Custom Steel CHS Round Tubular Column with Circular Base Plate & Welded Gussets for Architectural & Industrial Applications

Target Keywords

CHS steel column, round tubular column, circular base plate column, cylindrical steel column, architectural steel column, CHS column fabrication, round HSS column, tubular steel column gusset, circular hollow section column, S355 steel column, Q355B round column, steel structure round pillar, industrial round column, bolted base plate round column

Brief Description

Smooth cylindrical CHS (circular hollow section) steel column with a precision-cut circular base plate and multiple triangular welded gussets. Offers uniform buckling resistance in all directions - ideal for architectural exposed steel and industrial applications.

Detailed Description

This CHS (circular hollow section) round tubular column is fabricated from hot-rolled seamless or welded CHS steel to EN 10210 / EN 10219 (S355J2H) or equivalent GB/T 8162 (Q355B). Unlike H-beam columns with different buckling resistance about their major and minor axes, a CHS column has identical radius of gyration in all directions - it provides uniform buckling resistance regardless of loading direction, making it the most structurally efficient column section per kilogram of steel. The column is welded to a precision laser-cut circular base plate, with multiple triangular gusset plates arranged radially between the column shaft and base plate. The base plate features pre-drilled bolt holes (6+ visible from standard viewing angle) around the perimeter for anchor bolting. Surface finish is a smooth matte grey primer (SA 2.5 shot blasting + 60-80μm epoxy zinc-rich primer), with hot-dip galvanizing available as an option. CHS columns are increasingly specified for architectural applications - airport terminals, atrium structures, sports facilities, and commercial lobbies - where the smooth, clean cylindrical form is preferred over the industrial appearance of H-sections. For industrial uses, CHS columns offer lower wind drag coefficient (approximately 0.5-0.7 vs 1.2-1.5 for H-sections), reducing lateral wind load on the structure. Every column is dimensionally inspected for diameter, wall thickness, base plate flatness, and overall straightness before release.

Product Attributes

Product Selling Points

Uniform buckling resistance: A CHS column has identical rx = ry (radius of gyration), meaning it resists buckling equally in all directions - no weak axis, no need for intermediate lateral bracing to the minor axis

Architectural finish quality: The smooth cylindrical surface has no sharp edges, no visible bolt heads, no flange tips - the preferred column form for exposed architectural steel where appearance matters

Lower wind drag: CHS columns present approximately half the wind drag coefficient of H-sections (Cd ≈ 0.6 vs 1.3), reducing the total lateral wind load on the building by 10-15% in column-dense structures

Radial gusset symmetry: Gussets are positioned at equal angular intervals for uniform load distribution into the foundation - the weld stress at each gusset is identical, eliminating uneven base plate bending

Hot-rolled seamless or welded CHS: We source from certified mills (EN 10210 for hot-finished seamless; EN 10219 for cold-formed welded) and provide full mill certificates with chemical composition and mechanical properties

No internal corrosion: CHS columns are closed sections - unlike open H-sections with exposed web surfaces, the interior of a CHS column is sealed from the environment, eliminating internal corrosion risk

Company Advantages

20+ years supplying CHS columns for architectural and industrial projects across 30+ countries - we understand the tighter dimensional and surface quality requirements of exposed steel

In-house circular plate cutting: Our CNC plasma rotary cutting system produces precise circular base plates with smooth edges, eliminating the need for secondary grinding

Engineering support: We calculate column buckling resistance per EC3 Part 1-1 (column buckling curves a or a0 for CHS) and design the base plate-gusset system for the full axial + moment load combination

Quick quotation: Provide column height, diameter, wall thickness, and axial load - we return a priced proposal with section check and connection design within 24 hours

Global shipping: CHS columns nest efficiently in containers (smaller diameters can be placed inside larger ones for multi-size orders, reducing freight volume)

Frequently Asked Questions

Q1: What is the advantage of a CHS column over an H-beam column?

A: Three key advantages: (1) Uniform buckling - CHS has the same strength in all directions, H-beams are much weaker about their minor axis. (2) Appearance - CHS is the preferred choice for exposed/architectural steel. (3) Wind - CHS has approximately half the wind drag of H-sections, reducing lateral loads. The trade-off is that CHS connections (beam-to-column) are more complex to detail than bolted connections to H-beam flanges.

Q2: Can you supply CHS columns with a painted finish instead of galvanized?

A: Yes. For architectural projects, we offer: (1) Standard primer + topcoat paint system (epoxy intermediate + polyurethane topcoat) in any RAL color. (2) Intumescent fireproof coating for fire-rated columns (30, 60, 90, or 120 minutes). (3) HDG + duplex paint for combined corrosion and aesthetic requirements. Surface preparation for all finishes is SA 2.5 blast cleaning.

Q3: How do you connect beams to a round CHS column?

A: CHS beam connections are more complex than H-beam connections, but we support all standard methods: (A) Welded fin plates - a vertical plate is shop-welded to the CHS column face, and the beam bolts to it on site. (B) Through-plates - a plate passes through slotted holes in the CHS wall and is welded both sides. (C) Collar/ring assemblies - a bolted steel collar clamps around the column. Our engineers will recommend the optimal method based on your beam loads and architectural requirements.

Q4: What is the maximum diameter CHS column you can fabricate?

A: Our standard capability covers CHS up to 1200mm OD in hot-rolled sections. For larger diameters (up to 2000mm), we fabricate from rolled-and-welded plate - a steel plate is rolled into a cylinder, the longitudinal seam is SAW welded, and the cylinder is welded to the base plate. These are built-up CHS columns and have the same external appearance as seamless but are more economical for large diameters.

Hot Tags: custom steel chs round tubular column with circular base plate & welded gussets for architectural & industrial applications, China custom steel chs round tubular column with circular base plate & welded gussets for architectural & industrial applications manufacturers, suppliers, factory