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Product introduction
1. Basic Specification
Standard: EN 10219‑1 (Cold‑formed welded structural hollow sections, non‑alloy & fine‑grain steels)
Steel Grade: S235JRH (Material No. 1.0039)
Manufacture: High‑frequency straight‑seam welded (ERW/HFW), cold‑formed
Shape: Round, square, rectangular (common for brackets)
Typical Size: OD 21–610 mm, wall thickness 2–16 mm
2. Chemical Composition (mass %, max)
|
Element
|
C
|
Si
|
Mn
|
P
|
S
|
N
|
|---|---|---|---|---|---|---|
|
Limit
|
0.17
|
0.35
|
1.60
|
0.035
|
0.035
|
0.009
|
Low carbon ensures excellent weldability and cold‑forming performance.
3. Mechanical Properties (room temperature)
|
Property
|
Value
|
|---|---|
|
Yield strength (Rp0.2)
|
≥ 235 MPa
|
|
Tensile strength (Rm)
|
360–510 MPa
|
|
Elongation (A5)
|
≥ 24% (longitudinal)
|
|
Impact energy (KV2)
|
≥ 27 J @ +20°C
|
Good ductility and room‑temperature toughness suit static and moderate dynamic bracket loads.
4. Key Advantages for Brackets
Cost‑effective: Economical structural steel for moderate‑load supports
Weldability: Easy to cut, weld, and fabricate into brackets/frames
Dimensional accuracy: Consistent HFW production for precise assembly
Strength‑to‑weight: Hollow section offers high rigidity with low weight
Versatility: Available in round/square/rectangular to match bracket design
5. Typical Bracket Applications
Building & construction: Wall brackets, pipe supports, equipment mounts, handrail frames
Industrial machinery: Machine bases, conveyor supports, tool racks
Infrastructure: Signpost brackets, solar panel mounts, bridge parapets
General engineering: Light structural supports, shelving, work platforms
6. Fabrication & Use Notes
Welding: Use common carbon steel electrodes/wires; preheating rarely needed
Cutting: Plasma, saw, or laser cutting works well
Surface treatment: Paint, galvanizing, or powder coating for corrosion protection
Design: Follow Eurocode 3 for structural bracket calculations; S235JRH is suitable for static and moderate cyclic loads
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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