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Stainless Steel Pipe


304 321 316 310


In bundle



Comparison of standardized steels


Steel no. k.h.s DIN


Steel name

SAE gradeUNS
1.4408G-X 6 CrNiMo 18-10316


Stainless steel’s resistance to corrosion and staining, low maintenance and familiar lustre make it an ideal material for many applications. There are over 150 grades of stainless steel, of which fifteen are most commonly used. The alloy is milled into coils, sheets, plates, bars, wire, and tubing to be used in cookware, cutlery, household hardware, surgical instruments, major appliances, industrial equipment (for example, in sugar refineries) and as an automotive and aerospace structural alloy and construction material in large buildings. Storage tanks and tankers used to transport orange juice and other food are often made of stainless steel, because of its corrosion resistance. This also influences its use in commercial kitchens and food processing plants, as it can be steam-cleaned and sterilized and does not need paint or other surface finishes.

Stainless steel is used for jewelry and watches with 316L being the type commonly used for such applications. It can be re-finished by any jeweler and will not oxidize or turn black.

Some firearms incorporate stainless steel components as an alternative to blued or parkerized steel. Some handgun models, such as the Smith & Wesson Model 60 and the Colt M1911 pistol, can be made entirely from stainless steel. This gives a high-luster finish similar in appearance to nickel plating. Unlike plating, the finish is not subject to flaking, peeling, wear-off from rubbing (as when repeatedly removed from a holster), or rust when scratched.


Main article: Architectural steel

Stainless steel is used for buildings for both practical and aesthetic reasons. Stainless steel was in vogue during the art deco period. The most famous example of this is the upper portion of the Chrysler Building (pictured). Some diners and fast-food restaurants use large ornamental panels and stainless fixtures and furniture. Because of the durability of the material, many of these buildings retain their original appearance.

Type 316 stainless is used on the exterior of both the Petronas Twin Towers and the Jin Mao Building, two of the world's tallest skyscrapers.[17]

The Parliament House of Australia in Canberra has a stainless steel flagpole weighing over 220 tonnes (240 short tons).

The aeration building in the Edmonton Composting Facility, the size of 14 hockey rinks, is the largest stainless steel building in North America.


Monuments and sculptures[edit]

  • The Unisphere, constructed as the theme symbol of the 1964-5 World's Fair in New York City, is constructed of Type 304L stainless steel as a sphere with a diameter of 120 feet, or 36.57 meters.

  • The Gateway Arch (pictured) is clad entirely in stainless steel: 886 tons (804 metric tonnes) of 0.25 in (6.4 mm) plate, #3 finish, type 304 stainless steel.[19]

  • The United States Air Force Memorial has an austenitic stainless steel structural skin.

  • The Atomium in Brussels, Belgium was renovated with stainless-steel cladding in a renovation completed in 2006; previously the spheres and tubes of the structure were clad in aluminium.

  • The Cloud Gate sculpture by Anish Kapoor, in Chicago US.

  • The Sibelius monument in Helsinki, Finland, is made entirely of stainless steel tubes.

  • The Man of Steel (sculpture) under construction in Rotherham, England.


Automotive bodies

The Allegheny Ludlum Corporation worked with Ford on various concept cars with stainless steel bodies from the 1930s through the 1970s, as demonstrations of the material's potential. The 1957 and 1958 Cadillac Eldorado Brougham had a stainless steel roof. In 1981 and 1982, the DeLorean DMC-12 production automobile used stainless steel body panels over a glass-reinforced plasticmonocoque. Intercity buses made by Motor Coach Industries are partially made of stainless steel. The aft body panel of the Porsche Cayman model (2-door coupe hatchback) is made of stainless steel. It was discovered during early body prototyping that conventional steel could not be formed without cracking (due to the many curves and angles in that automobile). Thus, Porsche was forced to use stainless steel on the Cayman.

