Sch40 Stainless Steel Pipe TP304 316 316L in Wuxi ,China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 2 m.t.
- Supply Capability:
- 25000 m.t./month
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Item specifice
316 stainless steel pipe
Product Description
Item | Sch40 stainless steel pipe TP304 316 316L |
Standard | ASTMA312,A213,A376,A789,A790,A376,A249, EN10217-7-2005,GB14976-2002,GB13296-2009, JIS G3459-2004,JIS3463-2006 |
Technique | cold rolled,hot rolled ,cold drawn |
Outside diameter | DN10-DN1200,3/8"-100",6-2500mm |
Wall thickness | SCH5-SCH160,XS,STD,XXS,0.5-150mm |
Length | 5.8m,6m,11.8m,12m,or as required |
Surface | Annealing,picking,polished,bright,hair line,brush,sand blast,stain finish,etc |
Price term | Ex-Work,FOB,CNF,CFR,CIF,FCA,DDP,DDU.etc |
Payment term | TT,L/C,western Union |
Export to | Ireland,Singapore,Indonesia,Ukraine,Saudi Arabia,Spain,Canada,USA,Brazil,Thailand, Malaysia,Chile,Korea,Iran,India,Egypt,Malaysia, Viet Nam,Oman,Dubai,Holland, Mexico,Peru,Italy,Russia,Nigeria,etc |
Package | Standard export package,suit for all kinds of transport, or as required |
Container Size | 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High),20-25 Metric ton 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High),20-25 Metric ton 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High),20-25 Metric ton |
Application | widely used in petroleum, foodstuff, chemical industry, construction,electric power, nuclear energy,biotechnology, machinery, paper making,shipbuilding,boiler fields etc |
Contact | If you have any question,please feel free to contact me . We are sure your inquiry or requirements will get prompt attention. |
Definition of stainless steel(Adopted form Wikipedia)
In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable",
is defined as a steelalloy with a minimum of 10.5% to 11% chromium content by mass.
Stainless steel does not readily corrode, rust or stain with water as ordinary steel does,
but despite the name it is not fully stain-proof, most notably under low oxygen, high salinity,
or poor circulation environments. It is also called corrosion-resistant steel or CRES
when the alloy type and grade are not detailed, particularly in the aviation industry.
There are different grades and surface finishes of stainless steel to suit the environment
the alloy must endure. Stainless steel is used where both the properties of steel
and resistance to corrosion are required.
Surface Finish :
Surface finish | Characteristics and application |
No.2B | The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties, No2B could nearly satisfy comprehensive uses. |
No.3 | Polished with abrasive belt of git#100-#200, have better brightness with discontinuous coarse stria, used as inner and external ornaments for building, electrical appliances and kitchen utensils etc. |
No.4 | Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria, but thinner than No3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment etc. |
HL | Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous streaks, mainly used as buildings ornaments elevators, door of building, frontal plate etc. |
BA | Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror, kitchen apparatus, ornament etc. |
8K | The product have excellent brightness and prefer reflexivity can to be the mirror. |
- Q:Are stainless steel pipes suitable for abrasive media?
- Yes, stainless steel pipes are suitable for abrasive media. Stainless steel is known for its high strength and corrosion resistance, making it an ideal material for handling abrasive substances. The smooth surface of stainless steel pipes helps to reduce friction and minimize wear and tear caused by abrasive particles. Additionally, stainless steel pipes can withstand high pressures and temperatures, making them suitable for various industrial applications where abrasive media is involved, such as mining, chemical processing, and wastewater treatment. Overall, stainless steel pipes are a reliable and durable choice for transporting abrasive media.
- Q:Stainless steel and stainless steel pipe inside and outside polishing off, what is the difference?
- The main difference between these materials is that the chemical composition is different. The corrosion resistance of 316L is stronger than that of 304 and 304L, and that of L indicates lower carbon content and stronger flexibility. Choose the key depends on the things inside, corrosion is not big, how to use the environment, there are high pressure requirements are not high.
- Q:Are stainless steel pipes suitable for paper and pulp industry?
- Yes, stainless steel pipes are highly suitable for the paper and pulp industry due to their exceptional corrosion resistance, durability, and ability to withstand high temperatures and pressures. They are commonly used for transporting various chemicals, fluids, and slurries within the paper and pulp manufacturing processes. Stainless steel pipes also offer hygienic properties, ease of maintenance, and longevity, making them an ideal choice for this industry.
- Q:How do you prevent pitting corrosion in stainless steel pipes?
