The production and subsequent processing of the Cold Rolled Steel represent two fundamental phases. Pipes are easy to make of many materials, with a preference for stainless steel. Let's find out more about stainless steel pipes.
Quality Cold Rolled Steel Which Material to choose
A careful choice of materials for the production of the tubes is essential. To obtain high-level products, therefore, it is essential to prefer a certified stainless steel such as AISI 316. Sinorise, in fact, represents one of the best known and most reliable producer associations for the control of stainless steel (also in compliance with production procedures).
The pipes can be made in different formats (rectangular or circular section) and in different sizes and lengths.
Why choose AISI 316?
Certified AISI 316 Cold Rolled Steel is ideal for applications where there is a risk of corrosion, such as swimming pools, coastal areas or particularly polluted areas. It also uses in industrial sectors such as:
- Chemist
- Petrochemical
- Food
- Pharmaceutical
Furthermore, it can also use in different contexts such as paper mill production, in the extractive industries and in refineries. And even in nuclear plants.
Stainless steel pipes: processing and checks
Given the importance of their functions, stainless steel pipes subject to meticulous checks and, often, also to real tests with penetrating liquids and non-destructive tests. Furthermore, after production, they subject to special processes such as:
- Pickling
- Satin finish
- Scordatura of the welds
- polishing
Pipes with different sections: their scope
Cold Rolled Steel and welded pipes are one of the most popular types of metal products. They use in various fields, from pipelines to civil engineering. When choosing pipes, it is necessary to take into account their characteristics. They depend on many parameters, one of which is the shape of the section. It partially determines the rigidity of a metal product, conductivity and resistance to various mechanical loads.
Pipe and plumbing keys
In addition to traditional round pipes, other types of section are also popular.
What can be the cross section of pipes?
- Oval
- Rectangular
- Round
- Square
- Flat oval
- Drop-shaped
- Arbitrary
Rectangular and square pipes
Square and rectangular Cold Rolled Steel perfectly withstands external bending, tension and torsion loads. But internal influences can damage them. In addition, such pipes have a lower throughput and greater weight than round counterparts. Therefore, communications from square and rectangular products will be significantly heavier, which is uneconomical and can even be dangerous.
For these reasons, square and rectangular pipes are uses only for the assembly of steel structures. There are several reasons for this:
- Suitable weight
Square and rectangular pipes weigh much less than a steel bar.
- High strength
In terms of resistance to bending, the pipe is comparable to an all-metal beam, but weighs much less.
- Plastic
Round pipes has a great versatility
Cold Rolled Steel with round section is the most demanded in the market. The secret is in their versatility, because these metal products use in the construction and assembly of communications for various purposes. Among the ways to use round pipes:
- Laying of oil and gas pipelines
- Creating railings
- Assembly of building frames and supporting structures
Creation of communications for water pipes and steam transportation
- Movement of chemicals
Creation of parts of special equipment, cars, aircraft, ships
This breadth of application is explained by the following qualities of round pipes:
Cold Rolled Steel has High strength and durability
- Excellent deformability
Pipes are suitable for cutting and bending
Light weight compared to, for example, square pipes
- Sustainability
To corrosion and aggressive chemical environments
- High throughput
Ability to withstand high internal pressure
Steel Oval pipes
The oval stainless Cold Rolled Steel is an excellent replacement for round counterparts in cases where space is required. The throughput for both types of section is equal. In addition, stainless steel oval pipes have an aesthetic appearance and are easy to bend. Due to the listed advantages, such products use as follows:
It for, assembling communications, especially in small spaces the smaller area of the pipe allows reducing the depth of chasing.
Decorative purposes to create furniture, interior items
For the assembly of railings and other fences
Thanks to the ability of the pipes to bend perfectly, the railing can be made into any shape.
- To create load-bearing elements in construction
- Bent pipes
Cold Rolled Steel also uses to create decor items and installations.
Types of Teardrop pipes
The technology for the production of drop-shaped pipes is more complicated than with other types of section. In addition, their scope is quite narrow. Drop-shaped pipes use in mechanical engineering, the production of ships, cars, aircraft, and military equipment. Thanks to their shape, a number of design tasks are facilitated, and the efficiency of engines is increased.
Flat oval pipes
Flat-oval Cold Rolled Steel pipes are a relatively rare position on the rolled metal market. They are mainly use to create furniture, interior decoration. Also, partitions, racks, fences and other fences, advertising structures are created from such pipes. Flat-oval pipes combine high strength and ergonomics. At the same time, they have an aesthetic appearance.
Deformation rolling technology
Pipe rolling is not ordinary bending. The fact is that the deformation of the Cold Rolled Steel with the use of physical force results in a part with a narrowed section. Only on special rolling equipment it is possible to fully preserve the properties of the metal and not change its structure.
The deformation of a metal product to obtain the required configuration is usually performed on a rolling machine, in which the main mechanism is a unit consisting of several rotating rollers. The tubular billet is fed into the machine and rolled between the rolls. The distance between the rolls can be changed to obtain the desired radius of curvature.
Rolling by stages
- Work piece processing
The metal is cleaned with light abrasives or other chemicals.
- Pipe fixing
Weak fixing can lead to the formation of corrugations, and too strong fixation can cause dents.
- Bending the work piece
The bending unit comes into operation, adjusted to the desired bending angle and pipe thickness. The position of the rollers determines the curvature of the bend.
Features of Cold Rolled Steel various pipes
During rolling, it must be taken into account that each metal has deformation features.
- Round pipe
Cold Rolled Steel with a round section is easier to deform and transmit the clamping force well. During the bending process, uniform deformation occurs in all directions.
- Checking the geometry of the pipe
This must be done, since the elastic properties of the material do not always allow the product to be bent the first time without deviations.
Aluminum pipe
Aluminum is a ductile metal. Rolling aluminum products can lead to cracking. An aluminum billet usually breaks not along the inner radius, but along the outer one. The complexity of processing aluminum is also due to the fact that many products are not made of pure aluminum.
The added components reduce the ductility of the work piece. Therefore, before Cold Rolled Steel an aluminum pipe, it is important to determine the grade of the alloy.
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