600mm Hot Rolled Flat Bar Q195 Q235 Q345 GB704 Mild Steel Products

１．Product Overview

Hot rolled flat bar is widely used in structural fabrication, steel construction, equipment manufacturing, and industrial processing applications requiring stable dimensional performance and good weldability.

Produced from hot rolled steel coil through slitting and leveling processes, the flat bar offers consistent thickness, stable edge quality, and flexible width selection for downstream fabrication.

The product supports multiple international material standards including GB, ASTM, EN, and JIS specifications for export projects and industrial applications.

２．Technical Solution

The flat bar is manufactured using hot rolled steel coil slitting technology, which provides stable dimensional control and efficient production for medium and large-volume applications.

Material grades such as Q195, Q235, Q345, SS400, ASTM A36, and S275JR provide balanced mechanical strength, forming performance, and welding compatibility for construction and machinery use.

Thickness from 1.8mm to 17.75mm and width up to 870mm support flexible processing requirements including cutting, punching, welding, bending, and galvanizing.

３．Specifications

４．Application

Hot rolled flat bar is commonly used in steel structure fabrication, machinery manufacturing, construction reinforcement, transportation equipment, brackets, base frames, agricultural equipment, and general engineering projects.

The product is suitable for cutting, welding, bending, punching, and galvanizing operations in industrial production environments.

５．Processing

The flat bar can be processed through laser cutting, flame cutting, drilling, punching, welding, bending, galvanizing, and painting according to project requirements.

Stable dimensional tolerance and surface consistency improve fabrication efficiency during downstream processing.

６．Advantages

• Wide width range up to 870mm
• Stable thickness tolerance for fabrication accuracy
• Good weldability and forming performance
• Compatible with GB, ASTM, EN, and JIS standards
• Suitable for galvanizing and surface coating
• Available in multiple structural steel grades

７．How to Choose

• Choose Q195 or Q235 for general structural fabrication and light industrial applications.
• Choose Q345 or ASTM A36 when higher structural strength and load-bearing performance are required.
• Confirm thickness, width, surface treatment, and processing method before ordering.

８．FAQ

Q1．What standards are available
The product can be supplied according to GB, ASTM, AISI, EN, and JIS standards.

Q2．What is the available thickness range
Thickness ranges from 1.8mm to 17.75mm.

Q3．What is the maximum width available
Maximum width can reach 870mm.

Q4．Can custom lengths be supplied
Yes. Custom lengths are available according to project requirements.

Q5．What industries commonly use hot rolled flat bar
Construction, machinery manufacturing, fabrication, transportation equipment, and industrial engineering industries widely use this product.