304 /316/321stainless steel seamless pipe

304 /316/321stainless steel seamless pipe System 1

304 /316/321stainless steel seamless pipe

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 100 kg

Supply Capability:: 1000000 kg/month

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Item specifice

Standard:

AISI,ASTM,JIS,GB,BS,DIN,API,EN

Technique:

Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring

Shape:

U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ

Surface Treatment:

Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated

Steel Grade:

Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)

Certification:

API,CE,RoHS,IBR,BV,ISO,SGS,UL,BSI

Thickness:

0.1-100mm

Length:

1-12

Outer Diameter:

1-500

Net Weight:

100000

Stainless steel pipe is a hollow long round steel, widely used in petroleum, chemical, medical, food, light industry, machinery, instrument, such as industrial pipeline and mechanical structure parts, etc. In addition, in the bending and torsional strength phase, the weight is lighter, it is widely used in the manufacture of machinery parts and engineering structures. Also commonly used for the production of various kinds of conventional weapons, barrel, shells, etc. We also supply stainless steel parts, such as the three links, elbow, flange etc. Looking forward to establishing a long-term business relationship with you.

stainless pipe 202-1

Item	Description
Product name	Stainless steel pipe/tube
Material	201 202 304 304L 316 316L 321 309 310 310S 430 410
Thickness	0.5mm-100mm
Outer diameter	10mm-1000mm
Length	6meters or as per customized
Technical treatment	Cold rolled and Hot rolled
Application	decorative pipe, construction pipe, mechanical pipe, stove heat exchanger tubes, food hygiene pipe, water and liquid delivery
Standard	ASTM GB KS AISI SAE AWS ASME BS DIN CAS API KR NK LR AB JIS
Certification	BV ISO SGS API WSF
Dimension(LWH)	0.5mm6mm6000mm-8mm610mm6000mm
Trade terms	Pay terms: L/C T/T west union
Trade terms	Price terms: FOB CIF EXW CFR

Test	Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT
Chemical Composition		201	202	304	316	430
	C	≤0.15	≤0.15	≤0.08	≤0.08	≤0.12
	Si	≤1.00	≤1.00	≤1.00	≤1.00	≤1.00
	Mn	5.5-7.5	7.5-10	≤2.00	≤2.00	≤1.00
	P	≤0.06	≤0.06	≤0.045	≤0.045	≤0.040
	S	≤0.03	≤0.03	≤0.030	≤0.030	≤0.030
	Cr	16-18	17-19	18-20	16-18	16-18
	Ni	3.5-5.5	4.0-6.0	8.0-10.5	10.0-14.0
	Mo				2.0-3.0
Mechanical Property	Material Item		201	202	304	316
	Tensile Strength		≥535	≥520	≥520	≥520
	Yield Strength		≥245	≥205	≥205	≥205
	Extension		≥30%	≥30%	≥35%	≥35%
	Hardness (HV)		< 253	< 253	< 200	< 200

Q:How do you prevent noise transmission in stainless steel pipes?: There exist various effective techniques for preventing noise transmission in stainless steel pipes. 1. Insulation: An effective and commonly used method for preventing noise transmission involves insulating the stainless steel pipes. To absorb and dampen sound waves, insulation materials like mineral wool, fiberglass, or foam can be wrapped around the pipes. This helps in reducing the noise transmitted through the pipes. 2. Vibration isolation: Noise transmission can also be minimized by utilizing vibration isolation techniques. This method entails the installation of flexible connectors or rubber mounts between the pipe and its supports. These isolators absorb vibrations and prevent them from being transmitted as noise through the pipe. 3. Anti-vibration pads: Another approach to prevent noise transmission is the use of anti-vibration pads. These pads are placed beneath the pipe supports to absorb vibrations and prevent their transmission as noise. They act as a barrier between the pipe and its support, significantly reducing noise transmission. 4. Acoustic lagging: The technique of applying a noise-reducing material directly onto the surface of the stainless steel pipes is known as acoustic lagging. This material, often composed of mass-loaded vinyl or rubber, acts as a barrier to block the transmission of sound waves. It effectively reduces noise transmission and can be combined with insulation for improved results. 5. Proper pipe routing: Minimizing noise transmission can be achieved by ensuring proper pipe routing. Pipes should be installed in a manner that reduces contact or proximity to other structures or surfaces that can amplify noise. Additionally, avoiding sharp bends or angles in the pipe can help in reducing noise transmission. It is important to consider that the choice of method may vary based on the specific noise issue and environment. Seeking guidance from a professional acoustic consultant or engineer is recommended to determine the most suitable solution for a particular situation.

