• Stainless Steel Welded Pipe ASTM A312/A358 System 1
  • Stainless Steel Welded Pipe ASTM A312/A358 System 2
  • Stainless Steel Welded Pipe ASTM A312/A358 System 3
  • Stainless Steel Welded Pipe ASTM A312/A358 System 4
Stainless Steel Welded Pipe ASTM A312/A358

Stainless Steel Welded Pipe ASTM A312/A358

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35 m.t.
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10000 m.t./month

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1、Structure of Stainless Steel Welded Pipe ASTM A358/A312/A316 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.






2Main Features of the Stainless Steel Welded Pipe ASTM A358/A312/A316



• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price 








3Stainless Steel Welded Pipe ASTM A358/A312/A316 Images




 

Stainless Steel Welded Pipe ASTM A312/A358

Stainless Steel Welded Pipe ASTM A312/A358


 




 

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

Size 

 

Outside   diameter          Outside                                                                           Thickness
SCH 5SSCH 10SSCH 20SSCH 40S
(A)(B)mmmmmmmmmm
35014′355.63.964.787.9211.13
40016′406.44.194.787.9212.7
45018′457.24.194.787.9214.27
50020′5084.785.549.5315.09
55022′558.84.785.549.5315.09
60024′609.65.546.359.5317.48
65026′660.45.547.9212.717.48
70028′711.25.547.9212.717.48
75030′7626.357.9212.717.48
80032′812.8 7.912.717.48
85034863.6 7.9212.717.48
90036′914.4 7.9212.719.05
100040′1016 9.53  

Tolerances on dimensions table

 

StandardOutside(mm)Thickness(mm)Length(mm)
ASTM A312≤48.26-0.4+No special provisions(Unspecified)-12.50%Appoint   LengthDefinite cut length+6.40
48.26~114.3000
114.30~219.080.8 
219.08~457.201.6 
457~660-4 
660~864-5 
 864~1219-5.6 
JIS G345930.00   ±0.30≥30.00 ±1.00%2.00   ±0.20≥2.00 ±10%Appoint   LengthDefinite cut Length
GB/T 1277113.00   ±0.2013.00~40.00 ±0.30≥40.00 ±0.80%≤4.00 +0.50   -0.604.00 ±10%20
EN 10217-7D1±1.50%   with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min)T1±15.00%   with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min)≤6000 +5.00   -06000~12000 +10.00 -0
D4±0.5%   with±0.10mm(min)T4±7.50%   with±0.15mm(min)
 T5±5.00%   with±0.10mm(min)
 EN ISO 1127

 

 

 




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



How 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.


