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.
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