The Steel Plate Pre-Treatment Line is a high-end continuous shot blasting and surface treatment system designed for the preparation of steel plates before coating. It focuses on the core requirements of rust removal, oxide scale removal, surface strengthening, roughness control, and coating preparation, providing continuous and efficient processing for steel plates in different specifications.

Designed for demanding manufacturing environments, the production line combines high processing efficiency with consistent surface treatment quality. Its performance is comparable with international first-line equipment and provides an alternative solution for manufacturers looking to achieve reliable plate pre-treatment without compromising productivity or surface quality.

Efficient Continuous Processing for Higher Productivity

The steel plate pre-treatment line is designed for continuous operation. Steel plates are transported through the production line by roller tables, allowing multiple processing stages to be completed in sequence without frequent manual handling.

The conveying speed ranges from 1.5 to 5.0 m/min, with stepless speed regulation available to accommodate different plate thicknesses and processing requirements.

For thin steel plates with a thickness of 3–12 mm, the processing speed can reach ≥3.0 m/min. For thicker plates from 12–50 mm, the processing speed can reach ≥1.5 m/min.

This flexible speed control helps manufacturers balance processing quality and production output according to the material being treated.

Uniform Surface Treatment and Reliable Cleaning Quality

Surface consistency is one of the key requirements of steel plate pre-treatment. The system is designed to provide uniform shot blasting across the steel plate surface while minimizing missed blasting areas, plate deformation, and variations in surface roughness.

The equipment can achieve a rust removal grade of ≥ GB8923-88 Sa2.5, corresponding to ISO 8501-1:2007 Sa2.5. After treatment, the residual amount of scale and rust on the steel surface is controlled to ≤3%, with no visible oil or dirt.

This level of surface preparation provides a consistent foundation for subsequent coating operations and supports the strict surface quality requirements of high-end manufacturing.

Integrated Shot Blasting, Painting and Drying

The production line integrates several surface treatment stages into one continuous process.

First, steel plates enter the line through the roller conveyor system and are transported into the shot blasting chamber. High-speed shot blasting removes rust, oxide scale, and other contaminants from the steel surface.

After shot blasting, accumulated abrasive and floating dust are removed through the cleaning and blowing process. The treated steel plate then enters the painting chamber, where the required coating is applied.

The plate subsequently passes through the drying chamber. Here, the paint film is dried to a tack-free or hard-dry state before the finished steel plate is discharged through the output roller tables.

By integrating these stages into a continuous production line, the system reduces manual intervention and helps maintain consistent processing conditions throughout the workflow.

Stable Coating Quality

In addition to surface cleaning, the line is designed to provide controlled coating performance.

For shop primer and epoxy zinc-rich primer, the dry film thickness uniformity is controlled within 20–35 μm, with a thickness difference on the same plate of ≤5 μm.

The coating adhesion can reach ≥5 MPa, tested by the cross-cut method in accordance with GB/T 9286-1998.

Consistent coating thickness and adhesion help provide a reliable protective layer for steel plates after pre-treatment.

Designed for Different Steel Plate Sizes

The equipment can accommodate a broad range of steel plate dimensions.

The standard steel plate adaptation range includes:

• Width: 1.2–3.2 m

• Optional customized width: up to 4.0 m

• Length: 6–18 m

• Processing: Supports segmented continuous processing of extra-long steel plates

The adjustable processing parameters allow the production line to be configured according to different plate specifications and production requirements.

For manufacturers with non-standard requirements, the equipment can also be customized in terms of processing width, conveying speed, system configuration, and processing procedures.

High Wear Resistance and Long Service Life

Shot blasting equipment operates under demanding conditions, making wear resistance an important consideration for long-term operation.

The production line uses high-quality materials and wear-resistant components to improve equipment durability. High-chromium wear-resistant parts are applied to key areas exposed to abrasive media.

The expected service life of core components includes:

• Shot blaster impellers: ≥2,000 hours

• Coating system nozzles: ≥1,500 hours

The equipment is also designed for stable operation, with a monthly average unplanned downtime rate of ≤0.5%, corresponding to approximately ≤3.6 hours of monthly downtime.

This helps manufacturers reduce unexpected interruptions and maintain more consistent production schedules.

Automation and Intelligent Operation

The steel plate pre-treatment line is designed for automated operation, helping reduce manual intervention during the production process.

The system can support:

• Fully automatic operation

• Linked control of different processing stages

• Unmanned operation

• Production data monitoring

• One-button operation

• Automatic coordination between conveying and treatment processes

Automation helps operators manage the complete pre-treatment workflow more efficiently while improving process consistency.

Cleaner and Safer Working Conditions

Environmental control is another important part of the equipment design.

The production line incorporates effective sealing and dust removal systems to reduce dust emissions during shot blasting and surface treatment. Low-dust and low-noise operation helps improve the working environment around the production line.

The system is designed with:

• Excellent equipment sealing

• High-efficiency dust removal

• Low-dust operation

• Low-noise operation

• Cleaner processing conditions

These features support manufacturers seeking more controlled and cleaner steel plate treatment environments.

Flexible Customization for Different Production Requirements

Not every steel processing plant has the same plate dimensions, production capacity, or process requirements. The system therefore supports non-standard customization and modular configuration.

Customization options can include:

• Processing width

• Conveying speed

• Production line configuration

• Process requirements

• Equipment modules

• Steel plate handling requirements

This modular approach allows the pre-treatment line to be adapted to different manufacturing environments and production layouts.

Professional Service from Consultation to After-Sales Support

A complete steel plate pre-treatment project requires more than equipment delivery. Professional support is provided throughout the project lifecycle.

1. Pre-Sales Consultation

Needs Assessment → Solution Demonstration → Cost Calculation

The project begins with an evaluation of production requirements, followed by solution planning and cost calculation.

2. Contract Signing

Solution Optimization → Terms Confirmation → Clarification of Rights and Responsibilities

Technical and commercial details are confirmed before production begins.

3. Delivery Coordination

Production Synchronization → Logistics Planning → Site Preparation

Production and logistics are coordinated with the customer's site preparation schedule.

4. Installation and Commissioning

Professional Construction → Parameter Optimization → Operation Training

After installation, system parameters are optimized, and operators receive training for daily operation.

5. Acceptance and Delivery

Performance Testing → Document Transfer → Acceptance Confirmation

The equipment undergoes performance testing before final acceptance and handover.

6. After-Sales Guarantee

Quality Assurance Service → Regular Follow-Up Visits → Fault Response

Ongoing service is available to support stable equipment operation and respond to potential faults.

7. Value-Added Maintenance

Upgrades and Renovations → Skills Training → Dedicated Support

Maintenance services can also include equipment upgrades, renovation, technical training, and dedicated support.

A Complete Solution for Steel Plate Pre-Treatment

The steel plate pre-treatment line combines continuous shot blasting, surface cleaning, painting, drying, automated conveying, dust removal, and intelligent control into an integrated production system.

With processing speeds of 1.5–5.0 m/min, support for steel plates up to 3.2 m in standard width, optional customization up to 4.0 m, and a rust removal grade of Sa2.5, the system is designed to meet demanding requirements for steel plate surface preparation.

From equipment configuration and customization to installation, commissioning, training, and after-sales support, the complete service process is designed to provide manufacturers with a reliable and efficient solution for large-scale steel plate pre-treatment.