• STAINLESS STEEL PIPES 304L 316L materail System 1
STAINLESS STEEL PIPES 304L 316L materail

STAINLESS STEEL PIPES 304L 316L materail

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Description:

Stainless Steel Pipe

Material:

304 321 316 310

Packing:

In bundle

MOQ:

5 TONS

Comparison of standardized steels

EN-standard

Steel no. k.h.s DIN

EN-standard

Steel name

SAE gradeUNS
1.4109X65CrMo14440AS44002
1.4112X90CrMoV18440BS44003
1.4125X105CrMo17440CS44004
440FS44020
1.4016X6Cr17430S43000
1.4408G-X 6 CrNiMo 18-10316
1.4512X6CrTi12409S40900
410S41000
1.4310X10CrNi18-8301S30100
1.4318X2CrNiN18-7301LN
1.4307X2CrNi18-9304LS30403
1.4306X2CrNi19-11304LS30403
1.4311X2CrNiN18-10304LNS30453
1.4301X5CrNi18-10304S30400
1.4948X6CrNi18-11304HS30409
1.4303X5CrNi18-12305S30500
X5CrNi30-9312
1.4541X6CrNiTi18-10321S32100
1.4878X12CrNiTi18-9321HS32109
1.4404X2CrNiMo17-12-2316LS31603
1.4401X5CrNiMo17-12-2316S31600
1.4406X2CrNiMoN17-12-2316LNS31653
1.4432X2CrNiMo17-12-3316LS31603
1.4435X2CrNiMo18-14-3316LS31603
1.4436X3CrNiMo17-13-3316S31600
1.4571X6CrNiMoTi17-12-2316TiS31635
1.4429X2CrNiMoN17-13-3316LNS31653
1.4438X2CrNiMo18-15-4317LS31703
1.4362X2CrNi23-42304S32304
1.4462X2CrNiMoN22-5-32205S31803/S32205
1.4539X1NiCrMoCu25-20-5904LN08904
1.4529X1NiCrMoCuN25-20-7N08926
1.4547X1CrNiMoCuN20-18-7254SMO

S31254

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.

Architecture[edit]

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.

Bridges[edit]

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.

Other[edit]

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.

Aircraft

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.

