TP347HStainless steel pipe

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The TP347H stainless steel pipe is a kind of austenitic stainless acid resistant steel, with good resistance to intergranular corrosion resistance and good corrosion resistance, mainly used in aerospace, petrochemical, food, paper and other industries.

TP347H stainless steel is austenitic stainless acid resistant steel, are widely used in aerospace, petrochemical, food, paper and other industries, such as the exhaust duct and branch of aero engine turbine compressor, heat pipes and parts of not more than 850 DEG C under the working conditions in a small load and temperature.

The characteristics of TP347H stainless steel pipe is corrosion, intergranular anti good in acid, alkali, salt solution, have good corrosion resistance.

The physical constants of TP347H stainless steel pipe:

Melting point: the temperature of 1398-1427 DEG C

Specific heat capacity: 500J (kg.K)

The elastic modulus at 20 DEG C: 196GPa, 200 DEG C to 400 DEG C for 186GPa, 177GPa, 500 degrees 167GPa, 600 DEG C for 167GPa

Specific resistance: 0.75nN.m

Chemical composition of TP347H stainless steel pipe:

C: = 0.10, Si: = 1 Mn: = 2 Cr:17.0-20.0 Ni:9.0-13.0 Nb:8 * C%-1.5 S: = 0.030 P: = 0.035

Mechanical properties of TP347H stainless steel pipe:

20 C: 559-637 235-274 53-61 63-69 20.6-27.4

500 C: 392-429 147-216 28-36 56-66 23.5-28.4

600 C: 363-382 137-186 28-34 54-65 24.5-30.4

650 C: 304-363 118-167 31-38 54-61 23.5-31.4

700 C: 245-304 31-42 44-60 24.5-29.4

Heat treatment of TP347H stainless steel pipe:

The temperature of 1000-1100 DEG C solid solution treatment, water cooling

Corrosion resistance of TP347H stainless steel pipe:

Uniform corrosion

Intergranular corrosion by sulfuric acid with copper sulphate and copper scrap method (T method), copper and sulfuric acid sulfuric acid method (L method) and 65%HNO3 method (X method) test

Antioxidation: at 750-800 DEG C in the air, the antioxidant properties of this steel has stable

Q: Can steel pipes be used for underground oil pipelines?: Indeed, underground oil pipelines can utilize steel pipes. The construction of underground oil pipelines heavily relies on steel pipes owing to their robustness, longevity, and resistance to corrosion. They possess the capability to endure the immense pressure and weight exerted by the oil being transported, along with external forces like soil displacement or seismic events. Moreover, steel pipes can be fortified with coatings or linings such as epoxy or polyethylene, enhancing their resistance to corrosion and extending their lifespan. In conclusion, steel pipes emerge as a dependable and extensively employed option for underground oil pipelines.

Q: Can steel pipes be used in plumbing systems?: Yes, steel pipes can be used in plumbing systems. Steel pipes are commonly used for plumbing due to their durability, strength, and resistance to corrosion. They are suitable for both residential and commercial plumbing applications and can effectively transport water, gas, and other fluids.

Q: Can steel pipes be used for underground sewer systems?: Yes, steel pipes can be used for underground sewer systems. Steel pipes are known for their durability, strength, and resistance to corrosion, making them a suitable choice for underground applications such as sewer systems. However, it is important to consider factors like soil conditions, potential for corrosion, and local regulations before selecting steel pipes for an underground sewer system.

Q: What is the shear strength of steel pipes?: The shear strength of steel pipes can vary based on a variety of factors including the grade and thickness of the steel, as well as the manufacturing process and any additional treatments or coatings applied. Steel pipes generally possess a high shear strength due to the inherent strength of steel as a material. Determination of shear strength is typically achieved through testing and can range from 50,000 to 80,000 pounds per square inch (PSI) for common grades of steel pipes. However, it is important to acknowledge that the shear strength can be considerably higher for specialized or higher-grade steel pipes that are specifically designed for applications such as offshore drilling or high-pressure systems. Therefore, it is advisable to refer to the manufacturer's specifications or engineering standards for precise and specific shear strength values for a particular steel pipe.

Q: What is the single length of galvanized steel pipe?: The single length of galvanized pipe is 6 meters. The length of galvanized seamless steel tube is uncertain, depending on the length of seamless steel tube.

Q: How are steel pipes tested for quality control?: Steel pipes are tested for quality control through various methods such as visual inspection, non-destructive testing, and physical testing. Visual inspection involves checking the pipes for any visible defects or inconsistencies in their appearance. Non-destructive testing methods like ultrasonic testing, magnetic particle testing, and radiographic testing are used to detect internal flaws or defects without damaging the pipes. Additionally, physical tests like tensile and impact testing are performed to evaluate the mechanical properties of the pipes. These comprehensive testing techniques ensure that steel pipes meet the required quality standards before they are used in various applications.

