ASTM A36 Hot Rolled H Beam Steel | Structural Steel Beam for Construction
Product Introduction
H-shaped steel is an economical section-efficient profile with optimized section area distribution and reasonable strength-to-weight ratio. It is named after its cross-sectional shape resembling the letter "H". Compared with ordinary I-shaped steel, it has significant advantages such as wide flanges, high lateral stiffness, strong bending resistance, and parallel flange surfaces. This significantly simplifies the welding, riveting assembly, and installation processes.。
Production Process
Specifications of H-beam steel
•High-strength: Manufactured with high-quality steel, it boasts outstanding load-bearing capacity and can meet the requirements of heavy construction structures.
•Economy: The cross-sectional design is scientific, with high material utilization rate, effectively reducing the overall project cost.
•Easy to process: Facilitates cutting, welding and assembly, shortens the construction period and improves the construction efficiency.
•Durability: Possesses excellent corrosion resistance. The surface can be treated for corrosion prevention as needed to extend the service life.
•Stability: High lateral stiffness, strong structural stability, suitable for large-span and high-load building scenarios
For example, a common H-beam steel size might be denoted as “H-beam 200x200x8x12,” where:
Height (H) = 200 mm
Flange Width (B) = 200 mm
Web Thickness (t1) = 8 mm
Flange Thickness (t2) = 12 mm
This indicates that the H-beam has a height and flange width of 200 mm, a web thickness of 8 mm, and a flange thickness of 12 mm.
Standards and Grades
H-beam steel standards
Our H-beam steel product line now covers a full range of commonly used models including H100, H125, H150, H200, H250, H300, H350 and H400, all of which enjoy widespread application across industries. Manufactured in strict adherence to international quality and dimensional standards, these H-beam steel products are extensively adopted in both industrial manufacturing and building construction sectors for various structural applications.
H-beam steel is imported from countries such as Taiwan, Russia, China, Japan, the UK, and the US.
Standards for H-beam steel include: ATSM, DIN, ANSI, EN, GOST 380-88, JIS G3101, SB410, 3010.
Steel grades for H-beam include: S355JO, S275, S275JR, S275JO, S235, S235JR, S235JO, ASTM A36, JIS G3101 SS400, Q345B, A572 Gr50, S355, S355JR.
Russian steel grades for H-beam include: CT3,.. with the standard GOST 380-88.
Japanese steel grades for H-beam include: SS400,.. with the standard SB410, 3010.
Chinese steel grades for H-beam include: SS400, Q345B,… with the standard JIS G3101, SB410, 3010.
US steel grades for H-beam include: A36,.. with the standard ATSM A36.
Summary Table: Common Applications by Grade
|
Model (Height × Width) |
Flange thickness (mm) |
Web thickness (mm) |
Theoretical weight (kg/m) |
Applicable scene |
|
H100×100 |
6.0 |
8.0 |
16.9 |
Lightweight steel structure, support frame |
|
H200×200 |
8.0 |
12.0 |
45.2 |
Medium-sized factory buildings, platforms |
|
H300×300 |
10.0 |
15.0 |
83.5 |
Heavy industrial buildings, bridges |
|
H400×400 |
13.0 |
21.0 |
140.8 |
Large venues, high-rise buildings |
|
H500×200 |
10.0 |
16.0 |
79.5 |
Large-span structures, supports |
|
H600×300 |
12.0 |
20.0 |
124.0 |
Bridge, heavy equipment foundation |
Normal Size
For specific standards, H-beam steel includes the parameters:
H: height of the steel column
B: width of the steel flange
t1: thickness of the steel web
t2: thickness of the steel flange
L: length of the steel column
W: steel weight, calculated in Kg/m

H-beam steel dimensions
As indicated by the collected data, the standard length range of H-beam steel generally falls between 6 meters and 15 meters. In practical applications, the most commonly supplied lengths are 6 meters and 12 meters, with the 12-meter specification being the most favored and widely used option in the market.
For H-beam steel with non-standard dimensions or special specifications that deviate from regular industry norms, buyers typically conduct separate negotiations with manufacturers to customize production. When such special-spec H-beam steel cannot be manufactured domestically, importing the required products becomes a viable and common solution.
Applications of Steel H Beams
Building Construction
Steel frames for high-rise buildings
Industrial warehouse structures
Infrastructure Projects
Bridge girders and supports
Highway overpasses
Industrial Uses
Heavy equipment bases
Crane runway beams
Energy Sector
Power plant structures
|
Parameter |
Details / Range |
|
Production Standard |
GB/T 11263 (Chinese Standard), JIS G3101 (Japanese), ASTM A36/A992 (American), EN 10025 (European) |
|
Material / Grade |
Q235B, Q345B (GB); SS400 (JIS); S235JR, S355JR (EN); A36 (ASTM) |
|
Type Classification |
HW (Wide Flange - for columns), HM (Medium Flange), HN (Narrow Flange - for beams) |
|
Size Range (H × B) |
100mm × 100mm to 900mm × 300mm (Custom sizes available upon request) |
|
Flange Width (B) |
50mm – 300mm |
|
Web Thickness (t₁) |
5mm – 28mm (varies by size) |
|
Flange Thickness (t₂) |
7mm – 34mm (varies by size) |
|
Length |
6m, 9m, 12m (Standard); Custom lengths up to 18m available |
|
Yield Strength |
≥ 235 MPa (for Q235B) / ≥ 345 MPa (for Q345B) |
|
Tensile Strength |
375 – 500 MPa (for Q235B) / 470 – 630 MPa (for Q345B) |
|
Surface Treatment |
Black (as rolled), Painted (red oxide or anti-rust primer), Galvanized (upon request) |
Packaging and Shipping
Standard export packing. The modes of transportation include containerized sea freight, bulk sea freight, air freight, land transportation, and multi-modal transportation.

fAQ
1. What is an H-beam?
An H-beam (or I-beam) is a structural steel component with an "H"-shaped cross-section, designed to provide superior load-bearing capacity in construction and engineering projects.
2. What are the common grades of H-beams?
Popular grades include:
ASTM A36 (General construction, moderate strength)
ASTM A572 Gr.50 (High-strength for bridges & heavy structures)
Q235B / Q355B (Chinese standards for buildings & infrastructure)
S235JR / S355JR (European standards for industrial use)
JIS SS400 / SM490 (Japanese standards for heavy-duty projects)
3. What are the key applications of H-beams?
High-rise buildings (Steel frames, columns, and beams)
Bridges & highways (Long-span support structures)
Industrial warehouses & factories (Heavy-load roofing and flooring)
Shipbuilding & offshore platforms (High-strength structural support)
Railway & infrastructure (Tunnel supports, crane beams)
4. What’s the difference between H-beam and I-beam?
H-beam: Wider flanges, more load-bearing capacity, used in heavy construction.
5. How do I choose the right H-beam size?
Key factors:
Load requirements (Heavier loads need larger beams like 400x400mm)
Span length (Longer spans require higher moment of inertia)
Building codes (Check local standards like ASTM, EN, or GB)
6. Can H-beams be welded or drilled?
Yes, H-beams can absolutely be both welded and drilled. In fact, these are standard and essential processes for fabricating steel structures. The ability to weld and drill them is what allows these raw steel sections to be turned into buildings, bridges, and other frameworks.









