Hot Rolled Steel Hexagon Bar for Machining Parts

Shunchen offers Hot Rolled Steel Hexagon Bar For Machining Parts with customizable specifications for global industrial supply chains. The hexagonal cross-section provides flat clamping surfaces for efficient machining, while hot rolling ensures consistent structure for different manufacturing processes. Available in multiple sizes, steel grades and surface finishes, the bars support wholesale orders, engineering projects and component production with technical documents, inspection records and customized processing services.

Key Features

1. Hexagonal Structure for Efficient Machining

The six-sided cross-section provides natural wrench contact surfaces, allowing easier fixing and positioning during machining. Compared with round bars that require additional milling for flat surfaces, the hexagonal shape can reduce secondary machining requirements for specific components.

This design is suitable for parts requiring rotational resistance, including mechanical connectors, fastener components and tooling accessories.

2. Carbon Steel Grades for Different Load Requirements

Q235B and Q355B carbon structural steel options are available for different mechanical strength requirements.

Q235B is commonly selected for general structural and light-duty machining applications, while Q355B provides higher strength for components exposed to greater loads.

3. Flexible Secondary Processing Capability

Hot Rolled Steel Hexagon Bar For Machining Parts supports additional processing based on customer drawings and production requirements.

Available machining services include:

· Cutting into specified lengths

· Drilling holes

· Thread processing

· Bending operations

· Forging preparation

Technical Parameters

Manufacturing Process & Quality Control

The production process includes steel heating, multi-pass hot rolling forming, straightening and inspection procedures.

Each batch is checked through:

· Surface visual inspection

· Dimensional measurement

· Tensile testing

· Hardness testing

The manufacturing process follows applicable GB and international standard requirements. Products can be supplied with mill test certificates, dimensional inspection reports and mechanical performance documents for overseas purchasing requirements.

Third-party inspection services from SGS and BV are available when required.

Applications

Hot Rolled Steel Hexagon Bar For Machining Parts is used across multiple industrial fields where hexagonal steel sections provide machining advantages.

Machinery Manufacturing

Used for equipment components, connection parts, shafts and mechanical accessories requiring stable machining positioning.

Automotive Components

Suitable as raw material for automotive parts, brackets and precision-machined metal components.

Construction Equipment

Applied in structural connectors, heavy-duty machinery components and engineering projects.

Fastener Production

Used for producing bolts, nuts and customized fastening parts requiring hexagonal stock material.

Customization Options

Shunchen provides customized solutions based on your drawings and project specifications.

Available customization includes:

Size Adjustment

Special across-flat dimensions and customized lengths can be arranged according to production requirements.

Surface Treatment Selection

You can choose suitable surface protection methods:

· Anti-rust oil for indoor storage and machining

· Black mill paint for general protection

· Hot-dip galvanizing for outdoor corrosion resistance

· Epoxy coating for special environments

Machining Support

Cutting, drilling, threading, bending and forging services are available for bulk orders.

Why Choose Shunchen as Your Steel Supplier

Standard-Based Production

Products like Hot Rolled Steel Hexagon Bar For Machining Parts are manufactured according to GB, ISO, EN, ASTM and DIN standard systems to support international procurement requirements.

Stable Production Capacity

Tianjin Shunchen Hongye has developed from a steel trading company established in 2014 into an industrial group with over 300 employees and annual production capacity exceeding 450,000 tons.

Export Documentation Support

For international orders, Shunchen can provide mill test certificates, inspection documents and required technical files to support customs clearance and project verification.

Direct Factory Supply

Direct communication with the production team helps you confirm specifications, processing requirements and delivery arrangements before ordering.

FAQ

Q1: How does the machinability of this hot-rolled hex bar perform during CNC turning and thread rolling?

A: Manufactured from Q235B and Q355B structural steel, our Hot Rolled Steel Hexagon Bar For Machining Parts features a uniform grain structure. This reduces tool wear, prevents carbide insert chipping, and allows continuous chip removal during high-speed CNC turning, drilling, and thread rolling.

Q2: What are the exact straightness tolerances for automated bar feeder systems?

A: To prevent jamming in Swiss-type automatic lathes or bar feeders, all bars undergo precision multi-roll straightening. We maintain an axial straightness tolerance within ≤1.5mm per meter and control across-flat tolerances within ±0.04mm.

Q3: Can Q235B and Q355B hexagon bars be directly drop-forged or heat-treated?

A: Yes. Both Q235B and Q355B grades offer excellent forgeability and heat-treatment response. They can be processed directly via induction heating, hot drop-forging, or tempering. Shot blasting and acid pickling are also available to remove surface mill scale before processing.

Q4: How do I choose the right surface treatment for different operating environments?

A: For indoor CNC machining, anti-rust oil or black paint is sufficient. For outdoor or humid environments, hot-dip galvanizing (zinc coating≥80g/m²) is recommended for long-term corrosion resistance. Epoxy coatings are available for specialized chemical environments.

Q5: How are the steel bars packaged to prevent bending and rusting during ocean freight?

A: Bars are bound into rigid hexagonal bundles using heavy-duty steel strapping and plastic corner protectors. For long-distance sea transit, bundles are coated with VCI anti-rust oil and wrapped in multi-layer waterproof plastic film with desiccants.

Q6: What quality inspection documents and certificates can Shunchen provide for export orders?

A: Every shipment comes with an official Mill Test Certificate (MTC EN 10204 3.1) tied to the specific heat number. We provide chemical analysis, tensile strength, yield strength, and hardness test reports. Third-party inspections via SGS or BV are supported upon request.

Q7: What secondary processing options are available before shipment?

A: Shunchen offers in-house secondary machining based on customer drawings. Available services include saw cutting to custom fixed lengths, chamfering, drilling, thread processing, and pre-forging preparation, saving external processing costs for overseas buyers.