chemicals and pollutants found in sewage and wastewater without impairing or compromising the fluid quality. Nonetheless, it is crucial to guarantee proper coating or lining of the steel pipes to avert any potential problems concerning corrosion or contamination. Regular maintenance and inspections are equally important to detect and rectify any potential concerns that may arise within the system.

Q:Seamless steel pipe and welded pipe what is the difference?: Seamless steel pipe is made of solid round tubes and perforated without gaps. The welded pipe is made of steel or strip after welding and has a slit. Generally seamless pipe can be greater pressure on the city.

Q:What are the different types of coatings used for external protection of steel pipes?: There are several types of coatings used for external protection of steel pipes. Some common ones include epoxy coatings, polyethylene coatings, coal tar coatings, and fusion bonded epoxy coatings. Each type of coating offers specific benefits and is chosen based on factors such as the environment, type of exposure, and desired level of protection.

Q:Is the seamless steel pipe used in the market hot or cold drawn?: Outside diameter 89, most are cold drawn, more than 89 hot rolling.

Q:What is the weight of hot galvanized steel tubes? DN150 4mm wall thickness: GB/T3091-2008: DN150 welded steel pipe, wall thickness of 6mm, the theory of the weight of welded steel pipe 24.02kg/m, galvanized steel pipe should be multiplied by the weight coefficient after galvanizing, C, DN150, wall thickness of 6mm, C=1.02, DN150, theoretical weight and wall thickness of 6mm galvanized steel 1.02*24.02= 24.5kg/m.

Q:How are steel pipes used in the telecommunications network infrastructure?: Steel pipes are widely used in the telecommunications network infrastructure for various purposes. One of the primary uses of steel pipes in this industry is for the installation of underground cable conduits. These conduits protect the telecommunications cables from external factors such as moisture, rodents, and physical damage. Steel pipes provide excellent strength and durability, ensuring the long-term protection of the cables. Additionally, steel pipes are used in the construction of telecom towers and antenna masts. These structures need to be sturdy and able to withstand harsh weather conditions. Steel pipes offer the necessary strength, stability, and resilience required for telecom towers to support antennas and other equipment. They can be easily assembled, allowing for efficient deployment and maintenance of the network infrastructure. Moreover, steel pipes are essential for the installation of fiber optic cables. Fiber optic cables transmit data at high speeds using light signals. To ensure optimal performance, these cables need to be protected from any external interference. Steel pipes serve as a conduit for fiber optic cables, shielding them from electromagnetic interference and other potential disruptions. In summary, steel pipes play a crucial role in the telecommunications network infrastructure. They are used for the installation of underground cable conduits, construction of telecom towers, and protection of fiber optic cables. The strength, durability, and versatility of steel pipes make them an ideal choice for ensuring the reliability and functionality of telecommunications systems.

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