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:What is the difference between seamless and spiral welded stainless steel pipes?: The main difference between seamless and spiral welded stainless steel pipes lies in their manufacturing process and structural characteristics. Seamless stainless steel pipes are produced by piercing a solid billet or bar of stainless steel and then rolling it into a hollow shape. This process does not involve any welding and results in a smooth and seamless pipe. Seamless pipes are typically used in high-pressure and high-temperature applications where strength and corrosion resistance are crucial. They are known for their uniformity, precision, and ability to withstand extreme conditions. On the other hand, spiral welded stainless steel pipes are manufactured by continuously rolling and welding a coiled strip of stainless steel. The strip is formed into a spiral shape and then welded along the seam. This process allows for the production of large diameter pipes and is more cost-effective compared to seamless pipes. Spiral welded pipes are commonly used for low-pressure and low-temperature applications, such as water and gas transportation, as they are less resistant to internal pressure and have a rougher surface compared to seamless pipes. In terms of structural characteristics, seamless stainless steel pipes have a more uniform and consistent wall thickness, resulting in enhanced strength and durability. They also have better dimensional accuracy and smoother internal surfaces, which reduces friction and improves flow efficiency. This makes seamless pipes suitable for industries such as oil and gas, petrochemicals, and power generation, where reliability and performance are paramount. On the other hand, spiral welded stainless steel pipes have a varying wall thickness due to the welding process, which can result in a weaker pipe compared to seamless ones. However, spiral welded pipes have the advantage of being able to withstand higher external pressures and bending forces due to their spiral shape. They are also easier to manufacture and can be produced in longer lengths, reducing the need for additional joints and connections. In conclusion, the choice between seamless and spiral welded stainless steel pipes depends on the specific requirements of the application. Seamless pipes offer superior strength, precision, and corrosion resistance, making them suitable for high-pressure and high-temperature applications. On the other hand, spiral welded pipes are more cost-effective, can be produced in large diameters, and are suitable for low-pressure and low-temperature applications.

Q:Can stainless steel pipes be used for brewery and beverage industry applications?: Yes, stainless steel pipes can be used for brewery and beverage industry applications. Stainless steel is highly resistant to corrosion, making it suitable for handling liquids and beverages. It is also easy to clean and maintain, ensuring the hygienic requirements of the industry are met. Stainless steel pipes are commonly used in these industries due to their durability, longevity, and compatibility with various fluids.

Q:What is the maximum wall thickness for stainless steel pipes?: The maximum wall thickness for stainless steel pipes can vary depending on various factors such as the specific grade of stainless steel, the manufacturing process, and the intended application. However, in general, stainless steel pipes typically have a maximum wall thickness of around 40 millimeters.

Q:Are stainless steel pipes suitable for offshore platforms?: Offshore platforms can indeed utilize stainless steel pipes effectively. Stainless steel is a material that resists corrosion and can endure the harsh marine environment, including exposure to seawater, salt, and other corrosive substances. It is capable of withstanding oxidation and pitting, which are common problems in offshore settings. The use of stainless steel pipes in offshore platforms is widespread, serving various purposes such as fluid and gas transportation, structural support, and protection. These pipes are renowned for their exceptional strength, durability, and reliability, which are pivotal in offshore operations that prioritize safety. Moreover, stainless steel pipes necessitate minimal maintenance, reducing the need for frequent inspections and repairs. This advantage is particularly beneficial in offshore environments where accessibility and upkeep can be challenging due to remote locations and severe weather conditions. Aside from its corrosion resistance, stainless steel also possesses desirable traits such as heat resistance, fire resistance, and excellent mechanical properties. These characteristics make stainless steel pipes an optimal choice for offshore platforms, as they can withstand high temperatures, fire hazards, and mechanical stress. Overall, stainless steel pipes offer a cost-effective and long-lasting solution for offshore platforms, ensuring the safety, reliability, and efficiency of operations in these demanding environments.

