Circle Square Rectangle Ellipse ERW Welded Steel Pipes with Galvanized Oiled and Black Surface Finish

1．Product Overview

Circle, square, rectangle, and ellipse welded steel pipes are used for construction structures, industrial fabrication, fencing systems, machinery frames, agricultural structures, furniture frames, and general engineering applications.

The product is manufactured by ERW welding technology and can be supplied with galvanized, oiled, or black surface finish. Different pipe profiles support structural, decorative, and fabrication requirements.

2．Technical Solution

The pipe is produced by forming steel strip into the required pipe profile and welding it through ERW processing.

Galvanized surface treatment improves corrosion resistance for outdoor and humid environments. Oiled surface treatment provides temporary anti-rust protection during storage and transportation. Black surface finish is suitable for welding, painting, and further fabrication.

3．Specifications

4．Application

This product is suitable for construction structures, steel supports, handrails, fencing systems, machinery frames, welded assemblies, greenhouse frames, vehicle frames, trailer components, furniture frames, decorative tubing, pipe structures, and fabricated steel components.

Circle pipes are suitable for general pipe structures and engineering use.

Square and rectangle pipes are suitable for structural frameworks, supports, and load-bearing fabrication.

Ellipse pipes are suitable for decorative or visible frame applications.

5．Processing

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

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

6．Advantages

• ERW welding supports stable weld seam and dimensional consistency.
• Circle, square, rectangle, and ellipse profiles are available for different structural and decorative applications.
• Galvanized, oiled, and black surface finishes meet different corrosion protection and processing needs.
• The size range covers light-duty and structural fabrication requirements.
• Standard 5.8M and 6M lengths support common container loading and site installation.
• Nude packing and standard export packing are available for shipment.

7．How to Choose

• Choose galvanized welded pipe for outdoor use and humid environments.
• Choose oiled welded pipe when temporary anti-rust protection is required during storage or shipment.
• Choose black welded pipe when welding, painting, or further fabrication is required.
• Choose square or rectangle pipe for structural frameworks and supports.
• Choose circle pipe for general pipe structures and engineering applications.
• Choose ellipse pipe for decorative or visible frame applications.
• Confirm pipe shape, size, thickness, length, surface treatment, and packing method before production.

8．FAQ

Q1．What pipe shapes are available

Circle, square, rectangle, and ellipse welded steel pipes are available.

Q2．What surface treatments can be supplied

Galvanized, oiled, and black surface finishes are available.

Q3．What standards are available

ASTM A53, BS1387, DIN2244, GB/T13793, GB/T3091, GB/T6728, and GB/T6725 are available.

Q4．Can the pipe length be customized

Yes. Standard lengths are 5.8M and 6M, and customized lengths can be supplied.

Q5．What packing methods are available

Nude packing or standard export packing can be supplied.