- To prevent pitting corrosion in stainless steel pipes, several measures can be taken: 1. Choose the right grade of stainless steel: Not all stainless steels are created equal. Opt for grades with a higher resistance to corrosion, such as 316 or 904L, which contain molybdenum and have better resistance to pitting corrosion. 2. Adequate alloying elements: Ensure that the stainless steel pipe contains the proper amount of alloying elements, such as chromium and molybdenum. These elements form a protective layer on the surface of the steel, making it more resistant to corrosion. 3. Regular cleaning and maintenance: Regularly clean the stainless steel pipes to remove any contaminants or deposits that could lead to pitting corrosion. Avoid using abrasive materials or cleaners that may damage the protective layer of the steel. 4. Avoid exposure to aggressive environments: Limit the exposure of stainless steel pipes to aggressive substances like chloride ions, acidic solutions, or high temperatures, as these can accelerate pitting corrosion. If exposure is unavoidable, consider using protective coatings or linings to create a barrier between the steel and the corrosive environment. 5. Cathodic protection: Implement cathodic protection techniques, such as sacrificial anode systems or impressed current systems, to protect stainless steel pipes. These methods create a potential difference between the stainless steel and a more easily corroded metal, redirecting corrosion away from the stainless steel. 6. Control water chemistry: In applications involving water, monitor and control the water chemistry parameters such as pH, temperature, and chloride levels. Adjusting these factors within acceptable limits can help prevent pitting corrosion in stainless steel pipes. 7. Implement proper design and installation practices: Ensure that stainless steel pipes are designed and installed correctly, considering factors such as avoiding crevices, proper drainage, and avoiding stagnant areas where corrosion can occur. Proper insulation and the use of gaskets or flanges made from compatible materials can also prevent pitting corrosion. By following these preventive measures, you can significantly reduce the risk of pitting corrosion in stainless steel pipes, extending their lifespan and maintaining their structural integrity.
- Q:What is the difference between 304Cb and 316Cb stainless steel pipes?
- The chemical composition and properties differentiate 304Cb and 316Cb stainless steel pipes. 304Cb stainless steel is an austenitic alloy with chromium, nickel, and a small amount of niobium. The niobium improves its resistance to intergranular corrosion, making it suitable for applications in food processing, chemical and petrochemical industries, and architecture. On the contrary, 316Cb stainless steel, also an austenitic alloy, contains chromium, nickel, and a higher proportion of molybdenum. The increased molybdenum content provides superior resistance to corrosion and pitting in chloride environments. Therefore, 316Cb stainless steel pipes are ideal for marine environments or coastal areas where exposure to saltwater or corrosive substances is common. In conclusion, both 304Cb and 316Cb stainless steel pipes are excellent options for various applications. However, 316Cb stainless steel offers enhanced corrosion resistance in chloride environments due to its higher molybdenum content. The choice between the two depends on the specific requirements and surroundings of the application.
- Q:How do you calculate the expansion of stainless steel pipes?
- In order to calculate the expansion of stainless steel pipes, it is necessary to take into account the coefficient of thermal expansion (CTE) of the material. The CTE quantifies the extent to which a material expands or contracts when exposed to temperature changes. To begin, the initial length of the stainless steel pipe must be determined. This refers to the length of the pipe at the starting temperature. Subsequently, the final operating temperature of the pipe needs to be established. This denotes the temperature at which the expansion is desired to be calculated. The CTE value for the specific grade of stainless steel used in the pipe must be obtained. The CTE is typically expressed in units of per degree Celsius (or per degree Fahrenheit). Multiply the initial length of the pipe by the CTE value and then multiply it by the change in temperature. This computation yields the expansion or contraction of the pipe within the given temperature range. For instance, assume a stainless steel pipe with an initial length of 10 meters, a CTE of 17 x 10^-6 per degree Celsius, and a desired expansion calculation at a final temperature of 100 degrees Celsius. The change in temperature is determined by subtracting the initial temperature from the final temperature. Expansion = Initial Length * CTE * Change in Temperature Expansion = 10 meters * 17 x 10^-6 per degree Celsius * 100 degrees Celsius Expansion = 0.0017 meters or 1.7 millimeters Consequently, when subjected to a temperature increase of 100 degrees Celsius, the stainless steel pipe would expand by 1.7 millimeters. It is important to note that this calculation assumes a uniform expansion throughout the entire length of the pipe. In reality, thermal expansion may vary due to factors such as pipe diameter, wall thickness, and other structural considerations. Thus, it is advisable to consult industry standards or engineering references for more precise calculations in specific applications.
- Q:How do you pressure test stainless steel pipes?
