Welded pipe

Welding pipes can be divided into long welding steel pipes, spiral welding steel pipes, and precision welding steel pipes.The main materials used in national standard welded steel pipes are Q235A, Q235B, Q235C, 20#, Q345 (16Mn), L245(B).It is characterized by simple process, high production efficiency, many varieties and specifications, and low equipment investment.The length can be 6 meters, 8 meters, 9 meters, or 12 meters, and can as required.

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Industrial Welded Steel Pipe: ERW, LSAW & SSAW

Name: Industrial Welded Steel Pipe (ERW, LSAW, SSAW)
Brand: Ruixiang Steel
Availability: InStock
Rating: 4.9 (156 reviews)

As a premier welded steel pipe manufacturer, Ruixiang Steel offers precision-engineered piping solutions for infrastructure, energy, and structural applications. Compliant with API 5L, ASTM A53, and EN 10217, our pipes guarantee high-integrity welds and long-term durability.

Core Manufacturing Capabilities

ERW (Electric Resistance Welded)

High-frequency induction welding. Perfect for precision structural tubing, mechanical parts, and low-pressure fluid transport.

OD: 21.3mm – 660mm
Application: Furniture, Greenhouse, Scaffolding

LSAW (Longitudinal Submerged Arc)

Straight-seam welding for heavy-wall pipes. Specifically designed for high-pressure oil/gas pipelines and offshore structures.

OD: 406mm – 1500mm
Application: Deepwater Piling, Gas Transmission

SSAW (Spiral Submerged Arc)

Spiral welding allows for cost-effective manufacturing of ultra-large diameter pipes using narrow steel strips.

OD: 219mm – 3620mm
Application: Water Drainage, Piling Projects

Technical Specifications

Parameter	Details
Execution Standards	API 5L, ASTM A53, BS 1387, EN 10219, DIN 2440, JIS G3444
Material Grades	Q195, Q235B, Q355B (16Mn), ASTM A36, GR.B, S235JR, S355JR
Wall Thickness (WT)	0.6mm – 25.4mm (Customizable up to 60mm for LSAW)
Surface Treatment	Hot-dip Galvanized (Z40-Z275), Black Painting, 3PE/FBE Coating
Length Range	6m, 8m, 12m, or as required by customer actual projects

Welded Pipe FAQ

Q: How do you guarantee weld seam quality?

A: We conduct 100% online Eddy Current Testing for ERW pipes and X-ray/Ultrasonic Testing (UT) for SSAW/LSAW seams, ensuring zero defects and pressure-tight performance.

Q: Do you offer galvanized finishes for corrosion protection?

A: Absolutely. We provide high-quality hot-dip galvanizing with zinc coatings from Z40 up to Z275 g/m² for maximum rust protection in humid or marine environments.

Seamless steel pipe

Seamless steel pipe is a kind of long section steel with hollow section and no joints around. It is a kind of economical steel, which is widely used as the pipeline for transporting fluid, such as oil, natural gas, gas, water and some solid materials.

Oil pipe

High-quality Pipeline Seamless Steel Pipe , meets API 5L standards, suitable for oil and gas industry. This API 5L Pipeline Pipe is made with seamless steel, and meets all API 5L standards for oil and gas industry use. It has high strength and excellent resistance to corrosion, making it ideal for use in harsh environments. Its durability ensures long service life, and the precision manufacturing ensures a high-quality product. Its wide range of dimensions and grades makes it suitable for a variety of applications in the oil and gas industry. This product has been designed to reduce maintenance costs, improve performance, and increase efficiency.

Rectangular pipe

Rectangular tube is a square rectangular tube, also known as a rectangular hollow section (RHS), is a type of hollow tube with a rectangular cross-section. It is made from steel and is characterized by its four equal sides and uniform wall thickness.