Q:How are stainless steel pipes different from galvanized pipes?: Stainless steel pipes and galvanized pipes are two types of piping materials that differ in composition and properties. The main distinction between them lies in their corrosion resistance capabilities. Stainless steel pipes exhibit high resistance to corrosion due to the presence of chromium, which forms a protective layer on the pipe's surface. This makes them ideal for applications in corrosive environments, such as the chemical industry or marine applications. In contrast, galvanized pipes are steel pipes coated with a layer of zinc to prevent rusting. While this zinc coating provides some degree of protection against corrosion, it is not as durable or long-lasting as the protective layer formed on stainless steel pipes. Galvanized pipes are commonly used in plumbing, water distribution systems, and outdoor applications where corrosion resistance is necessary but not critical. Another difference between the two types of pipes is their appearance. Stainless steel pipes have a sleek and shiny appearance, often preferred for aesthetic reasons or in applications where appearance matters. On the other hand, galvanized pipes have a dull gray color due to the zinc coating. In terms of cost, galvanized pipes are generally more affordable than stainless steel pipes. However, the initial cost of stainless steel pipes can be justified by their longevity and superior corrosion resistance, which ultimately result in lower maintenance and replacement costs over time. When choosing between stainless steel pipes and galvanized pipes, it is important to consider the specific requirements of your project or application. Factors such as the environment, expected lifespan, and budgetary constraints should be taken into account to ensure the right choice is made.

Q:What is the maximum length of a stainless steel pipe?: The maximum length of a stainless steel pipe can vary depending on factors such as the manufacturing process, diameter, and application. However, commonly available stainless steel pipes are typically produced in standard lengths of 20 feet (6.1 meters) or 40 feet (12.2 meters).

Q:What is the difference between seamless and extruded stainless steel pipes?: Seamless and extruded stainless steel pipes are utilized in various industries and applications, but they differ in several ways. 1. Manufacturing Process: The manufacturing process distinguishes seamless and extruded stainless steel pipes. Seamless pipes are formed through hot rolling or hot extrusion, where a heated cylindrical billet is pushed or pulled through a die to create a pipe without any seams. In contrast, extruded pipes are made using cold extrusion, forcing a solid stainless steel billet through a die to achieve the desired shape and size. 2. Seamless Nature: Seamless pipes, as their name suggests, lack any seams or welds along their length. This attribute enhances their strength and structural integrity. In contrast, extruded pipes may display visible seams or welds, potentially compromising the overall structure. 3. Sizes and Dimensions: Seamless pipes offer a wider range of sizes and dimensions compared to extruded pipes. This is due to the flexibility provided by the hot rolling process, which allows for greater shaping and forming capabilities. Extruded pipes, however, are limited in their size range and are typically used for smaller diameter applications. 4. Surface Finish: Seamless pipes generally boast a smooth and polished surface finish, making them suitable for applications where aesthetics are important, such as architectural structures or decorative elements. Conversely, the manufacturing process of extruded pipes can result in a rougher surface finish, making them more appropriate for industrial or structural applications where appearance is less critical. 5. Cost: In general, seamless pipes are more expensive than extruded pipes due to the complexity of the manufacturing process. The hot rolling method necessitates specialized equipment and a higher level of expertise, increasing production costs. On the other hand, extruded pipes are more cost-effective as they are produced through a simpler cold extrusion process. In conclusion, the differences between seamless and extruded stainless steel pipes encompass their manufacturing process, seamless nature, size range, surface finish, and cost. The choice between the two will depend on the specific requirements of the application at hand.

Q:What are the common shapes of stainless steel pipes?: Stainless steel pipes come in various shapes that are widely utilized across different industries. These shapes comprise of round pipes, square pipes, rectangular pipes, and oval pipes. Round pipes rank among the most prevalent shapes and find extensive use in diverse applications. They are primarily employed for fluid and gas transportation, as well as the conveyance of other materials. Furthermore, round pipes are well-suited for structural purposes like handrails, scaffolding, and support beams. Square pipes possess a square cross-section and are commonly employed in construction projects, architectural designs, and furniture manufacturing. They offer a sleek and contemporary appearance, often utilized for framing structures, manufacturing shelves, and creating decorative elements. Rectangular pipes possess a rectangular cross-section and are frequently utilized in the construction, engineering, and manufacturing industries. They are often employed in building frameworks, manufacturing gates, fences, and various structural components. Oval pipes possess an elliptical or oval shape and are used in applications where aesthetics play a significant role. They are a popular choice in architectural designs, the automotive industry, and decorative applications. In conclusion, the selection of stainless steel pipe shape depends on the specific requirements of the application and desired aesthetics. Each shape offers distinct advantages and is chosen based on factors such as strength, durability, ease of fabrication, and overall design requirements.

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