Plain rebar, also known as smooth rebar or mild steel round bar, is a reinforcing steel product with a completely smooth surface. It is primarily used in construction and industrial applications where a strong mechanical bond with concrete is not necessary. Made from low-carbon steel such as Grade A1 or ST37, plain rebar offers excellent ductility, high flexibility, and outstanding weldability, making it a preferred choice for shaping and fabricating in various projects. Available in diameters ranging from 6 mm to 40 mm, it is commonly supplied in straight lengths of 6 meters or 12 meters, with some variations available in coils.

Application & Industries

Plain rebar is widely used in various industries due to its adaptability and mechanical properties. It is particularly utilized in:

Formwork and reinforcement in precast concrete elements
Fencing, grating, and light construction tasks
General metal fabrication and industrial applications
Infrastructure and utility projects
Shipbuilding and machinery manufacturing

Technical Specifications

Product Type	Plain Rebar (Plain Round Bar)
Material	Low-carbon Steel (ST37 or Grade A1)
Rebar Diameter	6 mm to 40 mm
Length	6 meters or 12 meters
Standards	ASTM A36, BS4449, ISIRI 3132
Tensile Strength	300-500 MPa
Yield Strength	240-400 MPa
Packaging	Steel-strapped bundles

Standards & Certifications

Plain rebar can be produced and delivered in compliance with various international and regional standards, tailored to meet specific customer requirements. The most frequently provided standards include:

ASTM A36 (American Standard) – Suitable for structural applications with moderate strength and excellent weldability.
BS 4449 (Grade 250) – A widely recognized British Standard for plain round bars.
ISIRI 3132 (Grade A-I) – The Iranian national standard for plain rebars made from low-carbon steel.
DIN 488 (German Standard) – Used in certain European markets.
GOST 5781 (Russian Standard) – Applied in CIS countries and former Soviet Union markets.

These standards define key mechanical and chemical properties such as yield strength, tensile strength, elongation, chemical composition, and manufacturing tolerances. We supply plain rebar that meets the required standards tailored to the destination market and client specifications.