Various types of stainless steel pipe waiting for you

Various types of stainless steel pipe waiting for you

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 8000 m.t./month

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Product Description:

1、Structure of Stainless Steel Welded Pipe ASTM A358/A312/A778 Description：

Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings. It can be molded, rolling, and it can create amazing shapes to make it perfect, It is used as experimental buildings, The use of steel pipe welding of large stainless steel covers other examples.

2、Main Features of the Stainless Steel Welded Pipe ASTM A358/A312/A778：

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price

3、Stainless Steel Welded Pipe ASTM A358/A312/A778 Images：

Stainless Steel Welded Pipe ASTM A358/A312/A778

4、Stainless Steel Welded Pipe ASTM A358/A312/A778 Specification：

Size：

Outside diameter		Outside	Thickness
Outside diameter		Outside	SCH 5S	SCH 10S	SCH 20S	SCH 40S
(A)	(B)	mm	mm	mm	mm	mm
350	14′	355.6	3.96	4.78	7.92	11.13
400	16′	406.4	4.19	4.78	7.92	12.7
450	18′	457.2	4.19	4.78	7.92	14.27
500	20′	508.0	4.78	5.54	9.53	15.09
550	22′	558.8	4.78	5.54	9.53	15.09
600	24′	609.6	5.54	6.35	9.53	17.48
650	26′	660.4	5.54	7.92	12.7	17.48
700	28′	711.2	5.54	7.92	12.7	17.48
750	30′	762.0	6.35	7.92	12.7	17.48
800	32′	812.8		7.90	12.7	17.48
850	34	863.6		7.92	12.7	17.48
900	36′	914.4		7.92	12.7	19.05
1000	40′	1016.0		9.53

Tolerances on dimensions table：

Standard	Outside(mm)		Thickness(mm)	Length(mm)
ASTM A312	≤48.26	+0.40 -0.80	+No special provisions(Unspecified)-12.50%	Appoint LengthDefinite cut length+6.40 -0
	＞48.26~114.30	+0.80 -0.80
	＞114.30~219.08	+1.60 -0.80
	＞219.08~457.20	+2.40 -0.80
	＞457~660	+3.20/-0.80
	＞660~864	+4.00/-0.80
	＞864~1219	+4.48/-0.80
JIS G3459	＜30.00 ±0.30≥30.00 ±1.00%		＜2.00 ±0.20≥2.00 ±10%	Appoint LengthDefinite cut Length
GB/T 12771	＜13.00 ±0.2013.00~40.00 ±0.30≥40.00 ±0.80%		≤4.00 +0.50 -0.60＞4.00 ±10%	+20.00-0
EN 10217-7	D1±1.50% with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min) D4±0.5% with±0.10mm(min)		T1±15.00% with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min) T4±7.50% with±0.15mm(min) T5±5.00% with±0.10mm(min) EN ISO 1127	≤6000 +5.00 -06000~12000 +10.00 -0

5、FAQ of Stainless Steel Welded Pipe ASTM A358/A312/A778：

①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

Any question, pls feel free to contact us !

Q: How do you prevent erosion in stainless steel pipes?: To prevent erosion in stainless steel pipes, several measures can be taken. 1. Proper material selection: Choosing a high-quality grade of stainless steel with good resistance to erosion, such as 316 or duplex stainless steel, can significantly reduce the risk of erosion. 2. Corrosion-resistant coatings: Coating the internal surface of the stainless steel pipes with a corrosion-resistant material can provide an extra layer of protection against erosion. Epoxy coatings, for example, are commonly used to protect against erosion in pipes. 3. Flow control: Managing the flow rate and velocity of the fluid passing through the pipes is crucial in preventing erosion. High flow rates and excessive turbulence can accelerate the erosion process. Implementing flow control devices like flow restrictors or flow baffles can help regulate the fluid velocity, minimizing erosion. 4. Regular maintenance and inspection: Conducting routine inspections to identify any signs of erosion or corrosion is essential. This allows for timely repairs or replacements of affected sections before erosion becomes severe. Additionally, regular cleaning and flushing of the pipes can help remove any sediment or debris that may contribute to erosion. 5. Proper pipe installation: Ensuring that the pipes are properly installed and supported can help prevent damage caused by vibrations or excessive movement. Proper alignment and support can reduce stress on the pipes, minimizing the risk of erosion. 6. Fluid properties: Understanding the properties of the fluid being transported through the stainless steel pipes is important in preventing erosion. For instance, if the fluid contains abrasive particles, implementing filtration systems or using strainers can help remove these particles before they reach the pipes, reducing erosion. 7. Education and training: Providing education and training to personnel involved in the operation and maintenance of the pipes is crucial. This includes training on proper handling, maintenance, and troubleshooting techniques to identify and address erosion-related issues promptly. By implementing these preventive measures, erosion in stainless steel pipes can be effectively minimized, ensuring their longevity and optimal performance.

