Hot Rolled H Beam Frame: HW350×350, HN400×200, HM340×250

Hot rolled H beams are the standard structural members for steel frames, columns and beams. Below is a real frame drawing with three H-section types, all Q355 material, produced to GB/T 11263-2017

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Frame Overview

Item	Value
Frame size	7,600 × 8,882 mm
Column spacing	1,500 mm (×4 bays)
Material	Q355
Standard	GB/T 11263-2017
Total members	11 pcs
Total steel weight	~8,628 kg (8.6 t)

 

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Three H-Section Types

Member	Section	Type	Qty	Length	Unit Wt	Total Wt
GKZ35-1 (corner column )	HW350×350	Wide flange	4 pcs	8,882 mm	115 kg/m	4,086 kg
GL34-1 (interior column )	HM340×250	Medium flange	5 pcs	8,882 mm	79.7 kg/m	3,539 kg
GL40-1 (frame beam )	HN400×200	Narrow flange	2 pcs	7,600 mm	66 kg/m	1,003 kg

 

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Section Advantages

HW (Wide Flange) — Column Grade HW

 HW350×350 has nearly equal depth and flange width, giving strong axial and bending capacity in both axes. Used for corner columns where load is highest.

HN (Narrow Flange) — Beam Grade HN

HN400×200 has deep web and narrow flange, efficient for bending about the strong axis. Ideal for beams spanning between columns.

HM (Medium Flange) — Mid Column Grade HM

HM340×250 balances axial load and bending. Used as interior columns where load is lower than corner columns but higher than beam-only members.

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Beam-Column Connection

From the detail drawing, the joint uses:

· End plate: 10 mm thick welded to column flange

· Bolts: M20, pitch 22 mm

· Weld: 8 mm fillet weld

· Joint type: rigid moment connection

Bolted field connection speeds up erection compared to fully welded joints.

 

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Typical Applications 

1. Multi-story steel structures — HW columns + HN beams form the standard moment-resisting frame for 3–10 story buildings.

2. Industrial plant buildings — Q355 H beams carry crane loads and roof loads in single-story factories.

3. Warehouse & logistics centers — long-span HN beams reduce interior columns, maximizing storage layout.

4. Steel structure residential buildings — factory-fabricated H sections enable fast, lightweight residential construction.

5. Bridge approach & trestles — HN/HM sections work as stringers and bracing in pedestrian and small vehicle bridges.

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Why Hot Rolled H Beam

· Standardized sections — mill-produced to GB/T 11263, no custom welding needed

· Higher strength than welded — continuous hot-rolling gives better material properties

· Cost efficient — standard sizes are readily available and cheaper than built-up sections

· Q355 grade — higher yield strength than Q235, lighter sections for same load Q355

 

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HW350×350 columns, HN400×200 beams, HM340×250 interior posts — 11 standard hot rolled H beam members, Q355, GB/T 11263-2017, ready for bolted steel frame erection​