British Hot Rolled H Beam primarily comply with BS 5950 (structural design) and EN 10025 (technical delivery conditions). Although the UK has adopted European standards, "British Standard" is still used to describe H-sections common in the UK market. Common grades like S275JR and S355JR are defined in EN 10025.
British Standard H-Beams
Dimensions:
Expressed as "depth × width × weight per meter", e.g., 203×203×52 (units: mm and kg/m). Main types:
UC (Universal Column): For columns, more square (e.g., 152×152×23).
UB (Universal Beam): For beams, height > width (e.g., 457×191×67).
Typical depth range: 152mm – 356mm.
Material:
S275JR: Yield strength 275MPa, for general buildings.
S355JR/J0/J2: Yield strength 355MPa, higher strength, for bridges and heavy structures.
Complies with EN 10025-2; MTC 3.1 or 3.2 available.
Applications:
Widely used in the UK and Commonwealth countries for:
Building frameworks (beams, columns)
Bridges and elevated structures
Offshore platforms and port facilities
Supports for heavy equipment
American Standard H-Beams
Standard:
American H-beams follow ASTM A6/A6M (general requirements for rolled structural steel) and AISC 360 (specification for structural steel buildings). Common material standards include ASTM A36 (carbon structural steel) and ASTM A992 (high-strength low-alloy steel for structural shapes).
Dimensions:
Expressed as "depth (inches) × weight per foot (pounds)", e.g., W12×50 (approx. 305×74 kg/m). Main series:
W-shape (Wide Flange): Modern H-beam, parallel flange surfaces, high section efficiency.
S-shape (American Standard I-Beam): Traditional I-beam, flanges with slope.
Typical depth: 4 inches (~102mm) to 44 inches (~1118mm).
Material:
ASTM A36: Yield strength 36 ksi (~250 MPa), general carbon steel for common structures.
ASTM A992: Yield strength 50 ksi (~345 MPa), designed for building frames, with better weldability and toughness.
Meets ASTM standards, widely used in high-rises and bridges.
Applications:
Commonly used in North America and countries using US standards:
Frameworks for high-rise and commercial buildings
Bridges and overpasses
Industrial plants and warehouses
Support structures for petrochemical plants
Steel-framed houses and modular buildings
FAQ
Q: Do you need British or American standard?
A: Specify UC/UB or W/S shapes; the systems are not interchangeable.
Q: What is the exact size or designation?
A: For British: e.g., "203×203×52"; for American: e.g., "W12×50".
Q: What material and standard?
A: Common grades: S275JR, S355J2 (BS/EN); ASTM A36, A992 (US).
Q: What length is required?
A: Cut-to-length (e.g., 12m), multiple lengths, or random lengths?
Q: What surface treatment?
A: Sandblasting (Sa2.5), primer, galvanizing, or bare?
Q: Is a mill test certificate required?
A: MTC 3.1 is standard; MTC 3.2 or third-party inspection may be needed for critical projects.
Q: What is the minimum order quantity (MOQ)?
A: Traders: 5–10 tons; mills: 20+ tons.
Q: What is the lead time?
A: Stock items: 1–2 weeks; custom sizes: 4–8 weeks.
Q: What packaging method?
A: Usually bundled and naked; moisture protection for sea freight; pallets or crates?
Q: Are machining services needed?
A: Such as cutting, drilling, welding, or painting?
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