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LSAW Pipe

LSAW (Longitudinal double submerge arc welding) carbon steel pipe is a type of SAW pipe made of steel plates that were hot rolled by JCOE, UOE, or COE forming technology. It can be used for a wide range of applications, such as petroleum and chemical production, oil and gas transportation, heavy machinery manufacturing, and construction.

LSAW Pipe

LSAW Pipe Specifications

Our LSAW pipes are produced using the Longitudinally Submerged Arc Welding procedure, ensuring a strong and durable product. These pipes are available in various dimensions and steel grades, each meeting rigorous production standards. The surface coatings applied enhance their durability and resistance to corrosion. The end types and joint methods can be customized to meet specific application requirements. These pipes are machined to perfection and find extensive applications in industries like oil and gas, and water supply.

LSAW Pipe
ProcedureLSAW (Longitudinally Submerged Arc Welding)
Dimensions219.1mm ~1626mm
8″ ~ 64″
DN200~ DN1600
Thickness6mm ~75mm
Unit Length3 ~ 18 mtrs
StandardsAPI 5L
EN10025
DIN17100
JIS G3101
ASTM A252
AWWA C200-97
Surface CoatingVarnishing, Oiling, Hot Dip Galvanizing
FBE, 2PP, 3PP, 2PE, 3PE
End TypePlain, Bevelled, Threaded, Grooved
Joint MethodFitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe MachiningWelding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding
ApplicationOil & Gas, Water Transmission, Solar Energy, Fire Fighting, Construction, Piling Work, Mechanical Engineering, Fabrication

What is LSAW Pipe?

LSAW (Longitudinal Double Submerged Arc Welding) carbon steel pipe welds steel plates that have been hot rolled using JCOE, UOE, or COE forming process.

LSAW Pipe

LSAW (Longitudinal double submerge arc welding) is a circular arc method used to weld carbon and low alloy steels at low hydrogen concentrations. It differs from the more conventional single or differential-current SAW processes in that it employs both an AC frequency current and a high voltage direct current electrode. A DC electrode guarantees that the arc vortex forms a completely closed circuit and avoids any contact with the metal base material, allowing for far more control over penetration levels and weld quality.

Where Are LSAW Pipes Used?

LSAW pipe has found widespread use in the oil and gas pipelines, which require pipes with particularly large diameters, thick wall thicknesses, and high strengths in order to efficiently transport hydrocarbons over great distances. In the meanwhile, LSAW pipe comes highly recommended for a variety of applications including weight bearing piles, combination wall piles, water treatment, the thermal sector, bridge construction, and others.

Oil & Gas

Construction

Water Transmission

Piling Work

Mechanical Engineering

Steel Fabrication

How Is LSAW Pipe Made In The UOE Method?

The term UOE is the abbreviation for U-O-E, which is a method used for the production of longitudinally welded large diameter pipes. The production process of UOE pipes is divided into three steps: pre-bending, forming, and longitudinal welding. First, the plate is pre-bent by different radii by a variety of forming presses. After that, it will be deformed into U-shape and O-shape by a specific forming press. Finally, these two pre-shaped plates are welded together in an LSAW process to form a final tube with satisfactory wall thicknesses.

Where Are LSAW Pipes Used?

LSAW pipe has found widespread use in the oil and gas pipelines, which require pipes with particularly large diameters, thick wall thicknesses, and high strengths in order to efficiently transport hydrocarbons over great distances. In the meanwhile, LSAW pipe comes highly recommended for a variety of applications including weight bearing piles, combination wall piles, water treatment, the thermal sector, bridge construction, and others.

Oil & Gas

Construction

Water Transmission

Piling Work

Mechanical Engineering

Steel Fabrication

How Is LSAW Pipe Made In The UOE Method?

The term UOE is the abbreviation for U-O-E, which is a method used for the production of longitudinally welded large diameter pipes. The production process of UOE pipes is divided into three steps: pre-bending, forming, and longitudinal welding. First, the plate is pre-bent by different radii by a variety of forming presses. After that, it will be deformed into U-shape and O-shape by a specific forming press. Finally, these two pre-shaped plates are welded together in an LSAW process to form a final tube with satisfactory wall thicknesses.

LSAW Pipe

How Is LSAW Pipe Made In The COE Method?

In the Electric Resistance Welding process, ERW pipe is made by shaping a flat sheet of steel into a cylindrical shape first. A current is passed between the steel cylinder’s two edges to heat the steel to the point where the edges are pressed together with no welding material required.

What Is The Difference Between LSAW Pipe And SSAW Pipe?

