STAINLESS STEEL BRIDGE STRUCTURE PIPE

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Specifications

1. Guaranteed material from established steel factories
2. Accordance with International standard
3. Attractive 304 316price

PRODUCT NAME: STAINLESS STEEL BRIDGE STRUCTURE PIPE

Name	STAINLESS STEEL BRIDGE STRUCTURE PIPE
Standard	ASTM, GB, JIS, DIN, EN, AISI
Material Grade	TP304 TP304L TP316 TP316L TP347 TP347H TP321 TP321H TP310 TP310S
	TP410 TP410S TP403
	S31803/S32205 S32750 S32760
Outer Diameter	Welded Pipe: single slit(Φ8mm-Φ630mm); girth(Φ630mm-Φ3000mm),
Thickness	Welded Pipe: single slit(0.5mm-25mm); girth(3mm-30mm)
Length	Commonly 5.8 Meters or 6.0 Meters, or as customers' request
Tolerance	According to the Standard, +/-10% Commonly.
Surface	180#, 320#, 400# Satin / Hairline, Bright Anneal, Pickle,400#, 500#, 600# or 800# Mirror finish
Application	Petrochemical industry, chemical fertilizer industry, oil refining industry, oil and gas industry, light industry and food industry, pulp and paper industry, energy and environmental industries.
Test	Flaring test, Flattening test, Bending Test, Hydraulic Test, Eddy Current test

Q: How do you join stainless steel pipes to other materials?: Joining stainless steel pipes to other materials can be achieved through several methods, depending on the specific application and requirements. Here are a few common techniques used: 1. Welding: Welding is the most common and effective method for joining stainless steel pipes to other materials. Different types of welding processes such as TIG (Tungsten Inert Gas) welding, MIG (Metal Inert Gas) welding, or stick welding can be used, depending on the material being joined and the desired strength of the joint. Welding provides a strong and durable bond between stainless steel pipes and other materials. 2. Flanges: Flanges are commonly used to join stainless steel pipes to other materials in applications that require easy disassembly or connection to different equipment. Flanges are typically made from materials such as carbon steel, cast iron, or even stainless steel itself. The flanges are bolted together, creating a secure joint that can be easily disconnected when needed. 3. Threaded connections: Stainless steel pipes can also be joined to other materials using threaded connections. This method is often used for smaller diameter pipes or when the pipes need to be easily removed or replaced. The threaded connections can be made using pipe fittings such as couplings, unions, or adapters, which have male and female threads that screw together to form a tight seal. 4. Compression fittings: Compression fittings are another option for joining stainless steel pipes to other materials. These fittings consist of a compression nut, a ferrule, and a body that houses the ferrule. The ferrule is compressed onto the pipe, creating a tight seal when the compression nut is tightened. Compression fittings provide a reliable and leak-free joint between stainless steel pipes and other materials. 5. Mechanical connectors: In some cases, mechanical connectors can be used to join stainless steel pipes to other materials. These connectors typically involve clamping or fastening mechanisms that secure the pipes together without the need for welding or threading. Mechanical connectors can be a suitable option in situations where disassembly and reassembly are required. It is important to consider the specific application, material compatibility, and the required strength and durability of the joint when selecting the appropriate method to join stainless steel pipes to other materials. Consulting with a professional or referring to industry standards and guidelines is recommended to ensure a proper and reliable connection.

Q: Are stainless steel pipes suitable for oil and gas applications?: Indeed, oil and gas applications find stainless steel pipes to be appropriate. Stainless steel boasts exceptional corrosion resistance, rendering it the perfect choice for the conveyance and storage of oil and gas, substances that frequently harbor corrosive components. Additionally, stainless steel pipes exhibit remarkable strength and durability, guaranteeing their ability to endure high-pressure circumstances and unforgiving surroundings. Moreover, stainless steel proves effortless to cleanse and uphold, thus diminishing the likelihood of contamination within oil and gas operations. All in all, stainless steel pipes emerge as a dependable and economically viable option for oil and gas applications.

Q: Can stainless steel pipes be used for vacuum systems?: Yes, stainless steel pipes can be used for vacuum systems. Stainless steel is a popular choice for vacuum applications due to its high strength, corrosion resistance, and low outgassing properties. It can withstand high vacuum levels and maintain its structural integrity under pressure. Stainless steel pipes are commonly used in various industries such as aerospace, semiconductor manufacturing, and scientific research for creating vacuum systems. Additionally, stainless steel pipes can be easily cleaned and maintained, making them a reliable and long-lasting option for vacuum applications.

Q: What does "stainless steel pipe" DN mean?: Nominal diameter is the size of all piping accessories in the piping system. The nominal diameter is a convenient round integer for reference and is not strictly related to the processing size. The nominal diameter follows the letter "DN" followed by a number sign.

