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ERW Steel Pipe

ERW Steel Pipe

Our carbon steel ERW (Electric Resistance Welded) pipes combine cost-effectiveness with exceptional durability. Utilizing high-frequency welding technology, these pipes are perfect for low to medium-pressure systems, offering a smooth interior surface and consistent quality for a wide range of applications.


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ERW Steel Pipe Sizes

Outer Diameter (OD): 1" – 24" (33.4mm – 609.6mm)

Wall Thickness (WT): 1.8mm-14mm
Length: 5.8m, 6m, 12m, or Customized


Steel Grade:
API 5L: PSL1/PSL2  Gr.A, Gr.B, X42, X46, X52, X56, X60, X65, X70
ASTM A53: GR.A, GR.B,ASTM A500 JIS G3466
EN: S275, S275JR, S355JRH, S355J2H,EN10219-1 ,EN10217-1


Production Process
Material Selection: High-quality carbon steel coils are selected.
Forming: The coils are formed into a cylindrical shape using precision rollers.
Welding: The edges are welded using high-frequency induction welding.
Heat Treatment: Normalizing is performed to enhance mechanical properties.
Finishing: The pipes are polished, cleaned, and inspected to meet international standards.


Types of ERW Steel Pipe


Type

Description

Common Standards

Carbon Steel ERW Pipe

Manufactured from carbon steel coils, carbon steel ERW pipes feature low cost, good machinability, and wide applicability, and are commonly used in fluid transportation, structural construction, and industrial piping systems.

ASTM A53, ASTM A500, API 5L, EN 10219

ERW Line Pipe

ERW line pipes are mainly used for oil, gas, water, and other fluid transmission applications, offering reliable strength, weld integrity, and pressure resistance.

API 5L Gr.B, X42, X52, X60

ERW Structural Pipe

Designed for structural and construction applications, ERW structural pipes provide excellent dimensional accuracy, load-bearing performance, and weldability for buildings, bridges, and machinery.

ASTM A500, EN 10219, JIS G3444

ERW Boiler Tube

ERW boiler tubes are widely used in boilers, heat exchangers, and pressure equipment, providing good heat resistance, pressure performance, and dimensional stability.

ASTM A178, ASTM A214, EN 10217

ERW Mechanical Tube

ERW mechanical tubes are used in machinery, automotive components, hydraulic equipment, and precision engineering, featuring high dimensional precision, smooth surface finish, and good processing performance.

ASTM A513, DIN 2391, EN 10305

ERW Casing & Tubing

ERW casing and tubing are primarily used in oil and gas drilling and extraction operations, offering strong sealing capability, pressure resistance, and corrosion protection.

API 5CT

High Frequency ERW Pipe (HFW Pipe)

Produced using high-frequency electric resistance welding technology, HFW pipes provide fast production speed, stable weld quality, and high manufacturing efficiency.

API 5L, ASTM A53, EN 10219

Mild Steel ERW Pipe

Made from low-carbon steel materials, mild steel ERW pipes offer good ductility, weldability, and cost efficiency for general structural and low-pressure piping applications.

Q235, ASTM A53 Grade A

Alloy Steel ERW Pipe

Alloy steel ERW pipes contain alloying elements such as chromium, molybdenum, and nickel to improve strength, wear resistance, and high-temperature performance.

ASTM A335, ASTM A691

Black ERW Steel Pipe

Black ERW steel pipes retain their original black mill finish, offering economical production and easy fabrication for structural and general industrial applications.

ASTM A53, API 5L

Galvanized ERW Pipe

Galvanized ERW pipes use hot-dip or pre-galvanizing processes to improve corrosion resistance and are widely applied in water supply, fire protection, fencing, and outdoor structures.

ASTM A53, ASTM A795, BS 1387

Coated ERW Pipe

Coated ERW pipes utilize surface treatments such as 3PE, FBE, epoxy, or anti-corrosion coatings to enhance durability in underground pipelines, marine engineering, and oil & gas transportation.

API 5L, DIN 30670

Plain End ERW Pipe

Plain end ERW pipes feature smooth pipe ends for easy cutting, fabrication, and connection in general piping and structural applications.

ASTM A53, ASTM A500

Beveled End ERW Pipe

Beveled end ERW pipes are manufactured with beveled pipe ends to facilitate field welding installation in oil & gas, pressure piping, and industrial systems.

API 5L, ASTM A53

Threaded & Coupled ERW Pipe

Threaded & coupled ERW pipes use threaded ends and couplings for convenient installation and maintenance in fire protection, water supply, and low-pressure piping systems.

