What is a round stainless steel pipe

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Introduction to round stainless steel pipe

In various medical and chemical industries, a round stainless steel pipe is commonly used.

Moreover, it is also suitable for the manufacture of various weapons and barrels.

Therefore, it is a material used in many industries.

So, what is a stainless steel round tube?

What about its composition and performance?

Next, let’s have a look together.

round stainless steel pipe

What is a round stainless steel pipe?

Round stainless steel pipe is a hollow long round steel.

As for stainless steel, it is the abbreviation for stainless acid-resistant steel.

Generally speaking, people turn steel that is resistant to weak corrosive media such as air, steam, and water into stainless steel.

And people turn the steel that is resistant to chemical corrosion media into acid-resistant steel.

Meanwhile, these chemical corrosive media include acid, alkali, salt, and so on.

Their difference is due to their different chemical composition. And the acid-resistant steel usually has rust resistance.

Due to the difference in chemical composition between the two, their corrosion resistance is different.

Ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel is generally non-corrosive.

Moreover, the mechanism of stainless steel rust prevention is that alloy elements form a dense oxide film. And it can isolate oxygen from contacting and prevents continued oxidation.

Size of round stainless steel pipe

Usually, people have abundant tube wall sizes.

Moreover, about 100 pipe-making machines fixed the size of each pipe.

Besides, people can also cut the tube to a specific length according to specific requirements.

Specification of round stainless steel pipe

Different uses need different specifications of round stainless steel pipe.

Moreover, for round stainless steel pipes that are subjected to fluid pressure, people have to conduct hydraulic tests to test their pressure resistance and quality.

And, it will not leak, wet, or expand under the specified pressure.

Such stainless steel round tubes are qualified products.

Meanwhile, some round stainless steel pipes are subject to crimping test, flaring test, and flattening test according to standards or needs.

Besides, people can calculate the minimum wall thickness according to this formula: tn*0.875=tm.

Among them, tn is the nominal wall thickness.

And tm is the minimum wall thickness. Meanwhile, their units

are all millimeters.

Regarding its diameter, the conventional ones are

9.5,15.9,19.1,25.4,31.8,38.1.

Of course, there are larger diameters: 88.9, 101.6,

114,141,168,159,219,273,323, 406.

In addition, round stainless steel suitable for medical

treatment is as small as a needle.

Next, let’s take a look at the production methods of it.

The production method of round stainless steel pipe

Stainless steel round pipes are manufactured by hot rolling, extrusion, and cold rolling.

Moreover, these processes can produce a corrosion-resistant round stainless steel pipe.

Meanwhile, the finish and tolerances produced by the cold forming process are more stringent than those produced by hot forming.

Next, we look at the characteristics of the following round stainless steel pipe.

Features of stainless steel pipe

It has the following advantages:

Preservative

Its surface is thin and dense chromium-rich oxide film.

And this makes the round stainless steel tube strong in high temperature and low-temperature resistance.

Moreover, it has good corrosion resistance in all water qualities.

Oxide film can repair itself

Moreover, this anti-rust film is very thin but very strong.

If there is slight damage, it can produce an oxide film again in the air.

And this has achieved a good protective effect.

Good strength and plasticity

The tensile strength of the stainless steel round tube is greater than 530N/mm.

And this is twice that of galvanized pipes, 3-4 times that of copper pipes, and 8-10 times that of PPR pipes.

Moreover, it has good ductility and toughness. This is conducive to saving water resources.

Meanwhile, its plasticity is good, and its surface is brighter. Therefore, it is steady and elegant after drawing. And people can use it to make different crafts.

Stable material performance

It can work safely for a long time under the temperature of -270℃-400℃.

No matter it is high temperature or low temperature, no harmful substances will be precipitated.

Therefore, its material properties are quite stable.

Large scrap value

Moreover, people can recycle it at 100%.

Meanwhile, stainless steel scrap also has great economic value. It is safe and non-toxic, with no corrosion and exudation, no peculiar smell, or turbidity.

Therefore, it will not cause secondary pollution to water quality.

Moreover, it improves the utilization of materials and simplifies the manufacturing process.

Meanwhile, people have saved materials and processing man-hours.

Other advantages

  1. It has good distortion resistance.
  2. Meanwhile, these round steel pipes have high corrosion resistance, high deform-ability, high toughness, and high strength. Therefore, it can withstand a lot of pressure.
  3. And its product portfolio is diversified, construction and assembly are convenient.
  4. Besides, stainless steel is also easy to clean and disinfect.

