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Welded Steel Pipe (ERW Pipe) Manufacturer | Carbon Steel Tube & Structural Pipe Supplier – Royal Steel Group

Welded steel pipe, also known as resistance welded pipe (ERW pipe), is one of the most commonly used carbon steel pipe products in the construction, infrastructure, and industrial sectors.

Royal Steel Group is a professional Wholesale Carbon Steel Pipe manufacturer with high quality welded pipe products such as ERW square tubes, engineering steel pipes, structural steel round pipes for worldwide projects.

Manufacturing Process of ERW Pipe

Hot-rolled steel coils are processed into ERW pipes through forming and welding processes, as follows:

1. Steel coil unrolling
2. Roll forming into elliptical and circular tubular shapes
3. High-frequency resistance welding (HFRW)
4. Sizing and straightening
5. Length cutting

The entire process is carried out under strict control to ensure the precision and quality of the welded pipes.

welded pipes
welded tubes

Applications of Structural Steel Pipe

Our welded pipes and structural steel pipes are widely used in the following industries:

Steel structure construction – From design to materials, steel frame structures are becoming increasingly mature and have become a popular structural form.

Building frames and supports
Substructure and bridge design
Machinery manufacturing
Scaffolding installation systems and structural sequences
Low-pressure fluid transportation

galvanized steel pipe application

ERW Pipe vs Seamless Pipe

Feature ERW Steel Pipe Seamless Steel Pipe
Cost Lower Higher
Strength High Very High
Application Structural High-pressure
Surface Smooth Rougher

 

Due to the cost and performance advantages, ERW pipes have become the most sought after in most of the structural applications. 

Why Choose ROYAL STEEL GROUP?

As a trusted ERW welded pipe supplier, we offer:

Welded pipe products: Ample stock (some sizes ship within 7 days)

Global fast shipping (long-term partnerships with reputable freight companies such as MSK and MSC)

Compliant with ASTM/EN/JIS standards, rigorous quality control

Highly competitive factory prices

Customizable sizes and specifications

Our Royal Pipe solutions are trusted by contractors and distributors in Southeast Asia, the Middle East, and South America.

Case Studies:  API 5L Grade B Steel Pipes with FBE Coating for Guatemala Subsea Gas Pipeline Maintenance

ROYAL GROUP

Address

Kangsheng development industry zone,
Wuqing district, Tianjin city, China.

E-mail

sales01@royalsteelgroup.com

Phone

Sales Manager: +8613652091506

Hours

Monday-Sunday: 24-hour Service

Post time: Apr-13-2026