Products Description
Steel I Beam, also referred to as I-Beam, H-Beam, Universal Beam (UB), and Universal Column (UC), is a hot-rolled structural steel profile designed for superior load-bearing performance and long-span stability in industrial, commercial, and civil engineering projects. Our factory manufactures carbon steel and low-alloy structural I-beams according to ASTM A36, ASTM A572 Grade 50, EN10025 S235/S275/S355, and JIS G3192, ensuring accurate dimensions, high tensile strength, and excellent weldability. We supply a complete size range from lightweight beams to heavy-duty wide-flange sections, including black hot-rolled I-beam, galvanized I-beam, and custom-cut structural steel beams for steel buildings, bridges, shipbuilding, machinery frames, and offshore engineering. With MTC EN10204 3.1, strict quality control, and export-grade packaging, our I-beams are trusted by global contractors, fabricators, and distributors for long-term structural integrity and reliable performance.
Chemical Composition (Typical Grades)
| Grade | C (max) | Mn | Si | P (max) | S (max) |
|---|---|---|---|---|---|
| ASTM A36 | 0.25 | 0.80–1.20 | 0.40 | 0.04 | 0.05 |
| ASTM A572 Gr50 | 0.23 | 1.35 | 0.40 | 0.04 | 0.05 |
| S235JR | 0.17 | 1.40 | 0.40 | 0.035 | 0.035 |
| S355JR | 0.20 | 1.60 | 0.50 | 0.035 | 0.035 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| ASTM A36 | 250 | 400–550 | 23 |
| A572 Gr50 | 345 | 450–620 | 18 |
| S235JR | 235 | 360–510 | 26 |
| S355JR | 355 | 470–630 | 22 |
International Standard Size Table (Metric + Imperial)
| Size (Metric) | Height H (mm) | Flange B (mm) | Web Thickness (mm) | Flange Thickness (mm) | Weight (kg/m) | Imperial Size | Thickness Classes | Dimensional Tolerance |
|---|---|---|---|---|---|---|---|---|
| 100×100 | 100 | 100 | 5 | 7 | 17.2 | 4" × 4" | Standard / Heavy | ±1–2 mm |
| 125×125 | 125 | 125 | 6 | 9 | 23.8 | 5" × 5" | Standard / Heavy | ±1–2 mm |
| 150×75 | 150 | 75 | 5 | 7 | 14 | 6" × 3" | Light / Standard | ±1–2 mm |
| 150×150 | 150 | 150 | 6 | 9 | 31.1 | 6" × 6" | Standard / Heavy | ±1–2 mm |
| 200×100 | 200 | 100 | 5.5 | 8 | 21.1 | 8" × 4" | Light / Standard | ±1–2 mm |
| 200×200 | 200 | 200 | 6.5 | 10 | 49.9 | 8" × 8" | Standard / Heavy | ±1–2 mm |
| 250×125 | 250 | 125 | 6 | 9 | 25.7 | 10" × 5" | Standard / Heavy | ±1–2 mm |
| 300×150 | 300 | 150 | 6.5 | 9.5 | 37.7 | 12" × 6" | Standard / Heavy | ±1–2 mm |
| 350×175 | 350 | 175 | 7 | 11 | 53 | 14" × 7" | Standard / Heavy | ±1–3 mm |
| 400×200 | 400 | 200 | 8 | 13 | 66 | 16" × 8" | Standard / Heavy | ±1–3 mm |
| 450×200 | 450 | 200 | 9 | 14 | 74 | 18" × 8" | Standard / Heavy | ±1–3 mm |
| 500×200 | 500 | 200 | 10 | 16 | 92 | 20" × 8" | Heavy Duty | ±2–3 mm |
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Product Name
I Steel Beam
Shape
I Beam
Technique
Hot Rolled/Welded
Grade
Q235/Q345/S355/S235/SS400/ASTM36/Q235Bm,A-36,AS300B,S355J0,S450J0-T, S275JR
Flange Thickness
7-40mm
Flange Width
100-500mm
Web Width
100-800mm
Web Thickness
5-30mm
Tolerance
±3%
Surface Treatment
Hot Dip Galvanised/Painting or Black
Application
Mechanical&manufacture,Steel Structure,Shipbuilding,Bridging,Automobile
ChassisDelivery Term
EXW FOB CIF CFR
Payment Term
TT 30% Advance and 70% Balance
For pricing, technical data, or customized sizes, contact us anytime.
We provide global export, OEM packaging, and fast delivery for structural steel projects.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: What standards do your I-beams follow?
A: ASTM A36, ASTM A572, JIS G3192, EN10025 S235/S275/S355.
Q2: Can you provide custom cutting lengths?
A: Yes, from 1 meter to 12–24 meters depending on standard.
Q3: Do you offer hot-dip galvanized I-beams?
A: Yes, HDG, electro-galvanized, and painted types are available.
Q4: What is the minimum order quantity?
A: 1 ton for inventory items, 10–25 tons for custom rolling.
Q5: Do you supply mill test certificates?
A: Yes, MTC EN10204 3.1 is provided for all shipments.
Q6: What surface treatments are available?
A: Black hot rolled, galvanized, sandblasted, painted, anti-rust oil.
Q7: What length tolerance can you guarantee?
A: Standard: ±50 mm; Precision cutting: ±2–5 mm.
Q8: Can I request third-party inspection?
A: Yes, SGS / TUV / BV inspection is available.
Q9: Are beams welded or hot-rolled?
A: We supply hot-rolled, welded H-beam, and custom profiles.
Q10: Do you offer container loading reinforcement?
A: Yes, steel wire + wooden block + strip reinforcement for safe export.
Inspection & Quality Assurance
Full dimensional inspection (height, flange, thickness, straightness)
Chemical analysis and mechanical testing
Ultrasonic testing (UT) for internal integrity
Surface inspection for cracks, rust, and lamination
Tolerance control according to ASTM/JIS/EN
Third-party verification available (SGS/TUV/BV)
Complete MTC provided for every lot
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