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ERW Steel Pipe

Keywords: ERW Pipe, ERW Steel Pipe, Electric Resistance Welded Pipe, HFW Pipe, ERW Black Pipe

Size: OD: 21.3mm ~ 660mm;WT: 1mm ~ 17.5mm; LENGTH: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL, DRL)

Standard & Grade : ASTM A53, Grade A/B/C

Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends

Usage: For Low Pressure Fluid Transmission, Machinery Manufacturing

Packing: Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped

End: Plain Ends / Beveled Ends

Finish: No.1 Pickled Finish, BA Finish, No.4 finish, Electropolished Seamless Steel Pipes

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Specification
Standard
Painting & Coating
Packing & Loading
FAQ

(1) ERW welded pipe from steel plate welding into the round pipe, divided into high frequency resistance welded pipe (ERW welded pipe), straight seam arc welding pipe (LSAW), spiral welded pipe.Electrical engineering with "SC", can be used as water gas pipe can also be used as threading pipe, relatively thick.

(2) Pipeline pipe, also known as wire pipe, is relatively thin, denoted by "T", and can only be used for thread. ERW steel pipe , Electric Resistance Welded Pipe

(3) ERW tube is "high frequency resistance welding steel tube", and the common welding process is different, the weld line is from the base material of the steel belt body melted, the mechanical strength is better than the general welded. ERW stands for resistance welding, resistance welding has the characteristics of high production efficiency, low cost, material saving and easy automation, so it is widely used in aviation, aerospace, energy, electronics, automotive, light industry and other industrial sectors, is one of the important welding processes.

Production Process for ERW Steel Pipe:

1. Uncoiling --- 2. Leveling --- 3. End cutting --- 4. End shearing welding --- 5. Super coil accumulator --- 6. Edge cutting --- 7. Ultrasonic detection --- 8. Forming --- 9. Electric induction welding --- 10. Ultrasonic detection for weld seam --- 11. Medium frequency heat treatment --- 12. Air cooling --- 13. Water cooling --- 14. Sizing --- 15. Flying cutting --- 16. Flush-out --- 17. Cropping --- 18. Flattening testing --- 19. Straightening --- 20. End facing and bevelling --- 21. Hydrodynamic testing --- 22. Ultrasonic detection for weld seam --- 23. Ultrasonic detection for pipe end --- 24. Visual and dimensions inspection --- 25.Weighting and measuring --- 26. Marking --- 27. Coating --- 28. Pipe-end protection --- 29. Bending --- 30. Shipping

Process-of-Carbon-ERW-Steel-Pipe

Main Characteristics of ERW Steel Pipes:
High-security welding seam: as a result of special welding method of melting of the parent metal together without filler metal, the welding property is better and the welding seam is much smaller than spiral welded pipes.
Cost effective and short production period A wide range of thickness/diameter ratio, covering hundreds of specification
In –line inspection and testing

Application of ERW Pipes:
- Casing and tubing: lined inside drilling well. Seamless pipes use to be the only choice for lining pipes inside drilling well, but as the worldwide acknowledgement of ERW pipe’s high-quality weld seam and the cost-effective, more and more projects have been choosing ERW instead of seamless pipe.
- Constructional structural pipes(round, square and rectangular): round, square and rectangular ERW structural pipes are widely used in frameworks of shopping centres, theatres, airports, bridges, workshops etc.
- Low-pressure flow transmitting: ERW pips are also used in water supply; cooling water supply for plants and equipment; low pressure thermal distributing; coal slurry transportation and more.
- Pipes for raw materials in the manufacturing industry: automobile vent-pipe; low and intermediate pressure boiler pipes; bulk matters transportation pipes.
- Other application: piling pipes, furniture fabricating and more.

Inch

0.157

0.173

4.4

0.205

5.2

0.22

5.6

0.25

6.4

0.28

7.1

0.312

7.9

0.344

8.7

0.375

9.5

0.406

10.3

0.5

12.7

0.562

14.3

8 5/8

219.1

✓

10 3/4

273.1

✓

12 3/4

323.9

✓

355.6

✓

406

✓

457

✓

508

✓

559

✓

610

✓

Inch

0.157

0.173

4.4

0.205

5.2

0.22

5.6

0.25

6.4

0.28

7.1

0.312

7.9

0.344

8.7

0.375

9.5

0.406

10.3

0.5

12.7

0.562

14.3

8 5/8

219.1

✓

10 3/4

273.1

✓

12 3/4

323.9

✓

355.6

✓

406

✓

457

✓

508

✓

559

✓

610

✓

Tolerances of Outside Diameter – ERW Steel Pipe

Tolerances-of-Outside-Diameter-Carbon-ERW-Steel-Pipe

Tolerances of Wall Thickness – ERW Steel Pipe

Tolerances-of-Wall-Thickness-Carbon-ERW-Steel-Pipe

Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings

Manufacturing-Process-Carbon-ERW-Steel-Pipe

Standards & Specifications: Which standards do our Carbon Steel Pipes comply with?

Q: I need carbon steel pipes for a high-temperature application. Do you supply pipes according to ASTM or EN standards, and how do I choose the right grade?
A: Yes, we strictly manufacture and export pipes according to international standards.
For general structural use and pressure lines, we supply ASTM A53 Gr. B and ASTM A106 Gr. B.
For high-temperature services (boilers/refineries), ASTM A106 Gr. B/C or ASTM A335 (Alloy) is recommended, while API 5L is exclusively for oil and gas transmission lines.
For the European market, we comply with EN 10217 (welded) and EN 10216 (seamless) standards .
We always provide Mill Test Certificates (MTC) verifying the chemical composition and mechanical properties.

Export Licenses & Compliance: What is the "Export License" situation for 2025-2026?

Q: I heard China has new restrictions on steel exports. Can you ship Carbon Steel Pipes without issues in 2026?
A: As of January 1, 2026, China requires export licenses for specific steel products classified under HS Code Chapters 72 and 73 (7301-7307) .
We manage this for you: We handle the application for the Export License with the Ministry of Commerce, submitting the export contract and quality inspection certificates.
Dual-Use Items: For high-strength, corrosion-resistant alloy pipes used in specific industrial sectors, we ensure compliance with the "Dual-Use Item" permit requirements if applicable .

Minimum Order Quantity (MOQ) & Customization

Q: I only need a small batch of large-diameter pipes (20 ft) for a specific project. Do you accept small orders?
A: Yes. While standard sizes are stocked, we accept low MOQs for custom sizes. We support customized moulds for non-standard diameters and specific lengths (random or fixed) .

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Tags : ERW steel pipe , electric resistance welded pipe , ASTM A53 ERW pipe , API 5L ERW pipe , ERW black steel pipe , galvanized ERW pipe , ERW carbon steel pipe , ERW line pipe , ERW structural pipe , ERW gas pipe