SPHC SPCC Rectangle and Ellipse ERW Welded Steel Pipes with Oiled Black and Galvanized Surface

1．Product Overview

SPHC and SPCC rectangle and ellipse welded steel pipes are used for furniture frames, structural fabrication, machinery supports, steel frameworks, decorative tubing, greenhouse structures, transportation components, and industrial applications.

Rectangle pipes are suitable for structural frames and support systems, while ellipse pipes are often used for visible structures, decorative frames, and furniture components. Oiled, black, and galvanized surface finishes can be selected according to storage, processing, and application environment.

2．Technical Solution

The pipes are produced by ERW welding technology. Steel strip is formed into rectangle or ellipse profile and welded continuously to achieve stable weld seam quality and dimensional consistency.

SPHC and SPCC grades provide good forming and welding performance for bending, punching, cutting, and fabrication. Galvanized surface treatment improves corrosion resistance for outdoor or humid environments. Oiled surface treatment provides temporary rust protection during transportation and storage. Black steel pipes are suitable for welding, machining, painting, and secondary processing.

3．Specifications

4．Application

This product is suitable for furniture manufacturing, construction supports, steel frameworks, machinery frames, welded assemblies, greenhouse frames, agricultural supports, trailer structures, vehicle framework, decorative tubing, and general fabricated steel structures.

Rectangle welded pipes are commonly used for structural fabrication, frames, supports, and assemblies requiring flat connection surfaces.

Ellipse welded pipes are commonly used for furniture, decorative structures, visible frameworks, and special-shaped pipe applications.

5．Processing

The welded steel pipes support cutting, bending, punching, welding, drilling, polishing, galvanizing, painting, bundling, and general fabrication.

Customized pipe length, surface finish, and packing method can be supplied according to customer requirements.

6．Advantages

• ERW welded structure provides stable weld seam quality and dimensional consistency.
• Oiled, black, and galvanized finishes support different storage, processing, and application needs.
• SPHC and SPCC grades are suitable for forming, welding, bending, and fabrication operations.
• Rectangle and ellipse profiles support both structural and decorative applications.
• The size range covers light-duty and structural fabrication requirements.
• Standard export packing is suitable for international shipment and container loading.

7．How to Choose

• Choose galvanized welded pipe for outdoor applications and humid environments.
• Choose black welded pipe for indoor fabrication, welding, painting, and machining.
• Choose oiled welded pipe when temporary anti-rust protection is required during storage or shipment.
• Choose rectangle welded pipe for structural frames, machinery supports, and fabricated assemblies.
• Choose ellipse welded pipe for furniture frames, decorative tubing, and visible framework applications.
• Choose SPHC or SPCC steel grade when forming, bending, and welding performance is required.

8．FAQ

Q1．What pipe shapes are available

Rectangle and ellipse welded steel pipes are available.

Q2．What surface finishes can be supplied

Oiled, black, and galvanized surface finishes are available.

Q3．What steel grades are available

Q195, Q215, Q235, SPHC, SPCC, 08Yu, and 08Al are available.

Q4．Can customized pipe length be supplied

Yes. 5.8M, 6M, and customized pipe lengths can be supplied according to customer requirements.

Q5．What applications are suitable for ellipse pipes

Ellipse pipes are commonly used for furniture, decorative structures, visible frameworks, and special-shaped fabricated components.