The application and uses of carbon steel pipe

Carbon steel pipe is the most commonly and widely used in the gas project field.

Its main advantages are: high strength, good toughness, bearing stress, impact resistance and rigor, good plasticity, ease of welding and thermal processing, thin wall thickness, to save metal. But its poor corrosion resistance, need to have proper anti-corrosion measures. Steel pipe used in gas engineering are generally made of high quality low carbon steel (Q235) or low-alloy steel (16Mn).

Steel construction is the construction of a new type of energy saving and environmental protection system, known as the 21st century "green building". The steel construction is light weight, high strength, good seismic performance, energy saving, recycling, building structure, in line with the requirements of the development of energy efficient building and sustained and healthy economic development. The biggest advantage of the steel structure is to bring people to the building function, sensory requirements and economic requirements of a perfect combination. Steel tube structure, with its superior performance in recent years, application of the rapid development of the range of applications involving almost all structural areas, including housing construction, bridges, dams, offshore platform structure and tower masts and so on.

Steel with hollow sections is conveying fluid, such as the transportation of oil, gas, gas, water and some solid materials, pipes, etc.. Compared with the round steel and other solid steel in the flexural torsional strength, light weight, is an economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive transmission, bicycle rack and construction using steel scaffolding. Steel pipe manufacturing annular parts, can improve material utilization, and simplify the manufacturing process, saving material and machining time, such as rolling sleeve ring, jack sets, has been widely manufactured steel pipe.

Large-diameter steel pipe with good adhesion, corrosion resistance, can be resistant to acid, alkali and other chemical corrosion, non-toxic, does not rust, wear resistance, impact resistance, strong permeability, smooth pipe surface will not adhere to any substance, can reduce the transmission of resistance, large diameter steel pipe improve flow and transmission efficiency and reduce the delivery pressure losses. Solvent-free coating, no oozing substance, and thus will not the transmission medium of pollution in order to ensure the purity and health of the fluid at -40 ℃ to +80 ℃ range of thermal cycles used interchangeably, not aging. no cracks, and thus can be used in the cold zone and other harsh environment. Large-diameter steel pipe is pipe that outside diameter is above 1000MM, large diameter coated steel pipe is coated with plastic on the basis of large diameter spiral welded pipe and high-frequency welded pipe from the solvent-free coating, small-diameter steel pipe no oozing substance and therefore not pollution transport media, thus ensuring the purity and health of the fluid, -40 ℃ to +80 ℃ range of thermal cycles used interchangeably, no aging, no cracks, and thus in the cold zone and other harsh environments to use.

The large diameter coated steel pipes are widely used in tap water, natural gas, petroleum, chemical, pharmaceutical, telecommunications, electricity, large diameter steel marine engineering field generally less than the outer diameter of the tubes 89 are collectively referred to as small-diameter steel pipe.



Carbon steelspecification, Standard and identification

Carbon steel pipe tubing is used to transport fluids and gases in a variety of pneumatic, hydraulic, and process applications.

Carbon steel pipes for cooling

Carbon steel pipe cooling method varies with the material. For most kinds of steel use natural cooling to meet the requirements.

The application and uses of carbon steel pipe

Carbon steel pipe is the most commonly and widely used in the gas project field.
The large diameter coated steel pipes are widely used in tap water, natural gas, petroleum, chemical, pharmaceutical, telecommunications, electricity, large diameter steel marine engineering field generally less than the outer diameter of the tubes 89 are collectively referred to as small-diameter steel pipe.

Carbon steel tube mechanical properties

Carbon steel tube mechanical properties is generated in the carbon steel smelting defect smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

Carbon steel pipe rusting

Carbon steel pipe anti-rust oil: it is with a high corrosion resistance and adhesion,which does not contain harmful substances such as formaldehyde, benzene, heavy metals, environmental protection and the operator's physical and mental health.

Carbon steel pipe density

Density is calculated by dividing the mass by the volume. The density of carbon steel is approximately 7.85 g/cm3 (0.284 lb/in3).

The heat treatment of carbon steel pipe

Improving the performance of the steel is two ways, First, adjusting the chemical composition of the steel alloying; the other is the heat treatment, heat treatment and shaping deformation combination of approaches. In the field of modern industrial technology, heat treatment to improve the performance of the steel still occupy a dominant position.