Q: What is the difference between 304L and 316L stainless steel pipes?: 304L and 316L, both stainless steel pipe types, have distinct differences in their chemical composition and specific properties. With a lower carbon content, 304L stainless steel is a variation of 304 stainless steel. This characteristic grants it greater resistance to sensitization, i.e., the formation of chromium carbide at grain boundaries, which can lead to intergranular corrosion. Due to this lower carbon content, 304L stainless steel pipes are commonly utilized in environments where sensitization is a concern, such as welding applications or corrosive settings. Conversely, 316L stainless steel is an austenitic stainless steel that boasts the inclusion of molybdenum. This element enhances its corrosion resistance when compared to 304L stainless steel. The addition of molybdenum strengthens its ability to combat pitting and crevice corrosion, making it suitable for use in more aggressive environments like marine or chemical processing settings. Regarding mechanical properties, 316L stainless steel pipes generally exhibit higher tensile strength and yield strength than 304L stainless steel pipes. Consequently, 316L stainless steel pipes are more suited for applications necessitating greater strength and durability. In summary, the primary disparity between 304L and 316L stainless steel pipes lies in their chemical composition and corrosion resistance properties. 304L stainless steel pipes offer enhanced resistance to sensitization, while 316L stainless steel pipes provide heightened corrosion resistance, especially in more aggressive environments. The selection between these two types depends on the specific requirements of the application and the environment in which the pipes will be employed.

Q: Are stainless steel pipes resistant to corrosion?: Stainless steel pipes possess a remarkable resistance against corrosion, owing to the inclusion of chromium in their composition. This results in the formation of a passive layer on the pipe's surface, acting as a shield against corrosive elements. By doing so, it effectively prevents the metal beneath from encountering any detrimental substances. Comparatively, stainless steel contains a chromium content of at least 10.5%, surpassing other steel types, thus augmenting its ability to ward off corrosion. Given this exceptional quality, stainless steel pipes find extensive usage in industries such as construction, oil and gas, and automotive. Such application is vital to ensure the pipes' durability and integrity over time.

Q: Can stainless steel pipes be lined?: Yes, stainless steel pipes can be lined. Lining stainless steel pipes is a common practice to enhance corrosion resistance, prevent contamination, or improve flow characteristics. Various lining materials such as plastic, rubber, or ceramics can be used to line stainless steel pipes based on the specific requirements and applications.

Q: What is the difference between 409 and 316 stainless steel pipes?: The main difference between 409 and 316 stainless steel pipes lies in their composition and intended use. 409 stainless steel is a ferritic stainless steel, meaning it contains a higher amount of chromium but lower amounts of nickel compared to 316 stainless steel. This makes 409 stainless steel less resistant to corrosion and oxidation, but it is still suitable for applications that involve moderate levels of corrosion resistance, such as automotive exhaust systems and heat exchangers. On the other hand, 316 stainless steel is an austenitic stainless steel that contains higher amounts of both chromium and nickel. Due to its composition, it offers excellent corrosion resistance, even in harsh environments, and is often used in applications where superior resistance to corrosion is required, such as marine environments, chemical processing plants, and medical equipment. In summary, the key differences between 409 and 316 stainless steel pipes are their composition and corrosion resistance. 409 stainless steel is suitable for applications with moderate levels of corrosion resistance, while 316 stainless steel is preferred for applications that require superior corrosion resistance in harsh environments.