LSAW and SSAW are SAW (submerged arc welded) pipe variations. The distinction between them is the technique in which they are welded. In LSAW pipes, the welding is longitudinal, meaning that steel (hot-rolled coil plate) is rolled into a pipe and the seam is longitudinally welded. In SSAW, steel coils are spirally welded, like a helix, such that the coil (strip) adopts the shape of a pipe. SAW pipes are mostly used for transporting oil and gas.

LSAW Pipe

LSAW Pipe

  • Relatively Expensive In Price
  • Welding Direction: Longitudinal Direction
  • Production Efficiency:Low Efficiency
  • Outer Diameter: 16 Inch To 60 Inch
  • Main Application: Medium/High Pressure
  • Thickness Tolerance: Relatively Accurate
  • Geometry Accuracy: High

SSAW Pipe

  • Low Cost
  • Welding Direction: Spiral Direction
  • Production Efficiency:High Efficiency
  • Outer Diameter: 20 Inch To 100 Inch
  • Main Application: Construction
  • Thickness Tolerance: Relatively Accurate
  • Geometry Accuracy: Low
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SSAW Pipe

SSAW pipes are often utilized for diameters greater than 20 inches NPS (Outside Diameter). The spiral welded pipe has a circular cross-section and is formed using double wire-double-sided submerged arc welding, an ae/a technique. This material has excellent strength, low porosity, and low permeability, making it suitable for oil and natural gas. The hydrostatic test, tensile strength, and cold bending performance of the weld joint must conform to the specifications for the SSAW pipe.

SSAW Pipe

SSAW Pipe Specifications

Our SSAW pipes are produced using the Spiral Submerged Arc Welding procedure, ensuring high strength and durability. Available in various dimensions and steel grades, these pipes meet stringent production standards. The surface coatings applied provide additional protection against environmental factors. We offer different end types and joint methods, all machined to precision. SSAW pipes are commonly used in applications like water supply, construction, and oil and gas industries.

SSAW Pipe
ProcedureSSAW (Spiral Submerged Arc Welding)
Dimensions219.1mm ~ 2032mm
8″ ~ 80″
DN200~ DN2000
Thickness6mm ~ 25.4mm
SCH 20~SCH XXS
Unit Length3 ~ 18 mtrs
StandardsAPI 5L
ASTM A53
EN 10217
EN 10219
ASTM A500
Surface CoatingVarnishing, Oiling, Hot Dip Galvanizing
FBE, 2PP, 3PP, 2PE, 3PE
End TypePlain, Bevelled, Threaded, Grooved
Joint MethodFitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe MachiningWelding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding
ApplicationOil & Gas, Water Transmission, Solar Energy, Fire Fighting, Construction, Piling Work, Mechanical Engineering, Fabrication

What is SSAW Pipe?

The production of SSAW pipe is a continuous operation. After the steel coil is unwound, it is flattened and shaped by angled rollers into a cylinder of the necessary diameter. Two spirals are joined by an interior and exterior weld seam to produce the pipe. A cross-seam is created by butt-welding a new coil to the trailing edge of the pipe at the end of the coil. The pipe is cut to length and, if necessary, its ends are beveled before being examined for quality control.

SSAW Pipe

The size range for SSAW pipe is 24 inches to 144 inches, and it is generally used for water distribution service due to its resistance to corrosion and ability to handle high pressures and temperatures in the presence of hostile media such as brines or other chemicals.

What is SSAW Pipes Used for?

Due to the fact that SSAW pipe can withstand a significant amount of pressure, it is utilized in a wide variety of construction applications. Piling, structural applications, water pipelines, slurry pipelines, dredge pipelines, and other types of pipelines are some of the uses for SSAW pipe.

SSAW Pipe

Oil & Gas

Construction

Water Transmission

Piling Work

Steel Fabrication

Mechanical Engineering

What Is SSAW Pipe Manufacturing Process?

The production of SSAW pipes using the spiral welding technique is one of the most efficient and cost-effective methods available. Typically, a helical submerged arc weld is utilized in the production of spiral welded pipe, which is made from steel coil. The configuration of spiral welded pipe mills enables a considerable degree of flexibility, which makes it possible to manufacture a broad variety of pipe sizes and wall thicknesses.

SSAW Pipe

What Is The Difference Between SSAW Pipe And LSAW Pipe?

SSAW Pipe and LSAW Pipe are both SAW (submerged arc welded) pipe types often utilized for oil and gas transportation. The process through which they are welded distinguishes them. Steel coils are spirally welded, like a helix, in SSAW, such that the coil (strip) takes on the shape of a pipe. The welding of LSAW pipes is longitudinal, which means that steel (hot-rolled coil plate) is rolled into a pipe and the seam is longitudinally welded.