ASTM A53, ASTM A795, BS 1387


Applications of ERW Steel Pipe


Oil & Gas Industry

ERW steel pipes are widely used in the oil and gas industry for the transportation of crude oil, natural gas, petroleum products, and other industrial fluids due to their reliable weld quality and good pressure resistance.

Water Transmission Systems

ERW steel pipes are commonly applied in water supply, drainage, irrigation, and municipal pipeline systems, offering an economical and efficient solution for fluid transportation.

Construction & Structural Engineering

In construction and structural engineering, ERW steel pipes are used for steel structures, buildings, bridges, scaffolding, and support frameworks because of their good strength and dimensional accuracy.

Mechanical Manufacturing

ERW steel pipes are widely used in machinery manufacturing, automotive components, hydraulic systems, and equipment fabrication, benefiting from their excellent machinability and processing performance.

Fire Protection Systems

Due to their stable performance and durability, ERW steel pipes are frequently used in fire sprinkler systems, fire protection pipelines, and emergency water supply networks.

Boiler & Heat Exchanger Equipment

Certain grades of ERW pipes are suitable for boilers, heat exchangers, and pressure equipment, providing reliable performance in heat transfer and industrial thermal systems.

Pile & Foundation Projects

ERW steel pipes are often used in piling and foundation applications for buildings, ports, bridges, and infrastructure projects, providing strong structural support.

Industrial Piping Systems

ERW steel pipes are extensively used in chemical plants, power plants, factories, and general industrial piping systems for transporting liquids, gases, and process media.

Agricultural Applications

In the agricultural sector, ERW steel pipes are used for irrigation pipelines, greenhouse structures, water delivery systems, and other farming infrastructure applications.

Fencing & Outdoor Structures

ERW steel pipes are also widely used in fencing, guardrails, poles, outdoor frameworks, and various steel construction projects due to their versatility and cost-effectiveness.


Specification


INCH

OD

(MM)

Strandard Wall Thickness

SCH 10WT

(mm)

SCH 20WT

(mm)

SCH 40WT

(mm

SCH 60WT

(mm)


SCH 80WT

mm)



SCH 100WT

(mm)



SCH 160WT

mm)



XXS

(mm)


1"

33.4

2.77

3.38

4.55

6.35

9.09

1-1/4"

42.2

2.77

3.56

4.85

6.35

9.7

1-1/2"

48.3

2.77

3.68

5.08

7.14

10.15

2"

60.3

2.77

3.91

5.54

8.74

11.07

2-1/2"

73

3.05

5.16

7.01

9.53

14.02

3"

88.9

3.05

5.49

7.62

11.13

15.24

3-1/2"

101.6

3.05

5.74

8.08

4"

114.3

3.05

4.5

6.02

8.56

13.49

17.12

5"

141.3

3.4

6.55

9.53

15.88

19.05

6"

168.3

3.4

7.11

10.97

18.26

21.95

8"

219.1

3.76

6.35

8.18

10.31

12.7

15.09

23.01

22.23

10"

273

4.19

6.35

9.27

12.7

15.09

18.26

28.58

25.4

12"

323.8

4.57

6.35

10.31

14.27

17.48

21.44

33.32

25.4

14"

355

6.35

7.92

11.13

15.09

19.05

23.83

36.71

16"

406

6.35

7.92

12.7

16.66

21.44

26.19

40.49

18"

457

6.35

7.92

14.27

19.05

23.83

29.36

46.24

20"

508

6.35

9.53

15.09

20.62

26.19

32.54

50.01

22"

559

6.35

9.53

22.23

28.58

34.93

54.98

24"

610

6.35

9.53

17.48

24.61

30.96

38.89

59.54



Chemical Analysis and Mechanical Properties


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

1.2

0.03

0.03

415

245

X42

0.26

1.3

0.03

0.03

415

290

X46

0.26

1.4

0.03

0.03

435

320

X52

0.26

1.4

0.03

0.03

460

360

X56

0.26

1.4

0.03

0.03

490

390

X60

0.26

1.4

0.03

0.03

520

415

X65

0.26

1.45

0.03

0.03

535

450

X70

0.26

1.65

0.03

0.03

570

485

PSL2

B

0.22

1.2

0.025

0.015

414

241

X42

0.22

1.3

0.025

0.015

414

290

X46

0.22

1.4

0.025

0.015

434

317

X52

0.22

1.4

0.025

0.015

455

359

X56

0.22

1.4

0.025

0.015

490

386

X60

0.22

1.4

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


 

 

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