• ASTM A213 T91 boiler tube System 1
  • ASTM A213 T91 boiler tube System 2
ASTM A213 T91 boiler tube

ASTM A213 T91 boiler tube

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Shanghai
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Supply Capability:
30000 kg/month

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Alloy pipe stock grade   A335P11/P22/P12/P91/P92/P9/P5   A213 T11/T22/T12/T91/T91/T9/T5

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 different sizes of threads available for steel pipes?
The different sizes of threads available for steel pipes include standard pipe threads such as NPT (National Pipe Taper) and NPS (National Pipe Straight), as well as metric pipe threads like MPT (Metric Pipe Taper) and MPS (Metric Pipe Straight). These sizes can vary from 1/8 inch all the way up to several inches in diameter, depending on the specific application and industry requirements.
Q: How are steel pipes used in the manufacturing of chemical processing plants?
Steel pipes are commonly used in chemical processing plants for various purposes, such as transporting fluids and gases, as well as providing structural support. They are highly resistant to corrosion, making them ideal for handling corrosive materials in the plant. Additionally, steel pipes can withstand high temperatures and pressure, ensuring the safe and efficient operation of chemical processes.
Q: What is the maximum temperature and pressure that steel pipes can withstand?
The maximum temperature and pressure that steel pipes can withstand depend on various factors such as the grade of steel, wall thickness, and intended application. However, in general, steel pipes can typically withstand temperatures up to 1000-1200°C (1800-2200°F) and pressures ranging from 1000-5000 psi (6.9-34.5 MPa). It is important to consult specific industry standards and engineering guidelines for accurate information based on the specific steel grade and application.
Q: What is the cost of steel pipes compared to other materials?
The cost of steel pipes compared to other materials can vary depending on factors such as size, grade, and market conditions. However, in general, steel pipes tend to be more cost-effective and economical compared to other materials like copper or PVC. Steel is a durable and versatile material that offers excellent strength and longevity, making it a preferred choice in various industries such as construction, oil and gas, and plumbing.
Q: Are steel pipes suitable for potable water applications?
Yes, steel pipes are suitable for potable water applications. They are commonly used in water distribution systems due to their durability, strength, and resistance to corrosion. However, proper coating and lining techniques should be employed to ensure the water remains safe for consumption and to prevent any potential leaching of contaminants from the pipe material.
Q: What is the process of coating steel pipes?
The process of coating steel pipes involves several steps. First, the pipes are cleaned to remove any dirt, rust, or other contaminants. Then, a primer is applied to enhance adhesion and provide a protective layer. Next, the pipes are coated with a specialized coating material, such as epoxy, polyethylene, or zinc, depending on the desired level of corrosion resistance. This coating is applied using various methods, including spraying, dipping, or wrapping. Finally, the coated pipes undergo a curing process, which allows the coating to harden and form a durable barrier against corrosion.
Q: How are steel pipes used in railway infrastructure?
Steel pipes are used in railway infrastructure for various purposes such as constructing bridges, tunnels, and track supports. They are also used for drainage systems, signaling and telecommunication cables, and as conduits for electrical wiring.
Q: Can steel pipes be used for sewage systems?
Yes, steel pipes can be used for sewage systems. Steel pipes are commonly used in sewage systems for their durability, strength, and resistance to corrosion. They are suitable for transporting sewage and wastewater, ensuring reliable and long-lasting performance.
Q: How are steel pipes used in the manufacturing of furniture?
Steel pipes are often used in the manufacturing of furniture as structural components. They are commonly employed for creating sturdy frames for chairs, tables, and other items. The pipes provide strength and durability, allowing furniture to withstand heavy loads and daily use. Additionally, steel pipes are often used for creating unique designs and modern aesthetics in furniture pieces.
Q: What are the factors to consider when selecting steel pipes?
When selecting steel pipes, there are several factors that need to be considered. These factors include the intended application, the required dimensions and specifications, the level of corrosion resistance needed, the operating temperature and pressure, the cost, and the availability of the specific type of steel pipe. It is important to carefully evaluate these factors to ensure that the selected steel pipes are suitable for the intended use and meet all the necessary requirements.

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