Product Introduction

Large Size Square Hollow Section is designed for project supply. Large square steel tube with a heavy hollow section, strong bending and torsional performance, and customizable processing for large structural columns and beams.

 

Key Features

• Large square hollow section is formed from seamless or submerged-arc welded round pipe for balanced strength.

• Heavy wall and large section provide strong load capacity while reducing total structural weight.

• Flat ends support cutting, beveling, welding, drilling, and accurate large-frame assembly.

• Sandblasting, painting, and hot-dip galvanizing support outdoor and heavy structural use.

 

Technical Specifications

• Material: Q235B/Q235C/Q355B/Q355C/Q355ND

• ASTM A36/A572 Gr50

• EN S235/S355 series

• JIS SS400/SM490

• Russian St and 09G2S grades; stainless steel available

• Dimensions: Large-size stock available; oversized side length and heavy-wall custom specifications can be produced

• Length: Common 6 m, 9 m, and 12 m; cutting, beveling, and punching available

• Surface: Hot-rolled oxide finish; anti-corrosion treatment available

 

Applications

• Heavy steel-structure columns, equipment bases, and platform beam frames Steel gate structures, footbridges, and large curtain-wall load-bearing frames Heavy warehouse racks, gantry supports, and conveyor structures Large sunrooms, factory fences, and heavy outdoor structural frames.

 

Ordering & Quality Documentation

Please provide the required steel grade, outside diameter or section dimensions, wall thickness, length, applicable standard, surface finish or coating, order quantity and delivery destination. If the pipe is intended for a specific system, include the design and inspection requirements.

 

For project procurement, specify any required material test certificate (MTC), inspection report, certificate of origin or other shipment documentation in your inquiry. Document type, availability and applicability must be confirmed for the exact material grade, shipment and order; no blanket certification is implied.

 

Product FAQ

Q: Which dimensions should be included in an inquiry?

A: Include outside dimensions, wall thickness, length, steel grade, required standard and order quantity.

 

Q: Can inspection documents be requested?

A: Specify the required inspection or material documents in the inquiry; availability must be confirmed for the selected product and supply batch.

 

Request a Quote

Send MGTSP the required product specification, quantity and destination for a quotation. Any listed grades, processing options, inspection documents and delivery terms remain subject to order confirmation.