Structural Hollow Section For Buildings

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Structural Hollow Section For Buildings
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We manufacture square (SHS), rectangular (RHS) and circular (CHS) hollow sections for building projects, from single-storey warehouses to multi-storey frames, stadium roofs and facade structures. One factory supplies the columns, the roof members and the secondary framing, so the grades, finishes and marking match across the whole job.
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Hollow Section
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Description

Tianjin Brisk Metalwork Co., Ltd. is one of the leading manufacturers and suppliers of structural hollow section for buildings in China. We have world-leading production equipment and strong manufacturing capabilities. Please feel free to buy bulk durable structural hollow section for buildings from our factory.

 

Our Product

Tianjin Brisk Steel focus on produce and supply hollow section and steel pipe

EN 10219 S355J2H SQUARE HOLLOW SECTION
EN 10210 S420MH HOLLOW SECTIONS
S275 J0H HOLLOW SECTION
S355 Seamless Hollow Section

Heavy Duty Structural Hollow Section for Repeated Loads, Impact and Heavy Service

 

Building system Section we supply Typical grade Finish options
Columns SHS, CHS S355J2H, S355NH Black, primed, galvanized
Roof trusses and long-span roofs CHS, SHS, RHS S355J0H, S355J2H, S420MH Primed, painted, galvanized
Bracing and tie members CHS S355J2H Black, primed, galvanized
Facade mullions, transoms and curtain wall frames RHS, SHS S275J2H, S355J2H Painted, galvanized
Exposed atrium, canopy and entrance structures CHS, SHS S355J2H Blasted and painted
Purlins, stair stringers, handrails and secondary frames RHS, SHS, thin-wall CHS S235JRH, S275J0H Black, galvanized, painted
Concrete-filled columns Large CHS, SHS S355J2H Black, primed outside

 

What Do Building Designers Gain from Hollow Section?

 

A closed section that resists twisting and buckling. Hollow sections carry compression and torsion efficiently, which suits columns, bracing and roof members.

 

Less surface to coat. A hollow section has less surface area per tonne than an open section, so paint, galvanizing and fire protection use less material.

 

Clean lines with no ledges. Smooth faces collect less dust and water, and look tidy where steel is left exposed.

 

Compact members in tight architectural zones. Slim columns and chords keep floor area and sight lines free.

 

We supply both cold-formed (EN 10219) and hot-finished (EN 10210) sections for buildings, and we recommend the route that matches your loads and temperatures when you send the drawing.

 

Rounded Corners and Sharp Corners: Choose the Edge You Need

 

Paint and intumescent fire coating thin out on sharp edges, so the corners are where coating failures usually start.

 

  • Cold-formed sections have rounded outer corners from production, which holds a more even coating film on the edge. This suits painted and intumescent-coated columns.
  • Sharp-corner sections are available for glazing, cladding and architectural frames where a square edge is part of the design. We discuss the coating system with you at enquiry so the edge is planned, not an afterthought.

 

Finishes Ready for Your Building's Environment

 

  • Black for interior dry steel that will be painted or coated on site
  • Blasted and primed with a primer compatible with your topcoat or intumescent system (send us the paint data sheet)
  • Painted to your colour and film thickness, for exposed members
  • Hot-dip galvanized for exterior, coastal and humid buildings, with vent and drain holes planned for each section
  • End caps on request, to keep the inside clean during storage

 

Concrete-Filled Hollow Section Columns for Taller Buildings

 

Concrete-filled columns carry higher loads in a smaller footprint and help with fire resistance. For these columns we supply:

 

  • CHS and SHS sized to your design code's diameter-to-wall limit. We check the wall you specify and tell you early if it is outside the limit.
  • Clean bore. Ends are capped and the inside is kept free of loose scale and oil.
  • Square, flat saw-cut ends for base plates, end plates and splices
  • Wall and OD checked per piece, so the steel area you design with is the steel area you receive

 

How We Supply Hollow Section to Building Projects

 

 

  • Cut-to-length to your member schedule, with square, burr-free ends
  • Marking per member with grade, size and heat number, so site crews match steel to drawing
  • Drilling, end plates and welded fittings can be arranged for repeat members
  • Mixed sizes and grades from one factory on one order
  • Documents: EN 10204 3.1 certificate as standard, 3.2 with SGS, BV or TUV witness on request, and CE marking where your market requires it

 

Case: Gym Columns With Even Coating on Every Edge

 

A steel contractor in Southeast Asia needed 96 pcs of 200x100x6 mm RHS columns, 6 m long (about 17 t), primed and topcoated for a school gymnasium. On the previous supply, which had sharp edges, the coating inspector found the edge film below the specified thickness on 31 of 96 columns (32%), and the contractor lost days on touch-up before handover.

 

We supplied cold-formed RHS with rounded outer corners, blasted and primed in our workshop with the primer the topcoat supplier had approved. At inspection, 3 of 96 columns (3%) needed edge touch-up, and the contractor met the handover date.

 

FAQ

Q: Can you supply sections for concrete-filled columns?

A: Yes. Tell us the section, wall and design code, and we check the wall against the diameter-to-wall limit before we quote. We cap the ends and keep the bore clean.

Q: Do you supply CE-marked sections for EU building projects?

A: Yes, EN 10219 and EN 10210 sections can be supplied with CE marking and the documents your market requires. Tell us the destination at enquiry.

Q: Can sections be primed for intumescent fire coating?

A: Yes, with a primer compatible with your intumescent system. Send us the coating supplier's data sheet so we select the right primer.

Q: Which grade do you suggest for a seismic building?

A: It depends on your design code and its ductility requirements. Send us the code and the member list, and we confirm the grade and route that match, including yield and tensile values per lot.

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MACHINE EQUIPMENT
500X500 Hollow section production lines
200X200 HOLLOW SECTION PRODUCTION LINES
UNCOILING PROCESS

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