SMLS Pipe Manufacturer

carbon seamless steel pipe manufacturer

An seamless pipe(SMLS Pipe) is a pipe that has no welding seam. Commercial, industrial, and residential customers will typically choose seamless pipes for their durability in various applications.

UNIASEN’s seamless pipes are available in various dimensions and steel grades, each designed to meet different industry standards. If you want to wholesale seamless steel pipes, be sure to refer to the following parameters.

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Seamless Pipe Specifications

ProcedureSMLS (Seamless)
Dimensions13.7mm ~914mm
1/4″ ~ 36″
DN8~ DN900
Thickness1.65mm ~30.96mm
Unit Length3 ~ 18 mtrs
StandardsAPI 5L/API 5CT
DN17175/EN10216 /DIN1629
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

Advantages of Seamless Pipe

The status of seamless steel pipes is very important in various fields, especially in applications that require high quality, high performance and high safety. Its unique advantages and versatility make it one of the materials of choice for many engineering and manufacturing projects. Here are its main advantages:

  • Uniformity
  • high strength
  • Corrosion resistance

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.

Application of seamless carbon steel pipe

Due to superior mechanical strength and absence of seams, seamless steel pipe is 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.

Seamless vs Welded 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.

Seamless Pipe

  • Price 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

Welded 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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