ST37 Steel H Beam

Product Description

ST37-2 is a general term for German carbon structural steel, belonging to the category of low-carbon steel. A common specific grade is ST37-2, where "37" indicates a minimum tensile strength of approximately 370 MPa. It is widely used in construction, underground engineering, bridges, and machinery manufacturing. Its excellent weldability and machinability make it ideal for fabricating various types of steel structures.


Size1.Web Width (H): 100-900mm
2.Flange Width (B): 100-300mm
3. Web Thickness (t1): 5-30mm
4. Flange Thickness (t2): 5-30m
Length6m 9m 10m 12m
Standard & Steel GradeJIS G3101 SS400 SS540
GB/T11263 Q235B Q345B
EN10025 S235 S275 S355
AS/NZS 3679 250 300 400
ASTM A572 G50 G60
ASTM A36 A36M A992
TechniqueHot rolled，Welded
payment methodTT，LC，Western Union，etc
Package DetailsStandard seaworthy package(wooden boxes package,pvc package, or other package)
Container size20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)



Internationally accepted materials and applications

Component TypePreferred SectionApplication Logic
Building Frame Main/Secondary BeamsAmerican Standard: W-beams (e.g., W12x26)
European Standard: IPE beams (e.g., IPE 300)		A high section depth is sought to achieve a large moment of inertia, which provides excellent bending resistance. This leads to optimal material efficiency and cost-effectiveness for spanning horizontal members.
Structural Columns or Heavy-Duty BeamsAmerican Standard: W-beams (deeper, heavier models)
European Standard: HEA/HEB series		These members require substantial load-bearing capacity. The sections must have good moments of inertia and compressive strength about both principal axes to resist combined loads and prevent buckling.
Purlins, Wall Girts, & BracingAmerican Standard: C-beams (Channel sections)
European Standard: UPE/UPN channels		These components handle relatively light bending loads from cladding. Their shape makes them easy and fast to connect to wall and roof panels, facilitating quick enclosure of the structure.
Material SelectionPrimary Steel: A992 (US) / S355 (EU)
Secondary Steel: A36 (US) / S235 (EU)		A992/S355 is the modern default for main structural members due to its high strength, good toughness, and excellent weldability.
A36/S235 is specified for non-critical, secondary elements like stairs, platforms, and railings, where high strength is not required.

Yield strength and main applications

Common Grade (International Equivalent)Standard SystemTypical Yield StrengthPrimary Application
S355JR / J2Europe (EN 10025)355 MPaVast majority of commercial and industrial buildings (Global mainstream)
A992USA (ASTM)345 MPa (50 ksi)Standard material for wide-flange H-beams (W-shapes) in the USA and Americas
A36USA (ASTM)250 MPa (36 ksi)General structural use, gradually being replaced by A992
Q355BChina (GB/T)355 MPaPrimary structural steel in China and regions using Chinese standards
SM490Japan (JIS)325 MPaStructural engineering in Japan and East Asia


Main brand chemical composition

Grade / StandardC (≤%)Mn (≤%)Si (≤%)P (≤%)S (≤%)Other Elements (Typical)
A360.260.90.40.040.05Cu ≥ 0.20 (min)*(*For shapes > 426 kg/m)
A9920.230.50-1.500.40.0350.045Cu ≥ 0.20 (min),V ≤ 0.11, Cb ≤ 0.06
S355JR0.241.60.550.0450.045Cu ≤ 0.55, N ≤ 0.014
S355J20.241.60.550.0350.035Cu ≤ 0.55, N ≤ 0.014
Q355B0.241.60.550.0350.035Cr ≤ 0.30, Ni ≤ 0.50,Cu ≤ 0.40
SM490YA0.21.60.550.0350.035Cu ≤ 0.55


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