Jewelry

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

Q: How do you calculate the expansion and contraction of stainless steel pipes?
To calculate the expansion and contraction of stainless steel pipes, you need to consider the coefficient of thermal expansion (CTE) of the material and the change in temperature. The formula for calculating the thermal expansion or contraction of a stainless steel pipe is: ΔL = L * CTE * ΔT Where: ΔL is the change in length of the pipe L is the original length of the pipe CTE is the coefficient of thermal expansion of stainless steel ΔT is the change in temperature By plugging in the values for length, CTE, and temperature change into this formula, you can determine the expansion or contraction of the stainless steel pipe.
Q: Can stainless steel pipes be insulated with asbestos?
No, stainless steel pipes should not be insulated with asbestos. Asbestos is a hazardous material that has been linked to serious health risks, including lung diseases and cancer. It is important to use safe and non-toxic insulation materials when insulating pipes to protect both the environment and human health.
Q: Can stainless steel pipes be inspected for defects?
Yes, stainless steel pipes can be inspected for defects. Various non-destructive testing methods such as visual inspection, ultrasonic testing, radiography, and magnetic particle inspection can be used to identify and evaluate any potential defects in the pipes. These inspections help ensure the integrity and quality of stainless steel pipes for various applications.
Q: 304 stainless steel will rust it?
General stainless steel chromium content is generally not less than 12%, high even up to 18%. When chromium is added to the steel, the properties of the steel can be changed. For example, the molecular structure of the steel is more uniform, and the surface of the steel is easy to produce a layer of dense oxide protective film, which greatly improves the corrosion resistance of the stainless steel. Therefore, stainless steel can resist fire, water, acid, alkali and various solutions to its corrosion, not rust. The scientists found that the internal structure of the steel is more uniform, various components more closely linked to the corrosion of the more difficult the invasion, also attached to the surface with a layer of oxide film, like iron and steel to wear armor, was not naturally easy to rust.
Q: How do you prevent backflow in stainless steel pipes?
There are several essential measures that can be taken to prevent backflow in stainless steel pipes. Firstly, the installation of a backflow preventer is crucial. This mechanical device ensures that water flows in only one direction, effectively preventing any backflow. Various types of backflow preventers, such as check valves, double check valves, and reduced pressure zone devices, are available. The selection of the appropriate one depends on the specific system requirements and local codes and regulations. Regular maintenance and inspection of the backflow preventer are also important. It is necessary to ensure that the device is functioning properly and promptly address any signs of wear or damage. Regular maintenance may involve cleaning and replacing worn-out parts to maintain optimal performance. Maintaining proper pressure in the stainless steel pipes is another preventive measure. High pressure can lead to water flowing in the opposite direction, causing backflow. By installing pressure regulators or pressure-reducing valves, the water pressure can be controlled and kept within the recommended range. Incorporating air gaps into the system provides an additional layer of protection against backflow. Air gaps create a physical separation between the water source and the point of use, eliminating any direct connection that could allow backflow to occur. Proper system design is also crucial in preventing backflow. This includes ensuring correct sizing of the stainless steel pipes, appropriate slope, and proper connections. Additionally, locating the backflow preventer in an easily accessible area facilitates regular maintenance and inspection. By implementing these preventive measures, the risk of backflow in stainless steel pipes can be significantly reduced. This promotes the safe and efficient flow of water in the system.
Q: Mechanical properties of stainless steel tubes
Strength (tensile strength, yield strength) the strength of stainless steel is determined by various factors, but the most important and basic factor is the addition of different chemical factors, mainly metallic elements. Different types of stainless steel have different strength characteristics due to their differences in chemical composition.
Q: What are the common standards for stainless steel pipes?
Stainless steel pipes have varying common standards depending on the specific application and industry in which they are used. However, there are several widely recognized standards that are commonly employed in the manufacturing and specification of these pipes. One of the most extensively used standards is ASTM International, which is responsible for establishing standards for various materials, including stainless steel. ASTM A312/A312M serves as the standard specification for austenitic stainless steel pipes that are seamless, welded, and heavily cold worked. This comprehensive standard encompasses a wide range of pipe sizes and grades, including TP304, TP316, TP321, and more. Another standard frequently referenced is the American National Standards Institute (ANSI) standards. ANSI B36.19 specifically delineates the dimensions, tolerances, and materials for stainless steel pipes. This standard covers both seamless and welded stainless steel pipes, offering a multitude of sizes and schedules. Apart from these standards, there are also industry-specific standards. For instance, the American Petroleum Institute (API) has established standards like API 5L, which are specifically designed for line pipes used in the oil and gas industry. These standards outline the requirements for materials, dimensions, and testing of stainless steel pipes utilized in specific applications. Other standards organizations, including the International Organization for Standardization (ISO) and the European Committee for Standardization (EN), also contribute their own standards for stainless steel pipes. ISO 1127, for instance, specifies the dimensions and tolerances for stainless steel pipes used for general purposes. It is important to acknowledge that these standards are continuously updated and revised to align with technological advancements and industry requirements. Therefore, it is crucial to refer to the latest versions of these standards to ensure compliance and maintain the quality of stainless steel pipe manufacturing and usage.
Q: Can stainless steel pipes be used for nuclear waste storage?
Stainless steel pipes can indeed be used for nuclear waste storage. Stainless steel is highly resistant to corrosion, making it an ideal material for containing and transporting hazardous materials such as nuclear waste. The properties of stainless steel, including its durability, strength, and ability to withstand extreme temperatures, make it suitable for long-term storage of radioactive waste. Additionally, stainless steel is non-reactive and does not leach out harmful substances, ensuring the integrity of the stored waste. It is important, however, to ensure that the stainless steel used meets the specific requirements and standards set for nuclear waste storage to ensure maximum safety and containment.
Q: What is the difference between 17-4 and 316 stainless steel pipes?
The main difference between 17-4 and 316 stainless steel pipes lies in their composition and properties. 17-4 stainless steel, also known as SAE type 630, is a precipitation-hardening stainless steel that contains approximately 17% chromium and 4% nickel. It also contains small amounts of copper, niobium, and tantalum. The addition of these elements enables 17-4 stainless steel to undergo a heat treatment process, known as precipitation hardening, which increases its strength and hardness. This makes it suitable for applications that require high strength and good corrosion resistance, such as in aerospace and defense industries. However, it may not have the best resistance to certain corrosive environments compared to other stainless steels. On the other hand, 316 stainless steel is an austenitic stainless steel that contains approximately 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. This composition provides excellent corrosion resistance, particularly in chloride-containing environments such as marine environments or coastal areas. 316 stainless steel is also known for its good weldability and formability, making it a popular choice in various industries including food processing, pharmaceuticals, and chemical processing. In summary, the primary difference between 17-4 and 316 stainless steel pipes lies in their composition and properties. 17-4 stainless steel offers higher strength and hardness through precipitation hardening, while 316 stainless steel provides superior corrosion resistance, especially in chloride-containing environments. The choice between the two will depend on the specific requirements of the application, with considerations for strength, corrosion resistance, and other factors.
Q: Are stainless steel pipes resistant to chemical corrosion?
Stainless steel pipes possess resistance against chemical corrosion. This attribute is a result of the abundant chromium content within stainless steel, which generates a safeguarding oxide layer on the pipe's surface. This layer acts as a barrier, effectively obstructing chemical substances from interacting with the steel beneath and inducing corrosion. Moreover, stainless steel pipes exhibit resistance against alternative corrosion types, including rusting, thereby establishing their widespread utilization across industrial, commercial, and residential sectors where exposure to chemical substances is anticipated.

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