H/U/I Beam
- Hot rolled standard I-section beams cover a full range of sizes from 10# to 63#, available in grades A36, S235JR, SS400 and Q355B to match different regional engineering requirements. Featuring excellent vertical bending resistance, the I-beams deliver reliable structural performance while keeping costs competitive. They support convenient welding, cutting and further machining for on-site fabrication. Widely applied as secondary beams in factories, crane girders, truck chassis frames and small pedestrian bridges. Rigorous production inspection guarantees stable dimensional accuracy and surface quality, making them a preferred structural choice for construction, transportation and machinery engineering projects worldwide.
Certified
All I beams are delivered with EN 10204 3.1 mill test certificates covering chemical, tensile, bending and hardness test. Comply with international steel standards. Accept SGS/BV third-party inspection, full heat number traceability for bulk engineering orders.
Application
I beam is classic symmetrical I structural beam widely used in construction, transportation and machinery manufacturing. In building fields, it serves as factory floor secondary beams, roof purlins and low-rise main girders. Low carbon grades fit medium & small span steel workshops; Q355B I beam is adopted for heavy-duty overhead crane girders. Mechanical industry uses I beam for large machine tool frames, its symmetrical cross-section evenly distributes vertical loads to avoid local deformation. Transportation sector applies anti-rust treated I beam for semi-trailer auxiliary girders and small ship deck supports. It is also used for mine tunnel supports and power plant auxiliary beams, with custom cutting and galvanizing available.
Specification
1. Product Specification
Parameter | Detailed Specification |
Product Type | Hot Rolled Standard Carbon I Beam |
Size Range | 10# – 63# standard series |
Flange Thickness | 4.5mm–17mm, customizable |
Length | 6m,9m,12m, customized cutting available |
Manufacturing Process | Hot Rolled, Straightened, Saw Cut |
Applicable Standards | ASTM A36, EN 10025, JIS G3192, GB/T 706 |
Material Grades | A36, S235JR, SS400, Q355B |
2. Chemical Composition
Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
A36 | ≤0.29 | 0.15-0.40 | 0.80-1.20 | ≤0.040 | ≤0.050 | ≤0.15 | ≤0.20 | - |
S235JR | ≤0.17 | ≤0.35 | ≤1.40 | ≤0.045 | ≤0.045 | ≤0.30 | ≤0.30 | - |
SS400 | ≤0.21 | ≤0.35 | ≤1.50 | ≤0.045 | ≤0.045 | ≤0.20 | ≤0.20 | - |
Q355B | ≤0.24 | ≤0.55 | 1.00-1.60 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.30 | ≤0.10 |
Standard
Classification | Grade | Chemical Composition (wt%) | Mechanical Properties (Room Temperature) |
General Structural Carbon Steel | A36 | C ≤0.29 Mn 0.80~1.20 Si 0.15~0.40 S ≤0.050 P ≤0.040 | TS ≥485MPa YS≥250MPa EL ≥22% HB ≤187 |
S235JR | C ≤0.17 Mn ≤1.40 Si ≤0.35 S ≤0.045 P ≤0.045 | TS 360~510MPa YS ≥235MPa EL ≥26% HB ≤150 | |
SS400 | C ≤0.21 Mn ≤1.50 Si ≤0.35 S ≤0.045 P ≤0.045 | TS 400~510MPa YS ≥245MPa EL ≥21% HB ≤160 | |
High Strength Structural Steel | Q355B | C ≤0.24 Mn 1.00~1.60 Si ≤0.55 S ≤0.035 P ≤0.035 Mo ≤0.10 | TS 470~630MPa YS ≥355MPa EL ≥21% HB ≤180 |
Process
Packing
