Q345B H-Beam

Q345B H-Beam is a hot-rolled structural steel section widely recognized for its excellent mechanical properties, cost-effectiveness, and versatility. Its distinctive "H" cross-section makes it a fundamental component in modern construction and heavy engineering projects worldwide.

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Detailed Description

Q345B H-beam is a hot-rolled structural steel section widely recognized for its excellent mechanical properties, cost-effectiveness, and versatility. Its distinctive "H" cross-section makes it a fundamental component in modern construction and heavy engineering projects worldwide.

Product Name	H-Beam Metal Steel Profile Hot Dip Galvanized Zinc Coating 30-275g M2Gzb-40c
Standard	AISI, ASTM, DIN, JIS, GB,JIS, SUS, EN, etc.
Material	Q345B
Surface	black painted, anti rust varnished, PE coated, anti rust oiled, galvaniZed, checkered, color coated
Commonly Used Size（H×B, mm）	HW 100×100,HW 150×150,HM 200×150,HM 300×200,HN 400×200,HN 500×200,or as per your request
H	100~900mm, according to customer's requirement
B	100~400mm,or as per your request
t1	5~40mm,or as per your request
t2	6~45mm,or as per your request
Technical Methods	Hot Rolled/Cold Rolling
Packaging	According to customer required
Application	Applied in multiple fields such as architecture, bridges, machinery, energy, etc. etc.
Packing	Standard Seaworthy Packing (Plastic film in the first layer,second layer is Kraft paper. Third layer is galvanized sheet)
MOQ	1 Ton, more quantity price will be lower

Common Applications

Q345B H-beams are the backbone of numerous industrial and commercial structures:

Building Framing: Columns and beams in commercial buildings, industrial plants, and high-rise structures.

Bridge Construction: Used in the support girders and foundational elements of both highway and railway bridges.

Heavy Equipment & Machinery: As a key material in the framework for cranes, excavators, and large lifting equipment.

Support Structures: Widely used for pillars, trestles, and underground support in tunneling and mining.

Marine and Port Facilities: For constructing quays, wharves, and offshore platforms.

6. Available Sizes and Specifications

H-Beams are categorized based on their flange width and web height:

Wide Flange (HW): Flanges are essentially as wide as the section is deep. Ideal for columns.

Medium Flange (HM): A balanced profile for both beams and columns.

Narrow Flange (HN): Flanges are narrower than the section depth. Primarily used as beams.

Thin-Wall (HT): For lighter-duty applications.

Sizes are typically designated by their overall height (H) x flange width (B) x web thickness (t1) x flange thickness (t2) in millimeters (e.g., 200x200x8x12).

Standards and Equivalent Grades

Primary Standard: GB/T 11263 (Hot-rolled H and I Sections)

International Equivalents:

ASTM: A572 Grade 50

EN (European): S355JR

JIS (Japanese): SM490A/B

Conclusion

Q345B H-Beam is a premier choice for engineers and architects seeking a reliable, high-strength, and economically viable structural solution. Its superior performance in critical load-bearing applications ensures the safety, durability, and efficiency of some of the world's most important infrastructure projects.