SSAW Pipe

SSAW Pipe

  • Low Cost
  • Welding Direction: Spiral Direction
  • Production Efficiency:High Efficiency
  • Outer Diameter: 20 Inch To 100 Inch
  • Main Application: Construction
  • Thickness Tolerance: Relatively Accurate
  • Geometry Accuracy: Low

LSAW Pipe

  • Relatively Expensive In Price
  • Welding Direction: Longitudinal Direction
  • Production Efficiency:Low Efficiency
  • Outer Diameter: 16 Inch To 60 Inch
  • Main Application: Medium/High Pressure
  • Thickness Tolerance: Relatively Accurate
  • Geometry Accuracy: High
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SMLS Pipe

An SMLS pipe is a pipe that has no welding seam. A seamless piping design can create several benefits such as increased strength and a smooth interior finish that is rust-resistant. Commercial, industrial, and residential customers will typically choose seamless pipes for their durability in various applications.

SMLS Pipe Specifications

Our SMLS pipes are produced through a meticulous production procedure that ensures a seamless and uniform structure. These pipes are available in various dimensions and steel grades, each designed to meet different industry standards. The surface coatings applied enhance their durability and resistance to corrosion. The end types and joint methods can be customized to meet specific application requirements. These pipes are machined to perfection and find extensive applications in industries like chemical, petrochemical, and power generation.

ProcedureSMLS (Seamless)
Dimensions13.7mm ~914mm
1/4″ ~ 36″
DN8~ DN900
Thickness1.65mm ~30.96mm
SCH 5S ~SCH XXS
Unit Length3 ~ 18 mtrs
StandardsAPI 5L/API 5CT
ASTM A106
ASTM A179/ASTM A789/ASTM A333
ASTM A192
ASTM A210
ASTM A213
ASTM A312
DN17175/EN10216 /DIN1629
DIN2391/EN10305-1
Surface CoatingVarnishing, Oiling, Hot Dip Galvanizing
FBE, 2PP, 3PP, 2PE, 3PE
End TypePlain, Bevelled, Threaded, Grooved
Joint MethodFitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe MachiningWelding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding
ApplicationOil & Gas, Water Transmission, Solar Energy, Fire Fighting, Construction, Piling Work, Mechanical Engineering, Fabrication
SMLS Pipe

What is SMLS Pipe?

An SMLS pipe is a pipe without any welded connections. Idealistically, the seamless pipe will be a solid metal pipe with each end welded directly to another pipe.

Typically, a seamless pipe begins as a billet, a solid cylindrical hunk of steel. The billet is pierced in the center with a mandrel while it is still hot. The hollow billet is next rolled and stretched; this operation minimizes internal tensions and eliminates burrs from the interior of the pipe. After being rolled and stretched, the pipe is warmed to produce exact dimensions and thoroughly harden its surface.

SMLS steel pipe is widely used in engineering and construction; it is a hollow steel strip with no seams; it is primarily used to transport liquids through pipelines; it has a distinct appearance and is made of a heavy type of steel; it has a high resistance to corrosion and is resistant to general corrosion. This quality allows seamless steel tubes to have a longer lifespan, but what is essential is that they are extremely pure and free of contaminants.

Seamless steel pipe has a high mechanical resistance, regardless of how high the temperature is, seamless steel pipe is uninterested in impact, it is installed and the other pipe is the same, it can replace other piped water and other fluids.

Where SMLS Pipes are Used?

Due to superior mechanical strength and absence of seams, SMLS pipes are frequently used as water wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, and arched brick pipes. Specifically throughout the nuclear, natural gas, petrochemical, shipbuilding, and boiler sectors.

Oil & Gas

Construction

Water Transmission

Piling Work

Solar Energy

Mechanical Engineering

Fire Fighting

Steel Fabrication

How is SMLS Pipe Made?

A cylindrical bar of steel is used to produce SMLS pipe. After heating the bar to a high temperature, a probe is put into the cylinder to produce a hole. The cylinder is then moved to rollers that shape it to the required diameter and wall thickness.

What is the Difference between SMLS Pipe and Seamed Pipe?

SMLS pipe is made using an extrusion method, which involves inflating a cylindrical metal tube through an opening in a die and then cutting it to lengths. The seamless pipe has no welded joint; thus, it has more strength and higher pressure capacity than equivalent size seamed pipes. The seamed pipe is made in a rolling process, which means that the welded joint is formed during production.

