ASTM A213 T91 boiler tube 1132

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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: What is the difference between steel pipes and PVC-U pipes?: Steel pipes are made of a durable and strong material, while PVC-U pipes are made of a plastic material. Steel pipes are typically used for high-pressure and heavy-duty applications, as they can withstand harsh conditions and have a longer lifespan. PVC-U pipes, on the other hand, are lighter in weight, easier to handle, and resistant to corrosion and chemicals. They are commonly used for low-pressure applications and are more cost-effective.

Q: What are the specific differences between flexible pipes and rigid pipes?: Watch from outside:The rigid waterproof sleeve is made up of steel bushing and wing ring, and the structure is simple;The flexible waterproof sleeve mainly consists of flange sleeve, sealing ring, flange, pressure plate, wing ring, bolt and nut. The structure is complicated.

Q: What is the difference between seamless steel pipes and seamless stainless steel pipes?: The main difference between seamless steel pipes and seamless stainless steel pipes lies in their composition. Seamless steel pipes are typically made from carbon steel, which is an alloy of iron and carbon. On the other hand, seamless stainless steel pipes are made from an alloy of iron, carbon, and chromium, which gives them enhanced corrosion resistance and durability. This makes seamless stainless steel pipes suitable for applications where resistance to corrosion is essential, such as in the food industry or in environments with high humidity or exposure to chemicals.

Q: What is the maximum length of steel pipes available in the market?: The market offers steel pipes in varying maximum lengths, which are influenced by factors like steel type, manufacturing capacity, transportation restrictions, and customer demands. Generally, steel pipes can be produced up to 12 meters (40 feet) or even longer. However, it is crucial to consider that handling and transporting longer lengths might pose challenges, necessitating specialized equipment or techniques. Ultimately, the industry and customers' specific requirements and capabilities determine the maximum length of steel pipes available in the market.

Q: What is the difference between steel pipe and PVC pipe?: Steel pipe and PVC pipe are both commonly used materials for plumbing and other construction applications, but they have several key differences. Firstly, the material itself is different. Steel pipe is made from steel, which is an alloy of iron and carbon. It is known for its strength and durability, making it suitable for high-pressure applications and underground installations. On the other hand, PVC (polyvinyl chloride) pipe is made from a type of plastic known as PVC. It is lightweight, flexible, and easy to handle, making it a popular choice for residential plumbing and irrigation systems. Secondly, the installation process differs. Steel pipe requires skilled labor and specialized tools for cutting, threading, and welding. It often involves a complex installation process, especially for larger pipe sizes. PVC pipe, on the other hand, can be easily cut with a saw or specialized pipe cutter and joined together using solvent cement or threaded fittings. This makes PVC pipe more suitable for do-it-yourself projects and simpler installations. Thirdly, steel pipe has a higher cost compared to PVC pipe. Steel is a more expensive material, and the manufacturing process for steel pipe is more complex, involving multiple steps and additional materials. PVC pipe, being made from plastic, is generally cheaper and more cost-effective, especially for smaller diameter applications. In terms of performance, steel pipe has higher tensile strength, can withstand higher pressure, and is more resistant to temperature changes, making it ideal for heavy-duty and industrial applications. PVC pipe, on the other hand, has a lower tensile strength but is resistant to corrosion, chemicals, and scale buildup. It is commonly used in residential plumbing, irrigation systems, and other non-industrial applications. In summary, the main differences between steel pipe and PVC pipe lie in the material, installation process, cost, and performance characteristics. While steel pipe is stronger and more suitable for heavy-duty applications, PVC pipe is lighter, easier to install, and more cost-effective for residential and non-industrial uses.

Q: Heating system DN40 and DN32 welded steel pipe how to connect?: Welding: AC arc welding machine welding. Mode 1: apply to the medium of non demanding piping, DN40 steel pipe necking and DN32 steel pipe butt welding, or directly DN32 steel pipe into the DN40 internal welding. 2: the pipeline requirements apply to the inner wall of smooth transition, reducing short circuit welding for DN40x32 suppression of this mechanism are used for connection pipe seamless steel pipe high pressure pipeline connection, no special requirements, not commonly used welded steel pipe. Connection of mechanism fittings is not only costly, but not necessary unless special requirements are required!

Q: Are steel pipes magnetic?: Yes, steel pipes can be magnetic. Steel, which is primarily composed of iron, is a ferromagnetic material. This means that it can be magnetized or attracted to magnets. However, not all steel pipes are magnetic as the magnetic properties of steel can vary depending on the specific composition and production methods used. In some cases, steel can be made non-magnetic by adding certain alloying elements or by subjecting it to specific heat treatments. Additionally, the strength of the magnetic field that steel pipes can exhibit can vary depending on factors such as the thickness of the pipe and the strength of the magnet being used.

Q: What are the common uses of steel pipes in construction?: Due to their durability and strength, steel pipes are widely used in construction for various purposes. Plumbing systems in buildings commonly rely on steel pipes, which can effectively transport water, gas, and other fluids. Their resistance to corrosion and ability to withstand high pressure make them the preferred choice over alternative materials. Steel pipes are also frequently employed for structural support in construction. They serve as columns or beams, providing buildings with structural integrity and stability. With their capacity to support heavy loads, steel pipes are highly favored in the construction industry. Bridges and highways often incorporate steel pipes into their design. They are utilized to create sturdy and long-lasting bridge supports, guardrails, and signposts. The ability of steel pipes to endure extreme weather conditions and heavy traffic makes them a reliable option for infrastructure projects. Additionally, steel pipes are indispensable for underground utilities like sewer and drainage systems. They offer a robust solution for transporting wastewater and preventing leaks. Moreover, they play a crucial role in constructing underground tunnels and pipelines. Furthermore, steel pipes find application in fencing, scaffolding, and handrails in construction. Their strength, versatility, and ability to withstand harsh environmental conditions make them a preferred choice. In summary, steel pipes are vital components in construction due to their numerous advantages. Their durability, strength, and resistance to corrosion make them a reliable choice for various applications in the construction industry.

Q: Can steel pipes be used for petrochemical plants?: Yes, steel pipes can be used for petrochemical plants. Steel pipes are commonly used in petrochemical plants due to their high strength, durability, and resistance to corrosion. They are suitable for transporting various chemicals, gases, and liquids involved in petrochemical processes. Additionally, steel pipes can withstand high pressures and temperatures, making them a reliable choice in the demanding environment of petrochemical plants.

Q: How are steel pipes used in heating systems?: Steel pipes are commonly used in heating systems to transport hot water or steam from the boiler to the radiators or heating units. The durability and strength of steel make it an ideal choice for withstanding high temperatures and pressure. These pipes are typically installed underground or within the walls and floors of buildings to distribute heat efficiently throughout the space.

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