• Stainles  stainless  steel  square  tube System 1
Stainles  stainless  steel  square  tube

Stainles stainless steel square tube

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
5 m.t.
Supply Capability:
4000 m.t./month

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Size(12-219) x (1-5) x (4000 - 13000)mm
Material grade304, 304L, TP304, TP304L, 316L, TP316L, 321, F321, etc.
StandardISO 9001/ ASTM A269/ A270/ A312/ A213, GB 14976/ GB 13296
DescriptionProcess MethodCold drawn and than cold rolled
Surface Finish2B,BA, Annealing and Pickling,Matt Finish or Satin Finish, Mirror Finish, Wire Drawing or Hairline Finish
Ends FinishPlain ends or Bevelled ends
TestEddy current/ Hydrostatic/ Ultrasonic/ Intergranular Corrosion or according to customers' request
ApplicationFor use in the Petroleum, Smelting, Foodstuff, Power, Papermaking, Chemical, Medical Equipment, Aviation, Boiler Heat-Exchanger and other fields
PackingEach in PVC bags, bundles with knitted plastic bag, wooden cases or according to customers' request

 

Q:What is the difference between 904L and 316 stainless steel pipes?
904L and 316 stainless steel are both commonly used materials for pipes in various industries. The main difference between these two grades lies in their composition, properties, and applications. 1. Composition: - 904L stainless steel contains high levels of chromium, nickel, and molybdenum, along with copper. It has a higher alloy content compared to 316 stainless steel. - 316 stainless steel, also known as marine grade stainless steel, contains significant amounts of chromium, nickel, and molybdenum. However, it lacks copper in its composition. 2. Corrosion Resistance: - 904L stainless steel is highly resistant to corrosion, especially in aggressive environments such as seawater and acidic conditions. Its high chromium, nickel, and molybdenum content provide superior protection against pitting and crevice corrosion. - 316 stainless steel also offers excellent corrosion resistance, particularly in marine and chloride-rich environments. However, it is not as resistant to corrosion as 904L stainless steel. 3. Strength and Durability: - 904L stainless steel exhibits higher strength and durability compared to 316 stainless steel due to its higher nickel and molybdenum content. It can withstand higher pressures and temperatures, making it suitable for applications in extreme conditions. - 316 stainless steel possesses good strength and durability but is slightly lower in comparison to 904L stainless steel. 4. Applications: - 904L stainless steel pipes are commonly used in industries such as petrochemical, chemical processing, oil and gas, and marine applications. They are ideal for environments with high chloride levels and acidic conditions. - 316 stainless steel pipes are widely used in various industries, including food processing, pharmaceuticals, architecture, and marine applications. They are suitable for general-purpose applications where corrosion resistance is required but not as critical as in aggressive environments. In summary, while both 904L and 316 stainless steel pipes offer corrosion resistance, 904L stainless steel provides superior performance in aggressive environments due to its higher alloy content. However, 316 stainless steel is more commonly used in general-purpose applications where a high level of corrosion resistance is not essential.
Q:Can stainless steel pipes be used for chemical processing plants?
Indeed, chemical processing plants can utilize stainless steel pipes. The utilization of stainless steel in chemical processing and other industrial sectors is prevalent due to its exceptional ability to resist corrosion. Chemical processing plants encounter a wide range of corrosive substances, namely acids, alkalis, and solvents, which have the potential to harm ordinary steel pipes. Nevertheless, stainless steel pipes exhibit a remarkable resistance to corrosion, rendering them appropriate for the transportation of aggressive chemicals, thus guaranteeing the plant's reliability and safety. Furthermore, stainless steel pipes possess the capacity to endure high temperatures, pressure, and mechanical strains, establishing them as a robust and enduring alternative for chemical processing plants.
Q:Are stainless steel pipes resistant to scaling and oxidation?
Yes, stainless steel pipes are highly resistant to scaling and oxidation. This is due to the presence of a protective layer of chromium oxide on the surface of stainless steel. This layer acts as a barrier, preventing the metal underneath from coming into contact with oxygen and other elements that may cause scaling and oxidation. As a result, stainless steel pipes are able to withstand high temperatures, corrosive environments, and frequent exposure to water without deteriorating or rusting. This makes them an excellent choice for various applications, such as in the construction, chemical, and food processing industries, where resistance to scaling and oxidation is crucial.
Q:Can stainless steel pipes be used for marine applications?
Indeed, stainless steel pipes possess the capability to be utilized in marine applications. Renowned for its ability to resist corrosion, stainless steel emerges as an optimal substance to employ within marine surroundings, perpetually exposed to saltwater and elevated humidity levels. By being resistant to both rust and corrosion, stainless steel pipes guarantee their robustness and enduring nature when employed in marine applications. In the marine industry, they find extensive usage for a multitude of purposes, including piping systems, exhaust systems, and structural components. Furthermore, stainless steel pipes exhibit the capacity to endure extreme temperatures and pressures, rendering them suitable for the arduous conditions frequently encountered in marine applications.
