40X 40cr 45# 42CrMo 4140 Hot Rolled Forged Factory Price Carbon Steel Rods Round Bar

Oct 22, 2025

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Specification

 

item

 

value

 

Steel Grade

 

Q195 Q235 10# 20# 35# 45#

 

Standard

 

GB

 

Place of Origin

 

China

 

 

 

Shandong

 

Brand Name

 

HJ Steel

 

Model Number

 

6-400mm

 

Technique

 

Hot Rolled

 

Application

 

Structural Steel Bar

 

Alloy Or Not

 

Non-Alloy

 

Special Use

 

Mold Steel

 

Type

 

Carbon Steel Bar

 

Tolerance

 

±1%

 

Processing Service

 

Bending, Welding, Decoiling, Cutting, Punching

 

Grade

 

Q195 Q235 10# 20# 35# 45#

 

Delivery Time

 

8-14 days

 

Product Name

 

Mild Steel Round Bar

 

Keyword

 

bar

 

Standard

 

GB

 

Technology

 

Hot Rolled Cold Draw Forge

 

Grade

 

Q235/Q345/SS400/Q420/30CrMo 40CrMo 20SiMn 12Cr1MoVG 15CrMoG 42CrMo

 

Diameter

 

6-400mm

 

Length

 

1-12m/customized

 

Surface Treatment

 

Hot Rolled Black Mill Surface

 

Usage

 

Machining of mechanical parts

 

Package

 

Standard Seaworthy Packging

 

info-630-469info-516-464

 

1.What is a round bar?

Round bar is a long cylindrical metal bar, which has many industrial and commercial applications. The most common application is the shaft. The standard diameter is from 1/4 "to 24". There may be other sizes.

 

2.What is the difference between a round bar and a rod?

Round bars often possess higher tensile strength and hardness, making them suitable for load-bearing applications. Meanwhile, rods offer increased flexibility and are more malleable, catering to intricate designs and bending requirements.

 

3.How strong is a round bar?

Compressive Strength

Round Bars: Round bars handle compressive loads very well because their shape helps distribute stress evenly. This makes them especially good for applications where the pressure is centred, as it helps them resist bending or deforming under heavy loads.

 

4.What is another name for a round bar?

The most common shapes are round bar (also called rod), rectangular bar (including square bar, the special case of equal sides), and hexagonal bar (usually called hex bar for short). Tube and pipe are similar, but have hollow centers and are traditionally not called "bar" in industrial usage.

 

5.What does a round bar look like?

Round Bar is a cylindrical metal bar with a circular cross-section. It is one of the most common and versatile forms of metal stock, used in various applications across different industries.