SMLS Pipe

  • High In Price
  • No Welded Joint
  • Raw Material: Solid Round Billets
  • Outer Diameter: 1/8 Inch To 26 Inch
  • Main Application: High-Pressure
  • Thickness Tolerance: Instability
  • Length Tolerance: Instability

Seamed Pipe

  • Relatively Cheap In Price
  • A Welded Joint In Its Cross-Section
  • Raw Material: Steel Coils
  • Outer Diameter: 2-3/8 Inch To 24 Inch
  • Main Application: Low/ Medium Pressure
  • Thickness Tolerance: Relatively Accurate
  • Length Tolerance: Relatively Accurate
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MS ERW Pipe With  Full Form

ERW (Electrical Resistance Welding) pipes are made by cold forming steel coil into a round cylindrical shape. ERW pipe is formed of steel coil, and the weld seam runs parallel to the pipe. Because the breadth of the coil is the same as the circle of the pipe, widths are limited to 24 inches. It is used to transport oil, natural gas, and other vapor-liquid items and may meet a variety of high and low pressure requirements.

ERW Pipe Specifications

Our ERW pipes are manufactured with precision, adhering to the highest industry standards. These pipes, with dimensions customizable to client needs, are produced through an electric resistance welding procedure. We offer a variety of steel grades, each selected for optimal performance. The surface of each pipe is meticulously coated to enhance durability and resistance to environmental factors. Our ERW pipes come with different end types and joint methods, ensuring compatibility with various systems. They undergo rigorous machining for a flawless finish and are widely used in oil and gas industries, among others.

ProcedureERW (Electrical Resistance Weld)
Dimensions21.3mm ~ 610mm
1/2″ ~ 24″
DN15~ DN600
Thickness2mm ~ 17.48mm
SCH 5S ~SCH XXS
Unit Length3 ~ 18 mtrs
StandardsAPI 5L
API 5CT
ASTM A53
ASTM A795
AS 1163
EN 10217
EN 1029
JIS G3444
JIS G 3452
ASTM A500
BS 1387
Surface CoatingVarnishing, Oiling, Hot Dip Galvanizing
FBE, 2PP, 3PP, 2PE, 3PE
End TypePlain, Bevelled, Threaded, Grooved
Joint MethodFitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe MachiningWelding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding
ApplicationOil & Gas, Water Transmission, Solar Energy, Fire Fighting, Construction, Piling Work, Mechanical Engineering, Fabrication
Full Form

What is ERW Pipe?

ERW pipe is an abbreviation of Electric Resistance Welded Steel tube. They are manufactured from a continuous cold-rolled strip by passing through an electric resistance weld machine. This pipe is more resistant to corrosion, due to the lack of lap joints. It has good mechanical properties, is easy and quick to install, and does not require expensive equipment. The high-frequency control technology can control the corrosion resistance and mechanical properties of the welds so that the quality of production becomes stable and reliable.

ERW pipe is mainly used in the transportation of oil, natural gas, and other vaporous-liquid objects. In order to meet different needs for high and low-pressure operation, ERW steel tubes have been developed into various specifications, according to their properties.

Where ERW Pipes are Used?

ERW pipes are broadly used by the industries for their excellent properties, durability, and cost-effectiveness. The top application areas of ERW pipes include construction, water and gas conveyance, automobile sector, oil country tubulars (OCTG), and power generation projects. These pipes offer great strength, toughness, and durability to the end-users.


Oil & Gas

Construction

Water Transmission

Piling Work

Solar Energy

Mechanical Engineering

Fire Fighting

Steel Fabrication

How is ERW Pipe Made?

In the Electric Resistance Welding process, ERW pipe is made by shaping a flat sheet of steel into a cylindrical shape first. A current is passed between the steel cylinder’s two edges to heat the steel to the point where the edges are pressed together with no welding material required.

What is Difference between ERW and Seamless Pipe?

ERW pipe is made in a rolling process, which means that the welded joint is formed during production. This type of pipe is mostly used in low/medium pressure applications such as water/oil transportation. Seamless pipe is made using an extrusion method, which involves inflating a cylindrical metal tube through an opening in a die and then cutting it to lengths. The seamless pipe has no welded joint; thus, it has more strength and higher pressure capacity than equivalent size ERW pipes. As a result, seamless steel pipe is widely used in the high-pressure equipment and thermal boiler industries.

ERW Pipe

  • Relatively Cheap In Price
  • A Welded Joint In Its Cross-Section
  • Raw Material: Steel Coils
  • Outer Diameter: 2-3/8 Inch To 24 Inch
  • Main Application: Low/ Medium Pressure
  • Thickness Tolerance: Relatively Accurate
  • Length Tolerance: Relatively Accurate

Seamless Pipe

  • High In Price
  • No Welded Joint
  • Raw Material: Solid Round Billets
  • Outer Diameter: 1/8 Inch To 26 Inch
  • Main Application: High-Pressure
  • Thickness Tolerance: Instability
  • Length Tolerance: Instability

Contact Us Get More Full Form

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