Welded Round Steel Pipe (ERW)

Welded Round Steel Pipe (ERW)

1. Introduction: 2. ASTM A214 (1)The standard covers minimum-wall-thickness, ERW, carbon steel tubes can be used for heat ex-changers, condensers and similar heat-transfer apparatus. (2)The welded steel pipes shall be made by electric-resistance welding. (3)Specification: OD ≤76.2mm. Mechanical...

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ASTM A214 ERW Seam Welded Steel Pipes

Material

ASTM A214 ERW seam welded steel pipes are fabricated using low carbon steel plates. The pipes are produced through the electric resistance welding process, which involves the formation of a seam by applying high-frequency electric currents to the edges of the plate. This results in a strong and durable pipe suitable for various applications.


Specification

  • Size Range: 1/2" to 24"
  • Wall Thickness: Up to 25mm
  • Length: Customizable
  • Outer Diameter: Up to 660mm
  • Standards: ASTM A214, ASTM A178, DIN 17175, EN 10217-1, etc.


Key Features

  1. High Strength: ASTM A214 ERW seam welded steel pipes possess excellent strength and resistance to deformation, making them suitable for demanding applications.
  2. Corrosion Resistance: The pipes have a protective coating that enhances their resistance to corrosion in various environments.
  3. Uniformity: The electric resistance welding process ensures consistent and uniform welds throughout the length of the pipe, ensuring its structural integrity.
  4. Cost-Effective: These pipes are a cost-effective alternative to seamless pipes, without compromising on performance and strength.
  5. Versatility: ASTM A214 ERW seam welded steel pipes can be used in a wide range of industries, including oil and gas, construction, automotive, and more.


Chemical Composition

The chemical composition of ASTM A214 ERW seam welded steel pipes is as follows:

ElementComposition(%)
Carbon0.18 max
Manganese0.27 - 0.63
Phosphorus0.035 max
Sulfur0.035 max


Mechanical Properties

The mechanical properties of ASTM A214 ERW seam welded steel pipes are:

PropertyValue
Tensile Strength345 MPa min
Yield Strength195 MPa min
Elongation20% min
HardnessHRB 72 max


Physical Properties

Some of the physical properties of ASTM A214 ERW seam welded steel pipes are:

PropertyValue
Density7.85 g/cm³
Thermal Conductivity50 W/m·K
Electrical Conductivity14.17 MS/m
Modulus of Elasticity200 GPa


Process Performance

The process performance characteristics of ASTM A214 ERW seam welded steel pipes are:

CharacteristicValue
WeldabilityExcellent
FormabilityGood
MachinabilityFair
Heat TreatmentAnnealing required


Steel Grade

The steel grade suitable for ASTM A214 ERW seam welded steel pipes is ASTM A214 Gr.A.


Application

ASTM A214 ERW seam welded steel pipes find extensive application in various industries, including:

  • Oil and gas pipelines
  • Petrochemical plants
  • Power generation
  • Boiler tubes
  • Heat exchangers
  • Structural applications


Possible Alternative Grades

Some alternative grades that can be considered as substitutes for ASTM A214 ERW seam welded steel pipes include:

  1. ASTM A178 ERW steel pipes
  2. DIN 17175 seamless steel pipes
  3. EN 10217-1 welded steel pipes 

 

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