Product Name	Q235 ASTM A36 S235jr Q345b S355jr SAE1020 SAE1045 Carbon Round Iron Rod/Square Steel Bar
Standard	JIS, AISI, ASTM, DIN, TUV,BV,SUS,etc
Material	Q195, Q215,Q235,Q345,ST37, A36,45# ,16Mn, SPHC,SGCC,CGCC,etc
Diameter	2~500mm
Length	3000~6000mm
Type	Round/Square/Hexagonal/Angle/Flat Bar
Surface Treatment	Polished, Black, Grinding or as demand
Usage	It is widely used in Shipping, Petrochemical industry. Machine industry, Medicine, Electric Power, Energy, Building Decoration, Nuclear Power, Aviation and Spaceflight, Seawater equipment, Chemistry, Coloring Matter, Paper-making, Oxalic Acid, Fertilizer, Coastal areas, Facility, Rope, Screw, Nut etc.
Usage
Payment terms	30%TT for deposit, 70% balance before shipment or LC at sight
Packing	Wooden pallet or according to customer’s request

Different type for flat bar

Low Carbon Flat bar: Contain up to 0.3% carbon. They are highly ductile, making them ideal for applications requiring extensive forming and welding.
Medium Carbon Flat bar: Contain between 0.3% and 0.6% carbon. These plates offer a good balance of strength and ductility, suitable for machinery parts and automotive components.
High Carbon Flat bar: Contain between 0.6% and 1.0% carbon. They are known for their high strength and hardness, often used in cutting tools and high-strength wires.
Ultra-High Carbon Flat bar: Contain between 1.0% and 2.1% carbon. These plates are extremely hard and are used in specialized applications like knives and springs.

Advantage of Flat bar

Corrosion Resistance Treated for excellent corrosion resistance, extending service life and reliability.
High Strength and Durability High tensile strength and durability, suitable for heavy-duty applications.
Good Workability Smooth surface and uniform thickness, easy to cut, weld, and form.
Variety of Specifications Available in various sizes and thicknesses, adaptable to different applications.
Cost-Effective More affordable than other steel types, economical for large projects.
Wide Range of Applications Versatile, used in construction, manufacturing, machinery, shipbuilding, and oil and gas industries.