Product Details

Round tube


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Product Introduction

Round Pipe (Black Steel)
Black Steel Round Pipe is an un-galvanized black iron steel pipe with a black oxide layer, featuring good structural strength, workability, and affordability.
It's commonly used in machinery manufacturing, building structures, piping systems, and furniture decoration. Due to the lack of corrosion protection, it usually undergoes secondary processing like painting, powder coating, or galvanizing to enhance its corrosion resistance and lifespan.

➤ Specifications
▪️ Outer Diameter: ⌀12.7mm ～ ⌀323.9mm
▪️ Thickness: 1.0mm ～ 12.0mm
▪️ Length: Standard 6M, can be cut to required length
💡 Click to view the complete Black Iron Round Pipe Specification Table
Inch / Spec Outer Diameter (mm) Available Thickness (mm)
— 12.7 1.2, 1.5
3/8" 17.3 2.0, 2.3
1/2" 21.2 1.2, 1.5, 1.8
— 25.4 1.8
3/8" 26.6 1.5, 1.8, 2.8
3/4" 27.2 1.5, 1.8, 2.8
1" 33.8 1.5, 1.8, 2.0, 2.5
1-1/4" 42.7 2.0, 2.3
1-1/2" 48.5 1.5, 1.8, 2.0, 2.5
2" 59.9 1.5, 1.8, 2.0
2-1/2" 76.3 1.8, 2.0, 2.3, 2.8, 3.0
3" 88.3 1.8, 2.0, 2.8, 3.0, 4.0
3-1/2" 101.6 2.0, 2.8
4" 114.3 2.0, 2.8, 3.2, 4.5, 6.0
5" 139.6 3.2, 4.5, 6.0
6" 165.2 2.8, 4.5, 6.0
8" 216.3 6.0, 8.0
10" 267.4 6.0
12" 323.9 6.0, 9.0
➤ Product Features
▪️ Stable Structure, High Load Capacity: Circular design ensures uniform stress distribution, suitable for support and structural use.
▪️ Excellent Workability: Can be welded, bent, cut, perforated, and undergo various processing.
▪️ Competitive Price: More cost-effective than galvanized round pipes, suitable for large-scale project procurement.
▪️ Allows for Secondary Corrosion Protection: Can be treated with anti-rust coating, painting, or hot-dip galvanizing as needed.

➤ Applications
▪️ Building Structures: Steel frames, frameworks, bridge support structures
▪️ Machinery Manufacturing: Industrial equipment stands, drive shafts, machine parts
▪️ Piping Systems: Ventilation, water pipes, cooling lines (requires further corrosion protection)
▪️ Furniture Design: Display racks, table and chair frames, industrial-style decoration
▪️ Agricultural Structures: Greenhouse frames, handrails, supports

📞 Contact Us
If you have any needs for Black Iron Round Pipe, feel free to contact Guokai Steel!
📧 Email: sales@guokaisteel.com.tw
📩 Official Line Account: @guokai
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