In general, the combination of these advantages makes stainless steel pipe the best choice for structural applications, especially those where the pipe may be exposed to corrosive environments.

Kind of round stainless steel pipe

Generally speaking, the round stainless steel pipe has two categories: welded pipe and seamless pipe.

Seamless pipe

Generally, people use the following steps to make a seamless pipe.

People use steel ingots or solid tube blanks to make capillaries through perforations.

Then, people make seamless steel pipes by hot rolling, cold rolling, or cold rolling.

Moreover, its specifications are expressed in millimeters of outer diameter * wall thickness.

Welding

Stainless steel pipe welding methods include argon arc welding, high-frequency induction welding, and laser beam welding.

Moreover, the size of the welded stainless steel pipe ranges from 0.188 “OD-8” OD.

Application of round stainless steel pipe

Its high functionality and aesthetics make stainless steel pipe a multifunctional product.

Therefore, people apply it to various industries.

Moreover, the stainless steel round tube has a hollow cross-section.

Therefore, people use it to make a large number of pipelines for conveying fluids. Such as pipelines for transporting oil, natural gas, gas, water, and certain solid materials.

Besides, its thermal insulation performance can reduce heat loss.

This is especially suitable for hot water transportation, will not cause environmental pollution, is green and environmentally friendly and is conducive to sustainable development.

In the construction industry, stainless steel round pipes are the most widely used.

Moreover, according to different applications, the diameter of the stainless steel seamless round tube is different.

Besides, due to its overall corrosion resistance and good machine-ability, round stainless steel pipes are also very

Suitable for these industries:

Next,let’s have a look at it.

  1. Chemical, petrochemical
  2. Power generation
  3. Renewable energy
  4. Pulp and paper
  5. Food and beverage
  6. Oil and gas
  7. Mining

In short, round stainless steel tubes are ideal for all applications that require higher strength and better corrosion resistance.

Many people don’t know the difference between pipes and tubes.

Next, let’s have a look at it.

The difference between pipes and tubes

Although people often use the terms “tube” and “pipe”

Actually, there are no difference in the appearance and the materials.  All the material we’ve introduced before can make a tube or pipe.

But, there are important differences between the two.

  1. Different shapes: the tube has a square nozzle. There are rectangular nozzles and round ones. The nozzles of pipes are round.
  2. Different toughness: tubes are rigid, and there are tubes that are not resistant to bending. But pipes are rigid. Therefore, they are resistant to bending.
  3. The use environment is different: tubes are used in situations that require small pipe diameters. Pipes are used in situations that require large pipe diameters. They range from half an inch to several feet.
  4. The required focus is different: the outer diameter of Tubes involves pressure. So its outer diameter is very accurate. And because people mainly use pipes to transport fluids. Therefore, people have high requirements for its internal pressure capability. Therefore, its wall thickness is very accurate.
  5. Different wall thickness levels: when the tube’s wall thickness level is increased by 1, its wall thickness increases by 1mm or 2mm. Moreover, its growth rate is fixed. The wall thickness of pipes is represented by Schedule. Moreover, the numerical relationship of each level is uncertain. For example, the wall thickness of Sch.20 is 1.245mm. The wall thickness of Sch. 30 is approximately 1.448mm. The Sch.40 is 1.727mm.
  6. although they have similar hollow shapes, pipes are measured by their outer diameter and wall thickness.
  7. Steel pipes are measured by their inner diameter.
  8. And then, stainless steel pipes are suitable for structural or aesthetic applications. The stainless steel tubes are usually used to transport gases and liquids.

Conclusion

Round stainless steel pipe is a hollow long round steel.

Usually, people have abundant tube wall sizes.

Moreover, about 100 pipe-making machines fixed the size of each pipe.

At the same time, people can also cut the length of the pipe according to specific requirements.

Besides, different uses need different round stainless steel pipes.

Moreover, for round stainless steel pipes that are subjected to fluid pressure, people have to conduct hydraulic tests to test their pressure resistance and quality.

As for its manufacturing method, the manufacturing process of the stainless steel round tube includes hot rolling, extrusion, and cold rolling.

Moreover, it has good corrosion resistance. And its oxide film can repair itself.

Because of its strength and good plasticity, it is suitable for stretching products.

Meanwhile, no matter it is high temperature or low temperature, no harmful substances will be precipitated. Therefore, its material properties are quite stable.

Because of its good features, round stainless steel tubes are ideal for all applications that require higher strength and better corrosion resistance.

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