Q: How do you prevent vibration in stainless steel pipes?: To prevent vibration in stainless steel pipes, various measures can be taken: 1. Employ suitable pipe supports: It is imperative to carefully select and install appropriate pipe supports. These supports should be designed to offer ample stability and rigidity to the pipe system, minimizing any potential movement or vibration. 2. Mitigate vibrations with isolators: Strategic placement of vibration isolators along the pipe system can help absorb and dampen vibrations. This reduces the transmission of vibrations through the stainless steel pipes. 3. Ensure proper pipe alignment: During installation, ensure that the pipes are aligned correctly. Misalignment can lead to stress concentrations and heightened vibration. Proper alignment helps distribute forces evenly and reduces vibration. 4. Decrease fluid velocity: High fluid velocities can induce turbulence and vibrations in the pipe system. By reducing the fluid velocity, either through adjusting the flow rate or utilizing flow control devices like throttling valves, vibrations can be minimized. 5. Implement soundproofing measures: In certain cases, vibrations may be caused by external factors, such as nearby machinery or equipment. To reduce noise and vibrations originating from these sources, consider implementing soundproofing measures like using noise-absorbing materials or installing vibration-blocking barriers. 6. Regularly maintain and inspect the pipe system: Conduct routine inspections to detect any signs of vibration or wear in the pipe system. Address any issues promptly to prevent further vibration problems. Additionally, ensure proper maintenance of the pipe system, including regular cleaning and lubrication of any moving parts. By implementing these measures, vibration in stainless steel pipes can be effectively prevented, ensuring the overall stability and integrity of the pipe system.

Q: Can stainless steel pipes be insulated with polyethylene terephthalate?: Indeed, it is possible to insulate stainless steel pipes with polyethylene terephthalate (PET). PET is widely employed as an insulating substance owing to its low thermal conductivity, elevated melting point, and commendable resistance against moisture, chemicals, and UV radiation. It can be administered as a safeguarding layer or encircling the stainless steel pipes in order to avert heat loss or gain. The installation of PET insulation is straightforward and it proves highly efficient in minimizing energy transfer, thus rendering it appropriate for a multitude of applications in industries like HVAC, plumbing, and oil and gas.

Q: Can stainless steel pipes be used for construction?: Yes, stainless steel pipes can be used for construction. Stainless steel is a highly durable and corrosion-resistant material, making it suitable for various construction applications. It is commonly used in plumbing systems, water supply lines, and underground piping where corrosion resistance is crucial. Stainless steel pipes are also used in constructing bridges, buildings, and infrastructure projects due to their strength and ability to withstand extreme weather conditions. Additionally, stainless steel's aesthetic appeal and low maintenance make it a preferred choice for architectural designs. Overall, stainless steel pipes are a reliable and long-lasting option for construction purposes.

Q: Can stainless steel pipes be used for dairy processing plants?: Yes, stainless steel pipes can be used for dairy processing plants. Stainless steel is a popular material choice in the food and beverage industry, including dairy processing plants, due to its excellent corrosion resistance, durability, and hygienic properties. Stainless steel pipes do not react with dairy products and can withstand the harsh cleaning and sanitization processes required in such plants. Additionally, stainless steel pipes have a smooth surface, which minimizes the risk of bacterial growth and allows for easy cleaning and maintenance. Therefore, stainless steel pipes are a suitable and commonly used option in dairy processing plants.

Q: What is the difference between 304J5 and 316J5 stainless steel pipes?: The primary distinction between stainless steel pipes of 304J5 and 316J5 lies in their chemical composition and their ability to resist corrosion. 304J5 stainless steel is classified as an austenitic stainless steel variant, comprising 18-20% chromium and 8-10% nickel. It also contains a small amount of carbon and manganese. This composition offers exceptional strength, durability, and resistance to corrosion, making it suitable for a wide range of applications, including plumbing, food processing, and chemical industries. However, it is important to note that 304J5 stainless steel is not as resistant to corrosion in chloride-rich environments as 316J5 stainless steel. On the other hand, 316J5 stainless steel is a higher-grade stainless steel variant that incorporates 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. The addition of molybdenum significantly enhances its corrosion resistance, particularly in chloride-rich environments like coastal or marine areas. This makes 316J5 stainless steel pipes more suitable for applications that involve exposure to saltwater or corrosive chemicals, such as marine equipment, chemical processing plants, and coastal structures. In conclusion, although both 304J5 and 316J5 stainless steel pipes offer commendable corrosion resistance, the presence of molybdenum in 316J5 provides it with superior resistance to corrosion, especially in chloride-rich environments. Therefore, the choice between the two depends on specific application requirements and the desired level of corrosion resistance.

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