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square tube
Square steel tube from Junnan Steel
Hollow structural section square tube. ASTM A500. For frames, racks, and railings.
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Square steel tube Product Range at a Glance
Browse the full product list below.
Standard Square Tube
ASTM A500 Gr.B/C. For structural and architectural use.
1.Grade: Q195~Q345
2.Size: SHS 16x16~250x250; RHS 10x20~120x80
1.Size: SHS 16x16~250x250; RHS 10x20~120x80
2.Size: SHS 16x16~250x250; RHS 10x20~120x80
1.Grade: Q195~Q345
2.Size: SHS 16x16~250x250; RHS 10x20~120x80
mild steel square hollow sections
2.Size: SHS 16x16~250x250;
Square steel tube Specifications
QC includes chemical analysis, hydrostatic testing, dimensional checks, and surface inspection.
- Standards: ASTM A500 Gr.B/C, EN 10219, GB/T 6728
- Size: 20x20-300x300 mm.
- Wall: 1.5-12 mm.
- Length: 6 m or custom.
- Surface: Black, painted, or galvanized.
Square steel tube Applications
Our square steel tube serves industries worldwide.
Steel Frames
Building frames, mezzanine supports.
Racking
Pallet rack uprights, shelving frames.
Architectural
Railings, balustrades, gates, furniture.
Why Junnan Steel
10+ Years Export
Founded 2015, exported to 118+ countries.
Factory-Direct
Mill pricing, no middlemen.
Third-Party Inspection
SGS, BV, CIQ accepted.
Flexible Shipping
15-25 days. FOB, CIF, CFR.
Global Support
Multi-language. 24h response.
FAQ
Steel Frames?
Yes, building frames, mezzanine supports.
Racking?
Yes, pallet rack uprights, shelving frames.
Architectural?
Yes, railings, balustrades, gates, furniture.
We will get you a fast free quote and schedule your job on the day and time that works best for you.