Q:Can stainless steel pipes be surface treated?
Yes, stainless steel pipes can be surface treated through various methods such as pickling, passivation, electropolishing, or coating to enhance their appearance, corrosion resistance, and durability.
Q:Are stainless steel pipes suitable for extreme temperatures?
Yes, stainless steel pipes are suitable for extreme temperatures. Stainless steel is known for its high temperature resistance and ability to withstand both low and high temperatures without losing its structural integrity or mechanical properties. It can handle extreme heat and cold, making it a reliable choice for various industrial applications, including those involving extreme temperature environments.
Q:What is the difference between seamless and seamless stainless steel pipes?
The difference between seamless and seamless stainless steel pipes lies in the manufacturing process and the composition of the material used. Seamless pipes are manufactured by extruding a solid billet through a piercing rod to create a hollow tube. This process eliminates the need for any welds or joints, resulting in a continuous and smooth pipe with no weak points. Seamless pipes are known for their strength, durability, and ability to withstand high-pressure and high-temperature applications. They are commonly used in industries such as oil and gas, petrochemical, and power generation. On the other hand, seamless stainless steel pipes are a specific type of seamless pipe that is made from stainless steel. Stainless steel is an alloy that contains a high percentage of chromium, which provides excellent corrosion resistance and high-temperature strength. This makes seamless stainless steel pipes suitable for applications where resistance to corrosion, oxidation, and heat is crucial, such as in the food and beverage, pharmaceutical, and chemical industries. In summary, while both seamless and seamless stainless steel pipes are manufactured through a seamless process, the difference lies in the material used. Seamless stainless steel pipes offer the added benefits of corrosion resistance and high-temperature strength due to their stainless steel composition.
Q:What are the different standards and specifications for stainless steel pipes?
There are several different standards and specifications for stainless steel pipes, which vary based on their intended use and the region in which they are being used. Some of the most common standards and specifications for stainless steel pipes include: 1. ASTM (American Society for Testing and Materials): ASTM A312/A312M is a standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes. This specification covers various grades of stainless steel pipes for high-temperature and general corrosive service. 2. ASME (American Society of Mechanical Engineers): ASME B36.19M is a standard specification for stainless steel pipes that covers the dimensions, wall thickness, and tolerances for both welded and seamless pipes. ASME B36.10M is another standard that specifies the dimensions and tolerances for seamless and welded stainless steel pipes. 3. EN (European Norms): EN 10216-5 is an European standard that specifies the technical delivery conditions for stainless steel seamless pipes for pressure purposes. EN 10217-7 is another European standard that covers welded stainless steel tubes for pressure purposes. 4. JIS (Japanese Industrial Standards): JIS G3459 is a standard specification for stainless steel pipes that are used for high-temperature service. JIS G3468 specifies the stainless steel pipes for general service. 5. DIN (Deutsches Institut für Normung): DIN EN 10216-5 is a German standard that specifies the technical delivery conditions for stainless steel seamless pipes for pressure purposes. DIN EN 10217-7 is another German standard that covers welded stainless steel tubes for pressure purposes. These are just a few examples of the numerous standards and specifications available for stainless steel pipes. It is important to consult the appropriate standard and specification based on the specific requirements and application of the stainless steel pipes to ensure proper performance and compliance with industry standards.
Q:What is the difference between 321 and 316 stainless steel pipes?
The main difference between 321 and 316 stainless steel pipes lies in their composition and applications. 321 stainless steel contains titanium, which helps improve its resistance to intergranular corrosion and high temperatures, making it suitable for applications in the aerospace and automotive industries. On the other hand, 316 stainless steel is more corrosion-resistant overall and is commonly used in marine environments or for applications involving exposure to chemicals or saltwater.
Q:What are the different types of fittings used with stainless steel pipes?
Some of the different types of fittings used with stainless steel pipes include couplings, elbows, tees, reducers, flanges, and valves. These fittings are designed to connect, redirect, or control the flow of fluids or gases in a stainless steel piping system.

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