Seamless carbon steel pipe hardness test method

Inner diameter of seamless steel pipe is more than 6.0mm and wall thickness is less than 13mm annealed seamless steel pipe material, which can be used W-B75 Webster Hardness test with very fast, easy, suitable for rapid non-destructive of the seamless steel pipe material qualified inspection.

Low carbon steel

Low carbon steel is a type of metal that has an alloying element made up of a relatively low amount of carbon. Typically, it has a carbon content that ranges between 0.05% and 0.30% and a manganese content that falls between 0.40 and 1.5%. Low carbon steel is one of the most common types of steel used for general purposes, in part because it is often less expensive than other types of steel.

Carbon steel pipe rusting

Carbon steel pipe anti-rust oil: it is with a high corrosion resistance and adhesion,which does not contain harmful substances such as formaldehyde, benzene, heavy metals, environmental protection and the operator's physical and mental health.

Brinell hardness of carbon steel pipe

Brinell hardness (HB) with a certain diameter of the steel balls or tungsten carbide balls, pressed into the pattern surface of a predetermined test force (F), after the predetermined hold time after drop test force, the diameter of the measurement sample surface indentation (L).

Difference between carbon steel and alloy steel

Steel is an alloy that mostly contains iron. But its properties can be changed to suit specific requirements by adding certain other elements.

Analysis on the weld defects on the low carbon steel pipeline

Encountered hole problems are very common in the welding process, welding materials drying, corrosion of the base metal and welding consumables, welding process is not stable enough oil and impurities and to protect the poor will be varying degrees of blowholes.

How to control welding gap for carbon steel pipe

The strip is into the welded pipe unit and by the multi-channel roll rolling, gradually rolled strip steel, formed with an opening gap round tube, adjust the amount of reduction squeeze rollers, so that the weld gap control for carbon steel pipe in 1 ~ 3mm, and to weld ends flush. If the gap is too large and will result in reduced proximity effect, eddy current lack of heat, poor weld joint between grain yield incomplete fusion or cracking.

Carbon steel pipe standard length

Delivery standard length of carbon steel pipe, also known as user requirements length or the length of the contract, there are four provisions in the existing standards

Carbon steel internal defects

Carbon steel internal defects is generated in the carbon steel smelting defect smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

Carbon steel tube mechanical properties

Carbon steel tube mechanical properties is generated in the carbon steel smelting defect smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

Carbon steel defect

Carbon steel defect is caused by the equipment, processes and operations in carbon steel smelting and rolling (forging) process, including scarring, cracks, residual shrinkage, layered, white point, segregation, non-metallic inclusions, such as osteoporosis and banded.

EN10025(93) S235JR(G2),S235 J0,S235J2G3,S235J2G4

For S235 steel , S means structural . 235 mean it's yield strength should be more than 235 MPa. The steel grades S235 may be supplied in qualities JR, JR(G2),J0,J2, J2G3,J2G4.

  • JR means impact test at 20 degree.
  • J0 means impact test at 0 degree
  • J2 means impact test at -20 degree.

Delivery condition of S235 steel has :

Normalizing rolling (+N) : rolling process in which the final deformation is carried out in a certain temperature range leading to a material condition equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing.

as-rolled(+AR): delivery condition without any special rolling and/or heat treatment condition.

thermomechanical rolling: rolling process in which the final deformation is carried out in a certain temperature range leading to a material condition with certain properties which cannot be achieved or repeated by heat treatment alone.

If you are interested to know more information about S235JR(G2),S235 J0,S235J2G3, S235J2G4 steel, please contact our sales team.

Related carbon steel products:

Carbon steel flanges
Carbon Steel Flanges
that is, the main material is carbon steel flange or end flange connectors. It contains carbon steel flange, known as carbon steel flange.
Carbon steel stub end
Carbon steel stub end
The stub ends are provided with a standard weld bevel and can be available in squared, flanged, victaulic and threaded ends.
ASTM A335 P22 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
Carbon steel caps
are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries.
ASTM/ ASME- Standards for pipes
ASTM A53
Standard Spec. for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A106 / A106M - 11
Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A179 Standarts
specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes


Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


SUNNY STEEL

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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