Passenger rail cars

Rail cars have commonly been manufactured using corrugated stainless steel panels (for additional structural strength). This was particularly popular during the 1960s and 1970s, but has since declined. One notable example was the early Pioneer Zephyr. Notable former manufacturers of stainless steel rolling stock included the Budd Company (USA), which has been licensed to Japan's Tokyu Car Corporation, and the Portuguese company Sorefame. Many railcars in the United States are still manufactured with stainless steel, unlike other countries who have shifted away.


Budd also built an airplane, the Budd BB-1 Pioneer, of stainless steel tube and sheet, which is on display at the Franklin Institute.

The American Fleetwings Sea Birdamphibious aircraft of 1936 was also built using a spot-welded stainless steel hull.

The Bristol Aeroplane Company built the all-stainless steel Bristol 188 high-speed research aircraft, which first flew in 1963.

The use of stainless steel in mainstream aircraft is hindered by its excessive weight compared to other materials, such as aluminum.


Valadium, a stainless steel and 12% nickel alloy is used to make class and military rings. Valadium is usually silver-toned, but can be electro-charged to give it a gold tone. The gold tone variety is known as Sun-lite Valadium

To calculate the flow rate of stainless steel pipes, you can use the Hazen-Williams equation or the Darcy-Weisbach equation. The Hazen-Williams equation is commonly used for water flow in commercial and industrial applications, while the Darcy-Weisbach equation is more general and can be used for various fluids. For the Hazen-Williams equation, the flow rate (Q) can be calculated using the formula: Q = 0.849 * C * (D^2.63) * (h^0.54) Where: Q = Flow rate in gallons per minute (GPM) C = Hazen-Williams coefficient (an empirical value that depends on the pipe material and condition) D = Inside diameter of the pipe in inches h = Head loss or pressure drop in feet For the Darcy-Weisbach equation, the flow rate (Q) can be calculated using the formula: Q = (π/4) * (D^2) * V Where: Q = Flow rate in cubic meters per second (m³/s) D = Inside diameter of the pipe in meters V = Velocity of the fluid in meters per second (m/s) To determine the velocity (V), you can use the formula: V = Q / ((π/4) * (D^2)) These equations provide a theoretical estimation of the flow rate in stainless steel pipes. However, it is important to note that other factors such as pipe roughness, fluid viscosity, and system pressure can also affect the flow rate. Therefore, it is recommended to consult relevant engineering standards, industry guidelines, or work with a qualified engineer for accurate calculations.
Q:304 stainless steel tube with the diameter of 25*2-3 is what mean
This is according to the "water drawing standards" (GBT50106-2001) in 2.4.2-2 seamless steel pipe, welded steel pipe (straight or spiral seam), brass, stainless steel pipe, pipe diameter should be D diameter * thickness representation (such as D108 * 4 and D159 * 4.5); and the provisions of the habit of acting D with seamless pipe diameter.
Various stainless steel pipe valves are available, each serving specific purposes and industries. Some commonly utilized types include: 1. Ball valves: These valves control fluid flow with a rotating ball featuring a central hole. They possess excellent sealing capabilities, making them suitable for high-pressure applications. 2. Gate valves: Flow control is achieved through a sliding gate in gate valves. They are commonly employed in situations that require a straight-line flow with minimal pressure drop. 3. Globe valves: Globe valves consist of a spherical body and a regulating disc that moves vertically. They offer effective throttling abilities and are often utilized in applications that demand precise fluid flow control. 4. Check valves: These valves permit fluid to flow in only one direction and prevent backflow. They are frequently installed in piping systems to prevent damage caused by reverse flow. 5. Butterfly valves: Butterfly valves utilize a rotating disc within the pipe to regulate flow. Their lightweight, compact nature and cost-effectiveness make them suitable for a wide array of applications. 6. Needle valves: Needle valves possess a slender, tapered stem that allows for precise control over flow rates. They are commonly found in applications that necessitate accurate flow regulation, such as laboratory or instrumentation systems. 7. Pressure relief valves: These valves automatically release excess pressure from a system when it surpasses a certain threshold. They are crucial for maintaining the safety and integrity of piping systems. These examples represent only a fraction of the stainless steel pipe valves available. The choice of valve depends on factors such as fluid type, pressure, temperature, and specific application requirements. It is important to consult with a valve expert or engineer to select the most suitable valve for your specific needs.
