Stainless Duplex Seamless Steel Pipe System 1

Stainless Duplex Seamless Steel Pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 3000 m.t./month

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Product Description:

1、Structure of Stainless Duplex Seamless Steel Pipe 31500 Description:

Duplex Stainless steel pipe and tubing are used for a variety of reasons: to resist corrosion and oxidation, to resist high temperatures, for cleanliness and low maintenance costs, and to maintain the purity of materials which come In contact with stainless. The inherent characteristics of stainless steel permit the design of thin wall piping systems without fear of early failure due to corrosion.

2、Main Features of the Duplex Seamless Steel Pipe 31500:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price

3、Duplex Seamless Steel Pipe 31500 Images：

Stainless Duplex Seamless Steel Pipe 31500

4、Duplex Seamless Steel Pipe 31500 Specification：

‍Detail infomation‍

Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501)

Chemical Composition

Grade	C max	Si max	Mn max	P max	S max	Cr	Ni	Mo	N
UNS S32750	0.030	0.8	1.2	0.030	0.015	24.0-26.0	6.0-8.0	3.0-5.0	0.24-0.32
UNS S31803	0.030	1.0	2.0	0.020	0.020	21.0-23.0	4.5-6.5	2.5-3.5	0.08-0.20
UNS S31500	0.030	1.0	1.2-2.0	0.030	0.030	18.0-19.0	4.5-5.5	2.5-3.5	0.05-0.10

Physical Properties

Grade	Y.S.MPa min	T.S.Mpa min	Elongation %	Hardness HRC
UNS S32750	550	800	15	20
UNS S31803	450	620	25	20
UNS S31500	440	630	30	20

Supplementary Testing :

we also carry out on the manufactured products supplementary testing.

Eddy Current Testing O.P Testing Radiography Testing	Corrosion Testing Micro Testing Macro Testing	IGC Testing Ultrasonic testing Liquid Penetrate testing

Eddy Current Testing
O.P Testing

Radiography Testing

Corrosion Testing
Micro Testing

Macro Testing

IGC Testing
Ultrasonic testing

Liquid Penetrate testing

5、FAQ of Duplex Seamless Steel Pipe 31500：

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: What is the average cost of steel pipes?: The average cost of steel pipes can vary significantly depending on factors such as size, grade, and quantity needed. Therefore, it is difficult to provide a specific average cost without more information.

Q: What are the different end types for steel pipes?: There are several different end types for steel pipes, including plain ends, beveled ends, threaded ends, and grooved ends. Plain ends are smooth and do not have any special features. Beveled ends are cut at an angle to facilitate welding. Threaded ends have threads that allow for easy installation with other fittings. Grooved ends have grooves that enable quick and secure connections using couplings.

Q: How are steel pipes used in the construction of stadiums?: Steel pipes are used in the construction of stadiums for various purposes such as supporting the roof structure, creating the framework for seating areas, and providing a sturdy infrastructure for plumbing and ventilation systems.

Q: How do you calculate the pipe flow rate for steel pipes?: To calculate the pipe flow rate for steel pipes, you can use the Hazen-Williams equation or the Darcy-Weisbach equation. These equations take into consideration factors such as the pipe diameter, length, roughness, and the pressure difference between the two ends of the pipe. By plugging in these values into the respective equation, you can determine the flow rate of the fluid passing through the steel pipe.

Q: How are steel pipes coated to prevent internal corrosion?: Steel pipes are coated to prevent internal corrosion through a process called internal coating. This involves applying a layer of protective material, such as epoxy or polyethylene, to the inner surface of the pipe. The coating acts as a barrier, preventing the steel from coming into contact with corrosive substances in the fluid being transported, thus effectively reducing the risk of internal corrosion.

Q: How do you measure the thickness of steel pipes?: To measure the thickness of steel pipes, you can use various methods depending on the level of accuracy required. One commonly used method is the ultrasonic measurement technique. Ultrasonic measurement involves using an ultrasonic thickness gauge, which emits high-frequency sound waves that travel through the pipe walls and bounce back to the gauge. The time it takes for the sound waves to travel through the pipe and return provides an accurate measurement of the thickness. This method is non-destructive and can be used on both ferrous and non-ferrous materials. Another method is the use of calipers or micrometers. This involves manually measuring the outside diameter (OD) and inside diameter (ID) of the pipe and then subtracting the ID from the OD to obtain the thickness. However, this method is less accurate compared to ultrasonic measurement. In some cases, where precision is not critical, a simple tape measure or ruler can be used to measure the outside diameter of the pipe. The thickness can then be estimated by referring to standard pipe thickness charts or tables. It is important to note that measuring the thickness of steel pipes accurately is crucial for various applications such as construction, manufacturing, and engineering. Therefore, it is recommended to use appropriate measuring tools and techniques to ensure accurate results.

Q: How are steel pipes used in seaport infrastructure?: Steel pipes are extensively used in seaport infrastructure for various purposes such as constructing piers, offshore platforms, and docking facilities. They are commonly used for building underwater foundations, pilings, and support structures that provide stability and strength to the port infrastructure. Steel pipes are also used in the construction of pipelines, drainage systems, and water supply networks within the seaport, ensuring efficient transportation of goods and materials. Overall, steel pipes play a crucial role in maintaining the structural integrity and functionality of seaport infrastructure.

Q: RC is it welded steel pipe or galvanized steel pipe?: RC pipe is galvanized steel pipe, usually followed by the diameter, such as RC50, that is, 50mm galvanized steel pipe.

Q: What is the role of steel pipes in the transportation of chemicals?: The role of steel pipes in the transportation of chemicals is to provide a strong, durable, and corrosion-resistant conduit for safely moving various types of chemicals from one location to another. Steel pipes are known for their high strength and ability to withstand high pressure, making them suitable for handling hazardous or aggressive substances. Additionally, the smooth interior surface of steel pipes minimizes friction, allowing for efficient and continuous flow of chemicals. The steel material is also resistant to chemical reactions, ensuring the integrity and purity of the transported substances. Overall, steel pipes play a crucial role in ensuring the safe and efficient transportation of chemicals, protecting both the environment and human health.

Q: Can steel pipes be used for offshore oil and gas platforms?: Yes, steel pipes are commonly used for offshore oil and gas platforms due to their high strength, durability, and resistance to corrosion in marine environments.

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