- Pressure testing stainless steel pipes is an essential step to ensure their integrity and safety. Here is a step-by-step guide on how to pressure test stainless steel pipes: 1. Prepare the pipes: Before starting the pressure test, ensure that the stainless steel pipes are clean and free from any debris or contaminants. Inspect the pipes for any visible defects, such as cracks or leaks, and repair or replace them if necessary. 2. Gather the necessary equipment: You will need a pressure testing pump or equipment capable of generating the desired pressure, pressure gauges, and suitable seals or plugs to close off the pipe ends. 3. Determine the required pressure: Consult the engineering specifications or relevant industry standards to determine the appropriate pressure to which the stainless steel pipes should be tested. This pressure is usually specified in pounds per square inch (psi). 4. Close off the pipe ends: Use suitable seals or plugs to close off all the ends of the stainless steel pipes. Ensure that the seals or plugs are securely attached to prevent any leakage during the pressure test. 5. Connect the pressure testing equipment: Connect the pressure testing pump or equipment to one end of the pipe using a pressure gauge to monitor the pressure accurately. Make sure the connections are tight and leak-proof. 6. Apply pressure gradually: Slowly increase the pressure in the stainless steel pipes using the pressure testing pump or equipment. Monitor the pressure gauge closely and ensure it reaches and stabilizes at the desired testing pressure. This process should be done gradually to avoid sudden pressure surges that could potentially damage the pipes. 7. Maintain the pressure: Maintain the pressure at the desired level for a specified duration, typically as recommended by the engineering specifications or standards. This duration could range from a few minutes to several hours depending on the application and requirements. 8. Inspect for leaks: While maintaining the pressure, carefully inspect the stainless steel pipes for any signs of leakage. Look for any visible leaks, listen for hissing sounds, or use a leak-detection solution or soapy water to identify any escaping air or bubbles. If leaks are detected, stop the pressure test and address the issue before proceeding. 9. Release the pressure: Once the pressure test is completed, gradually release the pressure from the stainless steel pipes using the pressure testing pump or equipment. Take caution while releasing the pressure to prevent sudden decompression that could potentially damage the pipes. 10. Evaluate the results: Inspect the stainless steel pipes again after the pressure test to ensure no new leaks or defects have emerged. If the pipes have successfully passed the pressure test without any issues, they can be considered safe and suitable for their intended application. It is important to note that pressure testing stainless steel pipes should be conducted by qualified personnel following industry standards and guidelines to ensure accuracy and safety.
- Q:How do stainless steel pipes compare to ductile iron pipes?
- When comparing stainless steel pipes to ductile iron pipes, there are several factors to consider. Firstly, stainless steel pipes have a higher resistance to corrosion compared to ductile iron pipes. This is due to the presence of chromium in stainless steel, which forms a protective layer on the surface of the pipe, preventing rust and corrosion. Ductile iron, on the other hand, is more prone to corrosion and may require additional coatings or linings to protect against it. Secondly, stainless steel pipes have a higher strength-to-weight ratio than ductile iron pipes. This means that stainless steel pipes can withstand higher pressure and have a longer lifespan, making them more durable and reliable. Ductile iron pipes are also strong, but they are generally heavier, which can make installation more challenging. Another important factor to consider is the cost. Stainless steel pipes tend to be more expensive than ductile iron pipes, primarily due to the higher cost of raw materials and manufacturing processes. However, the longer lifespan and lower maintenance requirements of stainless steel pipes can offset this initial cost, making them a cost-effective choice in the long run. In terms of versatility, stainless steel pipes offer more flexibility in terms of design and application. They can be easily welded, bent, and fabricated to meet specific requirements. Ductile iron pipes, on the other hand, have limited flexibility and are typically used for underground water and sewage systems. Overall, both stainless steel and ductile iron pipes have their own advantages and disadvantages. The choice between them will depend on factors such as the specific application, budget, and desired lifespan.
- Q:Can stainless steel pipes be used for aerospace applications?
- Yes, stainless steel pipes can be used for aerospace applications. Stainless steel is known for its high strength, corrosion resistance, and durability, making it suitable for various aerospace components and structures. Its ability to withstand high temperatures, pressures, and environmental conditions makes it an ideal material choice for aerospace applications.
- Q:What is the maximum temperature limit for stainless steel pipes?
- The maximum temperature limit for stainless steel pipes varies depending on the grade of stainless steel used. However, in general, stainless steel pipes can withstand temperatures up to 1600°F (871°C) before experiencing significant deformation or loss of strength.
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Sch40 Stainless Steel Pipe TP304 316 316L in Wuxi ,China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 2 m.t.
- Supply Capability:
- 25000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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