Circular Steel Pipe Column CHS Tube Column Welded Flange Bracket Heavy Steel Structure Support

Circular Steel Pipe Column CHS Tube Column Welded Flange Bracket Heavy Steel Structure Column

This circular steel pipe column is a heavy steel structure vertical member fabricated from thick wall circular hollow section tube, welded with corbels, connection plates and flange plates to carry the loads transferred from upper steel beams. It is supplied as a factory prefabricated column with end plates and splice details ready for bolted site assembly, and is used as the primary load bearing column in workshops, high rise steel frames, pipe racks, steel bridges and heavy equipment support structures.

Because the column is built rather than rolled, diameter, wall thickness, corbel position and connection geometry all follow the project drawing instead of a fixed catalogue. The tube body can be supplied as CHS tube column in carbon steel, with the weld details, drilling pattern and surface protection completed before shipment.

Structure and Build Up

• Main body: thick wall circular hollow section steel tube, straight seam or seamless as specified
• Corbels and brackets welded to the tube for beam seating and shear transfer
• Connection plates, gusset plates and stiffener rings welded at beam and bracing interfaces
• Flange plates or end plates at column base and splice locations
• Anchor bolt template and base plate matching for foundation interface
• Lifting lugs and erection marking provided when requested by the erection plan

Material Options

• China standard: Q355B to GB/T 1591 for general structural service
• American standard: ASTM A500 Grade C for cold formed welded and seamless carbon steel tube
• European standard: EN 10219 S355J2H for cold formed welded hollow sections
• Australian and New Zealand standard: AS/NZS 1163 C350L0 for circular hollow sections, with AS/NZS 3678 Grade 350 plate used for welded flange, base and connection plates
• Impact tested tube grades available where low temperature toughness is specified

Corrosion Protection Options

• Shot blasting to the surface preparation grade required by the coating specification
• Shop primer for temporary protection during transport and storage
• Multi coat paint system with intermediate and top coat in the specified colour
• Hot dip galvanizing for outdoor, coastal and high humidity service
• Duplex system combining galvanizing with a top coat for extended service life
• Interior surface protection of the closed tube ends when required

Fabrication and Inspection

• CNC cutting of tube, plate and connection components to drawing dimensions
• Welding of corbels, brackets, flange plates and splice plates under qualified weld procedures
• Weld inspection by visual check, ultrasonic or magnetic particle testing as specified
• Machined drilling of bolt holes to the connection pattern, with hole position checked before packing
• Straightness, ovality and total length verified against tolerance before surface treatment
• Mill test certificate per heat number, weld inspection report and dimensional report issued with the shipment

Site Assembly

• Factory prefabricated column delivered with shop welded corbels and connection details in place
• Bolted splice between column segments for site connection without field welding
• Base plate and anchor bolt interface matched to the foundation drawing
• Match marking and member numbering aligned with the erection sequence
• Packing layout prepared so that columns, beams and bracing arrive in erection order

Typical Applications

• Vertical load bearing columns in industrial workshops and heavy plant buildings
• High rise and multi storey steel frame columns
• Pipe racks and utility corridors in refinery and process plants
• Steel bridge piers and heavy supporting members
• Large equipment frames, skids and support towers
• Long span structures where circular columns reduce wind load and give a clean elevation

Buyer Questions

Why use a circular tube column instead of an H section column?
A circular tube column distributes load evenly in every direction, gives a lower wind drag coefficient and a cleaner architectural line. It is often preferred for exposed columns, high rise frames and structures with multi direction beam connections.

Which standard should be stated for the tube itself?
The hollow section is covered by AS/NZS 1163 C350L0, ASTM A500 Grade C or EN 10219 S355J2H. AS/NZS 3678 applies to the steel plate used for welded flanges, base plates and connection plates, not to the tube body.

Can corbels and connection plates be welded in the factory?
Yes. Corbels, brackets, gusset plates, stiffener rings and end plates are welded under qualified procedures, with weld inspection carried out before surface treatment, so site work is limited to bolted connections.

How is the column protected against corrosion?
Shot blasting followed by shop primer, a multi coat paint system, or hot dip galvanizing, depending on the service environment. A duplex galvanized and painted system is available for coastal projects.

Request a Column Schedule

Send the structural drawing, column schedule or connection details and we will reply with the tube specification, corbel and plate arrangement, inspection plan and delivery schedule for your circular steel pipe column package.

Related products: Structural Steel Fabrications, Industrial Steel Buildings, Multi Storey Steel Building, Commercial Steel Buildings, Pre Engineered Building, Steel Framing Systems.