Carbon steel round bars are versatile steel products used for construction, structural fabrication and general engineering applications. MAFCO Steel offers carbon steel round bars in a range of ASTM, DIN and EN grades to meet different project and material requirements.
Available Carbon Steel Round Bar Grades
MAFCO Steel offers carbon steel round bars in the following grades:
• ASTM A36
• ASTM A572 Grade 50
• ASTM A615 Grade 40
• ASTM A615 Grade 60
• DIN 17100 ST.52-3
• EN 10025 S275 JR
• EN 10025 S355 JR
These grades provide suitable material options for various construction, fabrication and engineering requirements.
ASTM Carbon Steel Round Bars
MAFCO Steel supplies carbon steel round bars in several ASTM grades, including ASTM A36, ASTM A572 Grade 50, ASTM A615 Grade 40 and ASTM A615 Grade 60.
ASTM A36 Round Bars
ASTM A36 is a widely specified carbon steel grade used for a variety of structural and engineering requirements. MAFCO Steel includes ASTM A36 in its carbon steel round bar range.
ASTM A572 Grade 50 Round Bars
ASTM A572 Grade 50 is included in the MAFCO Steel carbon steel round bar range and provides an option for projects requiring this specified material grade.
ASTM A615 Grade 40 and Grade 60 Round Bars
MAFCO Steel also offers carbon steel round bars in ASTM A615 Grade 40 and ASTM A615 Grade 60 for projects requiring these material specifications.
DIN and EN Carbon Steel Round Bars
For projects using DIN and European EN standards, MAFCO Steel offers:
• DIN 17100 ST.52-3
• EN 10025 S275 JR
• EN 10025 S355 JR
These options allow customers to select carbon steel round bars according to their project specifications and required material standards.
Applications of Carbon Steel Round Bars
Carbon steel round bars are used across construction, structural fabrication and general engineering applications. They can be selected for projects where round steel sections are required according to the specified material grade and standard.
Key application areas include:
• Construction projects
• Structural fabrication
• General engineering
• Industrial fabrication
• Heavy engineering applications
Carbon Steel Round Bars for Industrial Projects
Reliable material selection is important for construction and industrial projects. MAFCO Steel provides a range of carbon steel round bars covering multiple ASTM, DIN and EN grades.
MAFCO Steel supports sectors including construction companies, petrochemical industries, oil fields and heavy engineering industries.
Choosing the Right Carbon Steel Round Bars
When selecting carbon steel round bars, the material standard and grade should match the requirements of the project specification.
Important considerations include:
• Required material standard
• Required steel grade
• Intended application
• Project specifications
• Required quantity and dimensions
MAFCO Steel sources and processes certified materials that meet international standards for structural, industrial and fabrication applications.
Why Choose MAFCO Steel?
Certified Steel Materials
MAFCO Steel sources and processes certified materials for structural, industrial and fabrication applications.
Multiple Material Standards
Our carbon steel round bar range includes ASTM, DIN and EN grades, providing customers with multiple material specification options.
Wide Product Range
MAFCO Steel supplies steel materials and precision-engineered solutions for construction, infrastructure and industrial applications.
Project-Focused Support
Our team can discuss your project requirements and help identify the appropriate product and material specification.
Need Carbon Steel Round Bars?
Contact MAFCO Steel with your required grade, quantity and project requirements. Our team can help you identify the appropriate carbon steel round bar specification for your application.
Request a Quote from MAFCO Steel today.