Stainless steel pipes have the capability to be utilized for food processing equipment. The food industry highly favors stainless steel due to its ability to resist corrosion, its durability, and its hygienic properties. It does not interact with food or beverages, guaranteeing the absence of contamination or alteration of the product. In addition, stainless steel pipes are easily cleaned and maintained, making them an ideal option for use in food processing equipment where cleanliness and food safety are crucial. Furthermore, stainless steel has the capacity to endure high temperatures and pressures, which are often necessary in food processing operations. In conclusion, stainless steel pipes are a suitable choice for food processing equipment and are extensively employed in the industry.
Yes, stainless steel pipes can be used for swimming pool installations. Stainless steel is a highly durable and corrosion-resistant material, making it suitable for use in swimming pool environments where there is constant exposure to water and chemicals. Stainless steel pipes are known for their longevity and ability to withstand the harsh conditions of a swimming pool, including chlorinated water and high temperatures. Additionally, stainless steel pipes are easy to clean and maintain, reducing the risk of contamination or blockages in the pool system. Overall, stainless steel pipes are a reliable choice for swimming pool installations due to their strength, resistance to corrosion, and longevity.
Q:What's the difference between cold drawn steel tube and hot rolled steel tube?
Hot rolling is relative to cold rolling, cold rolling is performed under recrystallization temperature, while hot rolling is rolling above recrystallization temperature.Seamless steel pipe, hot-rolled and cold-rolled (DIAL) seamless steel pipe two categories.Hot rolled steel tubes are divided into ordinary steel tubes, low and medium pressure boiler tubes, high pressure boiler tubes, alloy steel pipes, stainless steel pipes, oil cracking pipes, geological steel pipes and other steel pipes, etc..
Yes, stainless steel pipes can be used for sewage systems. Stainless steel is a highly durable and corrosion-resistant material, making it suitable for various applications, including sewage systems. Stainless steel pipes are capable of withstanding the harsh elements found in sewage, such as corrosive chemicals, high temperatures, and abrasive solids. Additionally, stainless steel pipes have a smooth surface, which minimizes the risk of clogs and blockages in the sewage system. This makes stainless steel pipes a reliable and long-lasting choice for sewage systems, ensuring efficient and effective waste disposal.
Stainless steel pipes are measured using two main parameters: outer diameter (OD) and wall thickness. The outer diameter refers to the measurement of the pipe's outer circumference, while the wall thickness indicates the thickness of the pipe's walls. These measurements are crucial in determining the suitability of the pipe for a specific application and ensuring compatibility with fittings and connectors. The dimensions of stainless steel pipes are typically expressed in millimeters or inches, and they can vary depending on the specific requirements of the project or industry standards. Accurate measurement is important to ensure proper fitting and functionality of the stainless steel pipes in various applications, such as plumbing, construction, or industrial processes.
The main difference between 347 and 321 stainless steel pipes lies in their composition and intended use. 347 stainless steel contains a higher amount of niobium, which enhances its resistance to intergranular corrosion, making it suitable for high-temperature applications. On the other hand, 321 stainless steel has titanium as a stabilizing element, providing improved resistance against sensitization during welding.
Yes, stainless steel pipes can be used for pulp and paper mills. Stainless steel is highly resistant to corrosion and can withstand the harsh chemicals and high temperatures commonly found in pulp and paper mills. Additionally, stainless steel is durable and long-lasting, making it a suitable choice for such industrial applications.

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