Q: Is stainless steel flexible enough for plumbing applications?: Yes, stainless steel is flexible enough for plumbing applications. Stainless steel pipes and fittings are known for their durability and strength, but they also offer a certain degree of flexibility. This flexibility allows for easier installation in various plumbing systems, including those with complex layouts or tight spaces. Stainless steel pipes can be bent and shaped without compromising their structural integrity, making them suitable for both residential and commercial plumbing projects. Additionally, stainless steel is highly resistant to corrosion, which is crucial for plumbing applications where exposure to water and other corrosive substances is common. Overall, stainless steel's combination of strength, durability, and flexibility makes it an excellent choice for plumbing applications.

Q: What is the welding procedure for stainless steel pipes?: To achieve a strong and durable joint, stainless steel pipes undergo a specific welding procedure. Typically, the process entails several crucial steps. To begin, it is essential to choose the appropriate welding technique for stainless steel, which is often Tungsten Inert Gas (TIG) welding due to its ability to produce precise and clean welds. Before commencing the welding process, it is necessary to thoroughly clean the stainless steel pipes to eliminate any contaminants like dirt, grease, or oxidation. This can be accomplished using either a degreasing agent or a stainless steel wire brush. Following the cleaning process, the pipes must be aligned and fitted together correctly. It is crucial to ensure that the gap between the pipes remains consistent and even throughout the joint. This can be achieved by temporarily securing the pipes in place using clamps or tack welding. Once the pipes are properly aligned, the TIG welding process can commence. This involves using a TIG torch to create an electric arc between a tungsten electrode and the stainless steel pipes. The intense heat generated by the arc melts the edges of the pipes, creating a fusion between the base metal and the filler material. During the welding process, it is vital to maintain a stable arc length and control the welding speed to achieve a uniform weld bead. Regulating the heat input and controlling the welding parameters can be accomplished by utilizing a foot pedal or a remote control. Throughout the welding process, it is important to safeguard the weld area from contamination. This can be achieved by using shielding gas, such as argon, to establish an inert atmosphere around the weld zone. The shielding gas prevents the weld area from reacting with oxygen and other atmospheric elements that could result in weld defects. Upon completing the welding, it is advisable to perform post-weld cleaning and inspection. This involves removing any slag or spatter that may have formed during the welding process and visually examining the weld for any defects like cracks or discontinuities. In summary, the welding procedure for stainless steel pipes involves cleaning the pipes, aligning and fitting them together, TIG welding with the appropriate arc length and welding speed, shielding the weld area with inert gas, and conducting post-weld cleaning and inspection. By following these steps, a dependable and sturdy weld joint can be achieved for stainless steel pipes.

Q: Can stainless steel pipes be insulated with polysulfone?: Stainless steel pipes can indeed be insulated with polysulfone. Polysulfone is a highly durable and heat-resistant material that is commonly used for insulation purposes. It has excellent thermal insulation properties, making it suitable for insulating stainless steel pipes in various applications. Additionally, polysulfone is known for its resistance to chemicals, making it a suitable choice for environments where corrosion or chemical exposure is a concern. However, it is important to ensure that the polysulfone insulation is compatible with the specific requirements and temperatures of the stainless steel pipes being insulated. Consulting with a professional or referring to the manufacturer's guidelines can help determine the suitability of using polysulfone insulation for stainless steel pipes in a particular application.

Q: What is the difference between ERW and EFW stainless steel pipes?: Stainless steel pipes can be manufactured using two different methods: ERW (Electric Resistance Welded) and EFW (Electric Fusion Welded). The primary distinction between these two methods is in the welding process employed. In the case of ERW stainless steel pipes, a flat sheet of steel is rolled into a cylindrical shape and then joined together at the edges using a high-frequency electrical current. This process yields a seamless and robust joint, ensuring the pipe's resistance to corrosion and a smooth interior surface. ERW pipes find extensive use in industries such as oil and gas, where durability and strength are crucial. In contrast, EFW stainless steel pipes are produced by melting the edges of two steel pieces together under the application of heat and pressure. This fusion welding process creates a continuous weld throughout the entire length of the pipe, eliminating the need for additional welding. EFW pipes are renowned for their exceptional corrosion resistance and are commonly utilized in environments characterized by high pressure and temperature, such as chemical plants and power generation facilities. To summarize, the primary distinction between ERW and EFW stainless steel pipes lies in the welding process. ERW pipes are formed by welding the edges of a flat sheet, whereas EFW pipes are created by fusing the edges of two steel pieces. Both methods offer distinct advantages and find application in different industries depending on the specific project requirements.

Q: Why can't stainless steel be put together with carbon steel tube?: Electrolyte: the contact area of two metals is covered with electrolyte or submerged. The iron in the carbon tube loses electrons to form ions into the solution, and the electrons on the surface of the stainless steel tubes are taken away by the corrosive agents in the electrolyte (such as oxygen in the air). Electrolytes become ionic channels.

Q: Comparison of ring type connection and argon arc welding of stainless steel pipe: Characteristics of argon arc welding of stainless steel pipe:1. Permanent structure, reliable quality;2. Reduce the number of parts used;3. The construction technology is relatively complicated.

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