Why 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:What are the limitations of using steel pipes?
There are several limitations to using steel pipes in various applications. Firstly, steel pipes can be quite expensive compared to other materials such as plastic or copper. This cost factor can be a significant limitation for projects with tight budgets. Secondly, steel pipes are susceptible to corrosion. Over time, exposure to moisture and certain chemicals can cause steel pipes to rust and deteriorate. This can lead to leaks, reduced structural integrity, and ultimately, the need for costly repairs or replacement. Another limitation of steel pipes is their weight and rigidity. Steel pipes are generally heavier and less flexible than other types of pipes, making them more challenging to install and maneuver in certain settings. Additionally, their rigid nature makes them less suitable for applications that require significant movement or flexibility. Furthermore, steel pipes can be prone to thermal expansion and contraction. When exposed to extreme temperatures, steel pipes can expand or contract, potentially causing stress on joints, fittings, or other components. This can lead to leaks or even pipe failure if not properly accounted for. Lastly, steel pipes are not as resistant to certain chemicals or substances as other materials. Some chemicals can corrode or erode the inner lining of steel pipes, compromising their integrity and potentially causing contamination or leakage. While steel pipes have many advantages, it is important to consider these limitations when deciding on the most suitable material for a specific application.
Q:How are steel pipes protected against external mechanical damage?
Steel pipes are protected against external mechanical damage through various methods. One common method is the use of protective coatings. These coatings provide a physical barrier between the steel surface and external forces, such as impact or abrasion. Coatings can be applied through processes like painting, epoxy coating, or wrapping the pipe with materials like polyethylene or polypropylene. Another method of protection is the use of external casing or encasement. Casing pipes are installed around the steel pipes to provide an additional layer of protection. These casing pipes are typically made of materials like concrete, PVC, or ductile iron, which are resistant to external mechanical damage. Furthermore, steel pipes can be protected by using supports and restraints. Properly designed supports and restraints help to distribute external forces evenly and prevent excessive stress or deformation on the pipe. This includes using hangers, clamps, or brackets to secure the pipe in place and minimize the risk of mechanical damage. In addition, steel pipes can be protected by implementing measures to prevent accidental impacts or collisions. This can involve installing protective barriers, fencing, or warning signs to alert people to the presence of pipelines and prevent unintentional damage. Overall, a combination of protective coatings, casing, supports, and preventive measures is utilized to ensure that steel pipes are safeguarded against external mechanical damage. These measures help to maintain the structural integrity of the pipes and ensure their long-term performance and reliability.
Q:What are the different types of thread connections used in steel pipes?
The different types of thread connections commonly used in steel pipes include tapered threads such as NPT (National Pipe Taper), BSPT (British Standard Pipe Taper), and API (American Petroleum Institute) threads, as well as straight threads like NPS (National Pipe Straight), BSPP (British Standard Pipe Parallel), and API threads. These connections are used to ensure a secure and leak-proof joint between pipe sections or fittings.
Q:How are steel pipes repaired in case of damage or leaks?
Various methods can be used to repair steel pipes in the event of damage or leaks. Welding is a common approach where a filler material is melted along with the damaged or leaking area, creating a strong bond that seals the leak. This method is effective for small to moderate-sized leaks and finds wide application in industries like oil and gas, plumbing, and construction. Another method involves the use of mechanical couplings. These couplings are designed to connect two sections of pipe securely, ensuring a tight connection. They can be utilized to repair damaged or leaking sections of a steel pipe by removing the damaged area and replacing it with a new section that is linked using the mechanical coupling. This method is particularly useful for larger leaks or damaged sections that cannot be repaired through welding. In certain cases, temporary fixes can be applied using pipe clamps or epoxy compounds. Pipe clamps are employed to seal the damaged area tightly, preventing further leakage. On the other hand, epoxy compounds are directly applied to the damaged or leaking section, creating a temporary seal that stops the leak until a more permanent repair can be carried out. It is essential to consider the severity and location of the damage or leak, as well as the specific requirements of the application, when deciding on the method of repair. In some instances, it may be necessary to replace the entire section of the steel pipe if the damage is extensive or if multiple leaks are present. It is advisable to consult a professional or a specialized pipe repair service to determine the most suitable repair method for a particular situation.
Q:Is there a weld on the outer wall of seamless steel tube?
Seamless steel pipe, not seamless steel pipe, seamless steel pipe, welded seam, how can it be called seamless pipe?. Tell you a method: measurement of wall thickness, multi test several points, if each point, that is because it is cold drawn pipe, seamless pipe, hot rolling, wall thickness may% by sample.
Q:Can steel pipes be used for underground steam pipelines?
Indeed, underground steam pipelines can indeed utilize steel pipes. Given their robust and enduring characteristics, steel pipes are frequently employed for an assortment of pipelines, such as those carrying steam. Their capacity to endure elevated temperatures and pressures renders them suitable for the subterranean transportation of steam. Furthermore, steel pipes exhibit outstanding resistance to corrosion, a crucial feature for subterranean pipelines that encounter moisture and potentially corrosive substances in the soil. In summary, steel pipes represent a dependable and widely embraced option for underground steam pipelines.
Q:What is lined pipe?
Is the coating of the inside of the pipe, such as pipe conveying sulfuric acid will corrode, corrosion, but soft plastic pipe, buried in the ground to wall thicker, then you can use the liner and characteristics of hard for using steel pipe laying, sheathed in the steel pipe into the thin plastic tube, it can transport the sulfuric acid,
Q:How are steel pipes tested for leaks?
Steel pipes are tested for leaks using various methods, including hydrostatic testing and ultrasonic testing. In hydrostatic testing, the pipes are filled with water or another suitable fluid and subjected to high pressure to check for any leakage. Ultrasonic testing involves using high-frequency sound waves to detect any defects or leaks in the pipes. These testing methods ensure the integrity and reliability of steel pipes.
Q:How are steel pipes used in construction?
Steel pipes are commonly used in construction for various purposes such as structural supports, plumbing systems, and underground utility installations. They provide strength, durability, and resistance to corrosion, making them ideal for carrying fluids, gases, and other materials. Additionally, steel pipes can be easily welded, allowing for efficient and secure connections in building frameworks and infrastructure.
Q:What are the factors affecting the lifespan of steel pipes?
There are several factors that can affect the lifespan of steel pipes. 1. Corrosion: Corrosion is one of the primary factors that can significantly reduce the lifespan of steel pipes. Exposure to moisture, chemicals, and other corrosive elements can lead to rusting and degradation of the pipe material over time. 2. Environmental conditions: The environment in which the steel pipes are installed plays a crucial role in their lifespan. Extreme temperatures, humidity, and exposure to various weather conditions can accelerate the corrosion process and weaken the pipe structure. 3. Water quality: The quality of the water flowing through the steel pipes can also impact their lifespan. Water with high acidity or alkalinity levels, excessive chlorine, or other contaminants can cause corrosion and deterioration of the pipe material. 4. Installation quality: The way steel pipes are installed can affect their lifespan. Poor installation practices, such as inadequate support or incorrect alignment, can lead to stress points and structural weaknesses, making the pipes more prone to failure. 5. Maintenance and repair: Regular maintenance and timely repairs are crucial in maximizing the lifespan of steel pipes. Proper cleaning, inspection, and corrosion protection measures can help identify and address potential issues before they progress and cause significant damage. 6. Design and material quality: The design and quality of steel used in pipe manufacturing are important factors in determining their lifespan. High-quality steel with appropriate alloy composition and thickness provides better resistance to corrosion and mechanical stress, ensuring a longer lifespan. 7. Load and pressure: The load and pressure that steel pipes are subjected to can impact their durability. Excessive pressure or frequent variations in pressure can put stress on the pipe walls, leading to fatigue or failure over time. By considering and addressing these factors, it is possible to extend the lifespan of steel pipes and ensure their reliable performance over an extended period.

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