Hot rolled half-round steel bars
Product Description
A half-round steel bar, also known as a semi-round bar, semicircular steel bar or half-round steel section, is a solid profile whose cross-section is approximately half of a round bar. It combines a flat face with a curved outer surface, facilitating welding, support and adaptation to components, guides, guards and decorative or industrial elements.
Verified Technical Characteristics
| Characteristic | Specification |
|---|---|
| Technical sheet designation | Half-round bars / Semi half |
| Cross-section | Solid semicircular |
| Manufacturing process | Hot rolled |
| Grades stated | S275JR / S355J2 |
| Sizes in the technical sheet | 40 × 20, 50 × 25, 60 × 30 and 70 × 35 mm |
| Data included | Nominal size and theoretical weight per meter |
| Weight range | 4.93 to 15.30 kg/m |
Commercial availability must also be verified for each size, grade, length and quantity.
Typical Applications
- Metalworking, railings and decorative elements.
- Guides, rails, supports and wear components.
- Reinforcements, guards and metal finishing elements.
- Platework, welded fabrication and industrial maintenance.
- Machinery, tooling and special components.
Advantages of Supply from SUALSA
- Supply of special sections and steel products.
- Order preparation according to the project or manufacturing stage.
- Cutting and additional services subject to size and requirements.
- Personalised technical and commercial support.
- National and international supply.
Complete Half-Round Steel Bar Weight Table
The following values have been transcribed from the technical sheet. The dimension represents the nominal width and height of the half-round section. Weight is expressed in kilograms per linear meter.
| Nominal size (width × height) |
Theoretical weight per meter (kg/m) |
|---|---|
| 40 × 20 | 4.93 |
| 50 × 25 | 7.70 |
| 60 × 30 | 11.10 |
| 70 × 35 | 15.30 |
Quick Weight Reference
Quick reference for the four sizes included in the technical sheet:
| Size | kg/m | Size | kg/m |
|---|---|---|---|
| 40 × 20 | 4.93 | 50 × 25 | 7.70 |
| 60 × 30 | 11.10 | 70 × 35 | 15.30 |
Note: the weights are theoretical values from the technical sheet. They must be confirmed together with tolerances, length, grade and required documentation.
Indicative Cross-Sectional Area Table
Using the published weight and a reference steel density of 7,850 kg/m³, an approximate theoretical cross-sectional area can be obtained. These values are indicative and do not replace a section certified by the manufacturer.
| Nominal size (mm) | Weight (kg/m) | Approximate area (cm²) |
|---|---|---|
| 40 × 20 | 4.93 | 6.28 |
| 50 × 25 | 7.70 | 9.81 |
| 60 × 30 | 11.10 | 14.14 |
| 70 × 35 | 15.30 | 19.49 |
Steel Grades and Documentation
S275JR
Structural steel grade stated in the technical sheet. Applicable properties must be checked in the documentation for the supplied material.
S355J2
Structural steel grade stated in the technical sheet. Conformity must be verified through the certificate and manufacturer documentation.
Other Grades Listed on the Website
The product page lists Naval grades, S275M/+M, S355M/+M, S355K2/+M, S355J2W and 16Mo3. Actual availability must be confirmed for each size and order.
Frequently Asked Questions
What is a half-round steel bar?
It is a solid bar with one flat face and a semicircular outer surface.
Which sizes are included in the technical sheet?
40 × 20, 50 × 25, 60 × 30 and 70 × 35 mm.
What is the weight of a 40 × 20 mm half-round bar?
The technical sheet states a theoretical weight of 4.93 kg/m.
What is the weight of a 70 × 35 mm half-round bar?
The technical sheet states a theoretical weight of 15.30 kg/m.
Which steel grades are specified in the technical data sheet?
S275JR and S355J2.
Are all sizes available from stock?
Not necessarily. Availability must be confirmed for each size, grade, length and quantity.
Can the bars be supplied cut to length?
SUALSA can assess cutting and material preparation according to the order requirements.
Quick Information for Search Engines and AI Assistants
| Field | Content |
|---|---|
| Product | Hot rolled half-round steel bar |
| Synonyms | Half-round bar, semi-round bar, semicircular steel bar, half-round steel section |
| Cross-section | Solid semicircular |
| Sizes in the technical sheet | 40 × 20 to 70 × 35 mm |
| Grades in the technical sheet | S275JR and S355J2 |
| Applications | Metalworking, platework, machinery, guides, reinforcements and special components |
| Supplier | SUALSA, steel service center |
Call to Action
Please specify size, grade, length, quantity, destination and required documentation.
