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S355JR,ASTM A572 Gr.50,SN490B I-Beam for Heavy Machinery And Bridge Construction

An I-beam is a long steel bar with an "I"-shaped cross-section, composed of a vertical web in the center and two parallel horizontal flanges. Its design maximizes bending resistance and is widely used in construction, bridges, and machinery.

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product details

Product Introduction

Production technology

Hot Rolled High-Strength I Beam Q355 S355 Steel for Structural Framing (4)

Standards and Grades

I-beam steel standards

Currently, I-beam steel is a product line that includes various types such as IPE120 , IPE100, IPN 180*, IPN220*, S200*34*, S250*52*, IB 300*150, IB 180*100*, and more, which are widely used. Almost all of these are produced to international standards and are extensively used in industrial and construction sectors.

All raw materials for I-beams are imported from countries such as Taiwan, Russia, China, Japan, the United Kingdom and the United States.

Standards for I-beam steel include: ATSM, DIN, ANSI, EN, GOST 380-88, JIS G3101, SB410, 3010.

Steel grades for I-beam include: S355JO, S275, S275JR, S275JO, S235, S235JR, S235JO, ASTM A36, JIS G3101 SS400, Q345B, A572 Gr50, S355, S355JR.

Russian steel grades for I-beam include: CT3,.. with the standard GOST 380-88.

Japanese steel grades for I-beam include: SS400,.. with the standard SB410, 3010.

Chinese steel grades for I-beam include: SS400, Q345B,… with the standard JIS G3101, SB410, 3010.

US steel grades for I-beam include: A36,.. with the standard ATSM A36.

Regional	Standard	Grade	Yield strength
European	EN 10025	S235JR	≥235 MPa
China	GB/T 706	Q235B	≥235 MPa
America	ASTM A36	A36	≥250 MPa

Technical Specifications (Example)

Normal Size

(1)Chinese standard (GB/T 706)

Model: 10# to 63# (such as 16#, 20a#, 32c#, etc.)

(2)European Standard (EN)

Model: IPE series (such as IPE100, IPE300), IPN series (such as IPN140).

(3)American Standard (ASTM)

Model: S75*8.5-S610-180.

(4)Japanese Standard (JIS)

Model: 100*75-600*190.

Key Applications

High Bending Resistance: Large moment of inertia for superior load-bearing capacity.

Lightweight: Hollow structure reduces material usage by 30%-50%.

Standardization: Globally recognized dimensions (e.g., GB/T 706, ASTM A36).

Hot Rolled High-Strength I Beam Q355 S355 Steel for Structural Framing (1)

Comparison with Other Structural Beams

Feature	H Beam	I Beam	C Channel
Shape	H-shaped	I-shaped	C-shaped
Load Capacity	High	Moderate	Low
Weight	Lightweight	Heavier than H beams	Lightweight
Applications	Heavy structures	Medium structures	Light structures

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.

Hot Rolled High-Strength I Beam Q355 S355 Steel for Structural Framing (2)

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Q1: What’s the difference between I-beams and H-beams?

A1:I-beam: Narrow tapered flanges, ideal for horizontal loads (e.g., beams).H-beam: Wide parallel flanges, better torsional resistance, used for columns and multi-directional loads.

Q2: How to choose I-beam materials?

A2:Light-duty (shelves, brackets): Q235B/ASTM A36.

Heavy-load (bridges, machinery): Q355B/ASTM A572.

Corrosive environments: Weather-resistant steel (Q355NH) or galvanized coating.

Q3: What precautions should be taken during I-beam installation?

A3:Clean rust and oil before welding.

Add braces or cables for long spans to prevent tilting.Use high-strength bolts (Grade 8.8 or higher) for bolted connections.

Q4: Can we get the some samples?Any charges?

A4:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.

Q5: How do you make our business long-term and good relationship ?

A5: 1.We keep good quality and competitive price to ensure our customers' benefit.

2.We respect every customer as our friend and we sincerrly do business and make friends

with them, no matter where they come from.