Q: What is the role of steel pipes in the transportation of liquefied natural gas (LNG)?: Steel pipes play a vital role in the transportation of liquefied natural gas (LNG) due to their unique properties and characteristics. LNG is a form of natural gas that has been cooled to a liquid state for ease of transportation and storage. The transportation of LNG requires specific infrastructure, and steel pipes are an essential component of this infrastructure. Firstly, steel pipes are used in the construction of LNG terminals and liquefaction plants. These facilities are responsible for converting natural gas into its liquid form and storing it before transportation. The extreme cold temperatures required to maintain LNG in its liquid state necessitate the use of materials that can withstand these conditions, and steel pipes are well-suited for this purpose. Steel pipes have excellent strength and durability, making them capable of handling the low temperatures and high pressures involved in the liquefaction and storage processes. Secondly, steel pipes are used in the transportation of LNG from the liquefaction plants to the storage tanks or shipping vessels. LNG is typically transported over long distances, either through pipelines or via specialized LNG carriers. Steel pipes are used in the construction of underground or above-ground pipelines, providing a reliable and safe means of transporting the LNG. The pipes must be able to maintain the low temperatures of the LNG while withstanding the pressures and stresses associated with the transportation process. Steel pipes offer the necessary strength, corrosion resistance, and thermal properties to ensure the safe and efficient transportation of LNG. Lastly, steel pipes are also used in the construction of storage tanks for LNG. These tanks are designed to maintain the LNG in its liquid state until it is ready for use or further transportation. The tanks are often constructed using a combination of steel plates and steel pipes. Steel pipes are used to connect the various components of the tank, such as the inner and outer shells, reinforcing the structural integrity of the tank and ensuring its ability to withstand the extreme conditions to which it is subjected. In summary, steel pipes play a crucial role in the transportation of liquefied natural gas (LNG) due to their strength, durability, and ability to withstand low temperatures and high pressures. From the construction of LNG terminals and liquefaction plants to the transportation through pipelines or on specialized vessels, steel pipes are a vital component of the infrastructure required for the safe and efficient transportation and storage of LNG.

Q: Are steel pipes suitable for HVAC systems?: Indeed, steel pipes prove to be a suitable option for HVAC systems. HVAC applications widely favor steel pipes due to their numerous advantages. Initially, their robustness and durability enable them to endure the high pressure and temperature requirements commonly associated with HVAC systems. Furthermore, steel pipes exhibit exceptional resistance to corrosion, rendering them suitable for both indoor and outdoor installations. Moreover, their extended lifespan significantly reduces the need for frequent replacements or repairs. Additionally, the availability of steel pipes in various sizes and thicknesses facilitates effortless customization and installation. Lastly, steel pipes offer a cost-effective solution for HVAC systems compared to alternative materials, making them a financially efficient choice. In conclusion, steel pipes emerge as a reliable and appropriate selection for HVAC systems due to their strength, durability, corrosion resistance, availability, and cost-effectiveness.

Q: What is the difference between hot-dip galvanizing and electroplating for steel pipes?: Steel pipes can be protected from corrosion using hot-dip galvanizing or electroplating, but these methods have distinct differences. With hot-dip galvanizing, the steel pipes are immersed in molten zinc, creating a strong bond with the steel. This results in a thick and durable zinc coating that effectively prevents corrosion. The entire surface of the pipe, both inside and outside, is uniformly covered, making hot-dip galvanizing ideal for comprehensive protection. Electroplating, on the other hand, involves depositing a thin layer of metal, usually zinc, onto the steel surface using an electric current. Unlike hot-dip galvanizing, electroplating does not form a metallurgical bond between the zinc and steel. Instead, it forms a mechanical bond, which is weaker and less long-lasting. The electroplated zinc layer is also thinner, offering less corrosion protection compared to hot-dip galvanizing. The application process is another point of differentiation. Hot-dip galvanizing requires immersion in molten zinc, which can be time-consuming. Electroplating, on the other hand, uses an electrolytic cell for zinc coating application, which is faster and more efficient. In conclusion, the thickness, durability, and bonding mechanism between zinc and steel distinguish hot-dip galvanizing from electroplating for steel pipes. Hot-dip galvanizing provides a thicker, longer-lasting coating with a metallurgical bond, making it superior for extended corrosion protection. Electroplating, however, creates a thinner coating with a mechanical bond, suitable for applications where a less robust level of corrosion resistance is acceptable.

Q: 20# seamless steel pipe and seamless steel pipe 20G what is the difference?: 20#: low carbon steel seamless steel pipe, carbon steel is generally divided into low carbon steel, medium carbon steel and high carbon steel three, 45# steel in carbon steel, low carbon steel is lower than 45#, 45# is higher than that of high carbon steel, seamless steel pipe, such as no special requirements, using 20# seamless steel tube. 20# seamless steel pipe material is 20# steel, the strength is slightly higher than 15#, very little quenching, no temper brittleness. Cold plastic deformation and for bending, rolling, bending and hammer arch processing, arc welding and contact welding welding performance is good, when the thickness is small, prone to strict requirement of shape crack or complex shape parts. The cold or normalizing state of the cutting process is better than that of the annealed one. It is generally used to make workpieces with little stress and high toughness.

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