• Seamless Stainless Steel Pipe S31803 China Factory System 1
  • Seamless Stainless Steel Pipe S31803 China Factory System 2
  • Seamless Stainless Steel Pipe S31803 China Factory System 3
  • Seamless Stainless Steel Pipe S31803 China Factory System 4
Seamless Stainless Steel Pipe S31803 China Factory

Seamless Stainless Steel Pipe S31803 China Factory

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Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
30 m.t.
Supply Capability:
12000 m.t./month

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1Structure of Seamless Pipe ASTM A106/53: 

1.duplex S31803 stainless steel seamless pipe
2.OD:3-580MM WT:1-30MM
3.ASTM A240/789/790
4.chemical industry pipe



2‍‍Main Features of the Seamless Pipe ASTM A106/53:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 


3Seamless Pipe ASTM A106/53 Specification



ASTM A106-2006, ASTM A53-2007


10#-45#, 16Mn

10#, 20#, 45#, 16Mn


8 - 33 mm

Section Shape


Outer Diameter

133 - 219 mm

Place of Origin

Shandong, China (Mainland)

Secondary Or Not



Hydraulic Pipe


Cold Drawn



‍Surface Treatment

factory state or painted black

‍Special Pipe

API Pipe

Alloy Or Not




Outer Diameter



20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B





4Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT


5FAQ of Seamless Pipe ASTM A106/53:  

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.


