ERW Line Pipe

ERW Line Pipe

Electric Resistance Welded Line Pipe-ERW Line Ppipe ERW steel pipe is formed by rolling plate and welding the seam. It is cost-effective steel pipe with tighter Dimensional tolerances and less weight. The weld seam is heat treated after welding without untempered martensite remains. Also, the...

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Electric Resistance Welded Line Pipe-ERW Line Ppipe

ERW steel pipe is formed by rolling plate and welding the seam.

It is cost-effective steel pipe with tighter Dimensional tolerances and less weight. The weld seam is heat treated after welding without untempered martensite remains. Also, the weld flash can be removed from both inner and outer surfaces.

Tolerance of Outside Diameter

Standard

Out Diameter

Tolerance of Pipe End

Tolerance of Pipe Body

API 5L

219.1~273.1

+1.6mm, -0.4mm

±0.75%

274.0~320

+2.4mm, -0.8mm

±0.75%

323.9~457

+2.4mm, -0.8mm

±0.75%

508

+2.4mm, -0.8mm

±0.75%

559~610

+2.4mm, -0.8mm

±0.75%


    Tolerance of Wall Thickness

Standard

Grade

Out Diameter

Wall Thickness

API 5L

A

219.1~457

+15%, -12.5%

B

508~610

+17.5%, -12.5%

X42-X80

508~610

+19.5%, -8%


    Chemical Analysis and Mechanical Properties

Standard

Class

Grade

Chemical Analysis(%)

Mechanical Properties(min)(Mpa)

C

Mn

P

S

Tensile Strength

Yield Strength

API 5L

PSL1

B

0.26

1.20

0.030

0.030

414

241

X42

0.26

1.30

0.030

0.030

414

290

X46

0.26

1.40

0.030

0.030

434

317

X52

0.26

1.40

0.030

0.030

455

359

X56

0.26

1.40

0.030

0.030

490

386

X60

0.26

1.40

0.030

0.030

517

414

X65

0.26

1.45

0.030

0.030

531

448

X70

0.26

1.65

0.030

0.030

565

483

PSL2

B

0.22

1.20

0.025

0.015

414

241

X42

0.22

1.30

0.025

0.015

414

290

X46

0.22

1.40

0.025

0.015

434

317

X52

0.22

1.40

0.025

0.015

455

359

X56

0.22

1.40

0.025

0.015

490

386

X60

0.22

1.40

0.025

0.015

517

414

X65

0.22

1.45

0.025

0.015

531

448

X70

0.22

1.65

0.025

0.015

565

483

X80

0.22

1.85

0.025

0.015

621

552

Specification of ERW line pipe

  • Available sizes: 2 3/8 in. – 30 in. outer diameter (OD).

  • Wallthickness: 2-19mm

  • Grades:  API 5L B, X42, X52, X60, X65, X70

  • Standard:  API 5L, ASTM  A53-B, GB/T9711

  • Coating/Overlay Options: Fusion Bonded Epoxy, PowerCrete / Abrasion-resistant overlay (ARO), and other customer-specific coatings

  • End Finishing: Plain-end, beveled for welding; Zap-Lok



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