321 Stainless Steel Welded Pipe System 1

321 Stainless Steel Welded Pipe

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5 Tons m.t.

Supply Capability:: -

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Stainless Steel Welded Pipe

APPLICATION:

Industrial Fluid Conveying

Boiler,Heat Exchanger and condenser

Sanitary and Thin-wall water pipe

Oil and Gas transportation etc.

Standards :

ASTM A249/A269/A270/A312/A358/A788/A789/A790

DIN/EN 10217/DIN 11850

JIS G3459，GB/T 12771 etc.

SIZES:

OUTSIDE DIAMETER		OD	WALL THICKNESS
OUTSIDE DIAMETER		OD	SCH 5S	SCH 10S	SCH 40S
N.B	NPS	mm	mm	mm	mm
8	1/4'	13.72	-	-	2.24
10	3/8'	17.15	-	-	2.31
15	1/2'	21.34	1.65	2.11	2.77
20	3/4'	26.67	1.65	2.11	2.87
25	1'	33.4	1.65	2.77	3.38
32	1-1/4'	42.16	1.65	2.77	3.56
40	1-1/2'	48.26	1.65	2.77	3.68
50	2'	60.33	1.65	2.77	3.91
65	2-1/2'	73.03	2.11	3.05	5.16
80	3'	88.9	2.11	3.05	5.49
90	3-1/2'	101.6	2.11	3.05	5.74
100	4'	114.3	2.11	3.05	6.02
125	5'	141.3	2.77	3.4	6.55
150	6'	168.28	2.77	3.4	7.11
200	8'	219.08	2.77	3.76	8.18
250	10'	273.05	3.4	4.19	9.27
300	12'	323.85	3.96	4.57	9.52
350	14'	355.6	3.96	4.78	11.13
400	16'	406.4	4.19	4.78	12.7
450	18'	457.2	4.19	4.78	14.27
500	20'	508	4.78	5.54	15.09
550	22'	558.8	4.78	5.54	15.09
600	24'	609.6	5.54	6.35	17.48
650	26'	660.4	5.54	7.92	17.48
700	28'	711.2	5.54	7.92	17.48
750	30'	762	6.35	7.92	17.48
800	32'	812.8	-	7.9	17.48
850	34	863.6	-	7.92	17.48
900	36'	914.4	-	7.92	19.05
1000	40'	1016	-	9.53	-

Q: Can stainless steel sheets be used for automotive exhaust systems?: Yes, stainless steel sheets can be used for automotive exhaust systems. Stainless steel is a popular material choice for exhaust systems due to its excellent corrosion resistance, high temperature resistance, and durability. It can withstand the harsh conditions of the exhaust system, including high heat, moisture, and chemicals. Stainless steel sheets can be formed and fabricated into various components of the exhaust system, such as pipes, mufflers, and catalytic converters. They provide long-lasting performance, reduce the risk of rust and corrosion, and contribute to the overall efficiency and longevity of the automotive exhaust system.

Q: Can stainless steel sheets be used for food processing or medical applications?: Yes, stainless steel sheets can be used for food processing or medical applications. Stainless steel is highly resistant to corrosion and contamination, making it suitable for these industries where hygiene and safety are crucial. It is easy to clean, maintain, and sterilize, making it an ideal choice for food processing equipment, surgical instruments, medical devices, and implants.

Q: Are stainless steel sheets suitable for roofing applications?: Certainly, roofing applications can benefit from the use of stainless steel sheets. Stainless steel possesses qualities such as durability, corrosion resistance, and strength, rendering it an excellent choice for roofs. It exhibits remarkable tolerance to severe weather conditions like extreme temperatures, strong winds, and heavy rainfall. Moreover, stainless steel sheets possess fire-resistant properties, thereby enhancing the safety level of the roof. Furthermore, stainless steel boasts an extended lifespan, necessitating minimal maintenance and repairs. In summary, stainless steel sheets offer a dependable and enduring solution for roofing needs.

Q: How do you remove fingerprints from brushed stainless steel sheets?: To remove fingerprints from brushed stainless steel sheets, you can follow these simple steps: 1. Start by gathering the necessary cleaning supplies. You will need a microfiber cloth, mild dish soap, warm water, and a stainless steel cleaner or vinegar. 2. Begin by dampening the microfiber cloth with warm water. Make sure the cloth is not soaking wet, just slightly damp. 3. Gently wipe the stainless steel surface in the direction of the grain. It is important to always follow the grain to avoid causing scratches or streaks. 4. If the fingerprints persist, you can add a small amount of mild dish soap to the damp cloth and continue wiping the surface. Be sure to rinse the cloth thoroughly after applying the soap. 5. If the fingerprints are still visible, you can use a stainless steel cleaner specifically designed for brushed stainless steel surfaces. Apply a small amount of the cleaner onto the microfiber cloth and wipe the surface in the direction of the grain. Remember to follow the manufacturer's instructions for the specific cleaner you are using. 6. Alternatively, you can use white vinegar as a natural cleaning solution. Dampen a cloth with vinegar and gently wipe the surface in the direction of the grain. Vinegar can help remove fingerprints and restore shine. 7. Once you have removed the fingerprints, use a dry microfiber cloth to buff the surface gently. This will help remove any remaining streaks and give the stainless steel a polished finish. Remember to always test any cleaning solution on a small, inconspicuous area of the stainless steel sheet before applying it to the entire surface. Additionally, avoid using abrasive materials or cleaners that contain chlorine or bleach, as they can damage the brushed finish of the stainless steel.