6‍‍Seamless Pipe ASTM A106/53 Images ‍‍



Q:What is the difference between 304J7 and 316J7 stainless steel pipes?
The main difference between 304J7 and 316J7 stainless steel pipes lies in their composition and properties. 304J7 stainless steel is part of the 304 series, which is a widely used stainless steel grade known for its excellent corrosion resistance and durability. It contains around 18-20% chromium and 8-10% nickel, which contribute to its corrosion resistance and make it suitable for various applications, including plumbing, food processing, and chemical industries. On the other hand, 316J7 stainless steel belongs to the 316 series, which is a higher grade of stainless steel compared to 304. It contains a higher amount of chromium (16-18%) and nickel (10-14%) as well as the addition of molybdenum (2-3%), which further enhances its corrosion resistance, especially against chlorides and other aggressive environments. This makes 316J7 stainless steel pipes ideal for applications such as marine environments, coastal areas, and chemical processing plants. In terms of mechanical properties, 316J7 stainless steel pipes generally have higher tensile strength and creep resistance compared to 304J7. This makes them more suitable for high-pressure and high-temperature applications. Furthermore, 316J7 stainless steel pipes are often considered more expensive than 304J7 due to their superior corrosion resistance and enhanced properties. However, the specific pricing may vary depending on market conditions and other factors. In summary, while both 304J7 and 316J7 stainless steel pipes offer good corrosion resistance, 316J7 is a higher grade with superior resistance to chlorides and aggressive environments. The choice between the two will depend on the specific application requirements, budget, and environmental factors.
Q:Can stainless steel pipes be insulated with polylactic acid?
Yes, stainless steel pipes can be insulated with polylactic acid (PLA). PLA is a biodegradable and renewable thermoplastic polymer that is derived from renewable sources such as corn starch or sugar cane. It is commonly used as an insulation material due to its low thermal conductivity and good insulation properties. To insulate stainless steel pipes with PLA, a layer of PLA insulation can be applied around the pipes. This insulation layer helps to reduce heat loss or gain, prevent condensation, and improve energy efficiency. The PLA insulation can be in the form of sheets or tubes that can be easily wrapped around the pipes. One of the advantages of using PLA insulation is its eco-friendly nature. PLA is biodegradable and does not release harmful toxins during its production or disposal. It is also a sustainable material as it can be derived from renewable resources. Additionally, PLA insulation is resistant to moisture and has good dimensional stability, making it suitable for various applications. However, it is important to note that PLA has a lower melting point compared to stainless steel, so it may not be suitable for high-temperature applications. If the pipes are exposed to extreme heat, alternative insulation materials with higher melting points should be considered. In conclusion, stainless steel pipes can be effectively insulated with polylactic acid (PLA) insulation. PLA insulation offers good thermal properties, is eco-friendly, and can contribute to energy savings. However, it is essential to consider the temperature limits of PLA when using it for insulation purposes.
Q:Are stainless steel pipes suitable for mining industries?
Yes, stainless steel pipes are highly suitable for mining industries. Stainless steel has excellent corrosion resistance properties, making it ideal for handling various aggressive and corrosive substances found in mining operations. Additionally, stainless steel pipes offer high strength and durability, ensuring reliable and long-lasting performance in harsh and demanding mining environments.
Q:Can stainless steel pipes be used for wastewater treatment?
Stainless steel pipes are indeed suitable for wastewater treatment. This material, known for its resistance to corrosion, brings numerous advantages to applications in wastewater treatment. It is highly durable and can withstand exposure to aggressive chemicals and abrasive substances typically found in wastewater. Moreover, stainless steel pipes do not rust, ensuring a longer lifespan and minimizing the chances of pipe failure. In addition, stainless steel is inert and non-reactive, making it ideal for transporting and containing various types of wastewater without any risk of contamination. The smooth surface of stainless steel pipes also prevents the accumulation of deposits and biofilm, reducing the likelihood of clogging and allowing for the efficient flow of wastewater. All in all, stainless steel pipes present a dependable and sustainable choice for wastewater treatment systems.
Q:Can stainless steel pipes be pressure tested?
Yes, stainless steel pipes can be pressure tested. Pressure testing involves subjecting the pipes to a higher pressure than they would normally experience during normal operations to ensure their strength and integrity. Stainless steel is known for its durability and ability to withstand high-pressure conditions, making it suitable for pressure testing applications. The process involves filling the pipes with a liquid or gas and increasing the pressure to the desired level while monitoring for any leaks or failures. It is important to follow proper procedures and safety measures during pressure testing to ensure accurate results and prevent any potential hazards.
Q:How do stainless steel pipes compare to other materials like copper or PVC?
Stainless steel pipes possess numerous advantages when compared to other materials such as copper or PVC. To begin with, stainless steel exhibits exceptional resistance to both corrosion and rust, rendering it suitable for a variety of applications, especially in environments characterized by high moisture or chemical exposure. Conversely, copper pipes are prone to corrosion over time and may necessitate additional protective coatings or treatments. Moreover, stainless steel pipes boast remarkable strength and durability, enabling them to withstand high pressure and temperature conditions. PVC pipes, despite being lightweight and easy to install, do not possess the same level of strength as stainless steel and may crack or deform under extreme circumstances. An additional benefit of stainless steel pipes lies in their ability to accommodate a wide variety of fluids, including corrosive substances and high-temperature liquids. Conversely, PVC pipes have limited compatibility and may not be suitable for certain applications that demand resistance to chemicals or extreme temperatures. Furthermore, stainless steel pipes offer superior fire resistance in comparison to PVC pipes, which are highly flammable and emit toxic fumes when exposed to fire. Consequently, stainless steel pipes serve as a safer alternative, particularly in buildings or industries where fire safety is of utmost importance. Lastly, stainless steel pipes possess a longer lifespan when compared to copper or PVC pipes. While copper pipes may develop leaks or pinholes over time, and PVC pipes may become brittle and crack, stainless steel pipes are engineered to endure for decades with minimal maintenance. In conclusion, stainless steel pipes represent a dependable and durable choice for an array of applications due to their corrosion resistance, strength, versatility, fire resistance, and prolonged lifespan. They outperform copper and PVC pipes in terms of durability, compatibility, safety, and overall performance, thus establishing themselves as an excellent option for numerous industries and applications.
Q:Can stainless steel pipes withstand high temperatures?
Yes, stainless steel pipes are known for their excellent heat resistance and can withstand high temperatures. The specific temperature range that stainless steel pipes can withstand depends on the grade of stainless steel used. Generally, stainless steel pipes can handle temperatures up to 1200°C (2192°F) without losing their structural integrity. In addition to their high-temperature resistance, stainless steel pipes also exhibit good corrosion resistance, making them suitable for various industrial applications where high temperatures and corrosive environments are present, such as in chemical processing plants, power generation facilities, and automotive exhaust systems.
Q:What are the different types of stainless steel pipe insulation?
There are several different types of stainless steel pipe insulation available on the market. These types can vary in terms of their material composition, construction, and insulation properties. One common type is fiberglass insulation, which consists of a layer of fiberglass material wrapped around the stainless steel pipe. This type of insulation is known for its excellent thermal insulation properties and its ability to withstand high temperatures. It is also resistant to moisture, making it suitable for both indoor and outdoor applications. Another type is foam insulation, which is made from a foamed plastic material such as polyurethane or polystyrene. Foam insulation is lightweight and easy to install, and it provides good thermal insulation as well as acoustic insulation. It is commonly used in residential and commercial buildings to insulate hot water pipes and HVAC systems. Additionally, there are elastomeric insulation materials, which are flexible rubber-like materials that can be easily wrapped around the stainless steel pipe. These materials are known for their excellent thermal insulation properties and their ability to resist moisture and condensation. Elastomeric insulation is commonly used in refrigeration and air conditioning systems. Finally, there are also pre-insulated stainless steel pipe systems, which consist of a stainless steel pipe already insulated with a layer of insulation material. This type of insulation is commonly used in industrial applications where thermal insulation is critical, such as in chemical plants or oil refineries. In conclusion, the different types of stainless steel pipe insulation include fiberglass insulation, foam insulation, elastomeric insulation, and pre-insulated pipe systems. The choice of insulation type depends on factors such as the application, desired insulation properties, and budget.
Q:What is the difference between 430 and 316 stainless steel pipes?
The main difference between 430 and 316 stainless steel pipes lies in their composition and properties. 430 stainless steel is a ferritic stainless steel that contains chromium, which gives it good corrosion resistance. However, it is not as resistant to corrosion as 316 stainless steel. It also has lower nickel content compared to 316 stainless steel. On the other hand, 316 stainless steel is an austenitic stainless steel that contains both chromium and nickel. It has excellent corrosion resistance, making it suitable for various applications, including marine environments, where it is exposed to saltwater and other corrosive substances. It also has higher tensile strength and creep resistance compared to 430 stainless steel. In terms of appearance, 430 stainless steel has a dull, brushed finish, while 316 stainless steel has a bright, reflective finish. Considering these differences, the choice between 430 and 316 stainless steel pipes depends on the specific application and the level of corrosion resistance required.
Q:What are the common wall thicknesses for stainless steel pipes?
The stainless steel pipes' common wall thicknesses vary based on the application and the specific grade of stainless steel used. However, there are several readily available wall thicknesses, including Schedule 5S, Schedule 10S, Schedule 40S, and Schedule 80S. Schedule 5S typically features a thinner wall thickness, making it suitable for low-pressure and light-duty applications. Schedule 10S, slightly thicker, can withstand higher pressures, making it suitable for a wider range of applications. Schedule 40S is commonly utilized in industrial and commercial settings where higher pressures and temperatures are involved. As for Schedule 80S, it boasts the thickest wall thickness and is commonly employed in heavy-duty applications like the oil and gas industry. It is crucial to note that these are just a few of the stainless steel pipe's common wall thicknesses, and other options may exist based on specific project requirements. Consulting a professional or referring to industry standards and specifications can assist in determining the appropriate wall thickness for a particular application.

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