Q: What is the maximum size of stainless steel sheets?: The size of stainless steel sheets can differ based on the manufacturer and customer requirements. Generally, standard sizes for stainless steel sheets range from 4 feet by 8 feet (1.2 meters by 2.4 meters) to 5 feet by 10 feet (1.5 meters by 3 meters). Although some manufacturers may offer larger sizes like 6 feet by 12 feet (1.8 meters by 3.7 meters), these are rare and may need special ordering. It is important to note that custom sizes can be created by cutting or welding multiple sheets together, enabling larger dimensions if necessary.

Q: Can stainless steel sheets be used for cryogenic storage containers?: Yes, stainless steel sheets can be used for cryogenic storage containers. Stainless steel is known for its excellent strength, durability, and resistance to corrosion, which makes it well-suited for cryogenic applications. Additionally, stainless steel has a low thermal conductivity, which helps to minimize heat transfer from the surroundings to the stored contents. This property is crucial in cryogenic storage to maintain the low temperatures required for the preservation of materials such as liquefied gases or biological samples. Overall, stainless steel sheets are a reliable and commonly used material for cryogenic storage containers.

Q: Are stainless steel sheets resistant to scaling at high temperatures?: Yes, stainless steel sheets are generally resistant to scaling at high temperatures. This resistance is due to the high chromium content in stainless steel, which forms a protective oxide layer on the surface when exposed to oxygen. This oxide layer acts as a barrier, preventing further oxidation and scaling of the material. However, the resistance to scaling can vary depending on the specific grade and composition of stainless steel, as well as the temperature and duration of exposure. In extremely high-temperature environments, stainless steel may still experience some degree of scaling, but it is generally more resistant compared to other materials.

Q: Can stainless steel sheets be used in outdoor applications?: Yes, stainless steel sheets can be used in outdoor applications. Stainless steel is highly resistant to corrosion and rust, making it an ideal material for outdoor use. It can withstand exposure to various weather conditions and is commonly used in outdoor structures, appliances, and decorative elements.

Q: How do I prevent stress corrosion cracking on stainless steel sheets?: To prevent stress corrosion cracking on stainless steel sheets, there are various steps that can be taken: 1. Opt for the appropriate stainless steel grade: Select a stainless steel grade that is resistant to stress corrosion cracking (SCC). Although grades like 304 and 316 generally have good SCC resistance, certain applications may necessitate higher alloyed grades like duplex or super duplex stainless steels. 2. Minimize exposure to corrosive environments: Limit the exposure of stainless steel sheets to environments known to cause stress corrosion cracking, such as chloride-rich or acidic surroundings. If avoiding exposure is not possible, consider applying protective coatings or barriers to shield the stainless steel from these corrosive elements. 3. Manage applied stress levels: Prevent subjecting the stainless steel sheets to excessive mechanical or thermal stresses. High tensile stresses can facilitate the initiation and propagation of stress corrosion cracking. Utilize appropriate design and fabrication techniques to ensure even stress distribution and minimize stress concentrations. 4. Maintain the surface condition: Ensure that the stainless steel sheets are devoid of surface contamination or defects that can serve as initiation sites for stress corrosion cracking. Regularly clean and inspect the sheets to eliminate any contaminants or corrosion products. 5. Employ inhibitors or cathodic protection: In certain cases where exposure to corrosive environments is unavoidable, the use of corrosion inhibitors or the implementation of cathodic protection techniques can help mitigate stress corrosion cracking. These methods work by reducing the corrosive activity on the stainless steel surface. 6. Handle and store properly: Exercise caution during transportation and storage to prevent excessive bending, vibration, or exposure to corrosive substances. Store stainless steel sheets in a clean and dry environment to avoid potential surface contamination. In conclusion, a combination of material selection, environmental control, stress management, surface maintenance, and proper handling can effectively prevent stress corrosion cracking on stainless steel sheets. It is advisable to consult with material experts or engineers to analyze specific application requirements and recommend the most appropriate preventive measures.

Q: How do I determine the flatness of stainless steel sheets?: To determine the flatness of stainless steel sheets, you can follow these steps: 1. Visual Inspection: Start by visually inspecting the sheet for any visible signs of warping, bending, or unevenness. Look for any noticeable waves, ripples, or twists in the surface. While this method may not be the most accurate, it can give you an initial idea of the sheet's overall flatness. 2. Measuring with a Straight Edge: Place a straight edge, such as a ruler or a long level, on the surface of the stainless steel sheet. Move the straight edge across different areas of the sheet, focusing on both the center and the edges. Observe if there are any gaps or spaces between the straight edge and the sheet. If the straight edge remains in full contact with the sheet throughout, it indicates a good level of flatness. 3. Using a Feeler Gauge: A feeler gauge is a precision measurement tool consisting of a set of thin metal blades of varying thicknesses. It can be used to measure the gap between the straight edge and the stainless steel sheet more accurately. Slide the feeler gauge into any gaps between the sheet and the straight edge, noting the blade thickness that fits snugly. This will help determine the extent of any unevenness or bowing present. 4. Laser Measurement: For more precise measurements, you can use a laser measuring device. Place the laser device on one end of the sheet and measure the distance from the laser to the surface at various points along the length of the sheet. Repeat this process on the opposite end of the sheet. Comparing these measurements will give you an indication of any differences in flatness. 5. Professional Testing: If the stainless steel sheets are intended for critical applications or if precise flatness is crucial, it may be wise to consult with a professional testing service. They can utilize advanced techniques such as optical profilometry or coordinate measuring machines to accurately measure the flatness of the sheet. It is important to note that due to the inherent characteristics of stainless steel, some slight deviations from perfect flatness may be acceptable within industry standards. The level of flatness required will depend on the specific application and the tolerance standards set by the manufacturer or customer.

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