Surface Preparation Equipment · Q69 Roller Conveyor Shot Blasting Line

1. What Is the Q69 Steel Plate & Section Roller Conveyor Shot Blasting Line?

The Q69 steel plate and section roller conveyor pass-through shot blasting line is a continuous surface pretreatment system for steel plates, steel sections, and other long straight components. Workpieces are fed through the sealed blasting chamber on a variable-frequency roller conveyor while high-efficiency blast wheels remove rust, mill scale, welding slag, and contaminants, creating a uniform surface profile for subsequent coating. In shipbuilding and heavy industry, it is the standard automated choice for preparing steel before painting, coating, or further fabrication.

For detailed technical parameters and model information, see the Q69 roller conveyor shot blasting line product page.

2. Working Principle: Continuous Roller Conveyor Shot Blasting

The Q69 line is built around a continuous flow process. A variable-frequency roller conveyor feeds steel plates, sections, and other long straight components through the blast chamber at a controlled speed, while 8 to 12 high-efficiency centrifugal shot blasting wheels arranged at multiple angles project abrasive onto the workpiece surface from all directions.

The impact strips away oxide scale, rust layers, welding slag, and contaminants, and creates a micro-pit profile on the steel surface — the mechanical key for premium coating adhesion. Spent abrasive and dust fall through the grid, are gathered by screw conveyors, lifted by a bucket elevator, and separated in an air separator, so clean abrasive returns to the hopper in a closed loop. A PLC-controlled system with a pulse cartridge dust collector keeps the line stable, clean, and ready for direct connection to cutting and coating lines.

3. Military Shipyard Case Study: Verified Performance in Real Production

Jiangsu Dingtian recently received a special thank-you letter from a military shipyard — proof that high-end surface treatment equipment from China has come of age.

Under the extremely demanding conditions of warship construction, the Q69 line performed outstandingly across all key indicators:

• Soluble salt control on the steel surface: fully compliant with the standard, effectively preventing future coating blistering.
• Stress relief: significantly improves the mechanical properties of steel plates, meeting strict military specifications.
• Rust removal roughness and cleanliness: consistently reaches Sa2.5 or higher, building a solid foundation for premium coating adhesion.

We are not just a direct-source factory — we are the ultimate alternative expert for Wheelabrator-equivalent quality, helping global manufacturers access top-level surface treatment processes at extremely low cost.

Wear Part Compatibility with Wheelabrator, Pangborn and Sintokogio Machines

Wear parts are where suppliers differ most, and where a vague answer costs money later. Blades, control cages, impellers and chamber liners are consumables, and over ten years their cost usually exceeds what you paid for the machine.

We manufacture compatible wear parts for Wheelabrator, Pangborn and Sintokogio machine series to the original dimensions, fitted by drawing or sample. The parts are cast in our own foundry, so the alloy grade, the liner thickness and the lead time are under our control rather than dependent on an outside supplier.

Wheelabrator, Pangborn and Sintokogio are trademarks of their respective owners. Compatibility references describe fit and function only, and do not imply any affiliation with or endorsement by those companies.

5. Applications: Shipbuilding & Heavy Industry

The Q69 steel plate and section roller conveyor pass-through shot blasting line is widely used wherever large steel surfaces must be prepared before coating:

• Shipbuilding: steel plates and sections for military shipyards and commercial shipyards, before primer and anti-corrosion coating.
• Offshore engineering: heavy plates and profiles for offshore platforms and port structures.
• Heavy industry: steel sections and plates for machinery frames, pressure vessels, and boilers.
• Steel structure fabrication: surface preparation for anti-corrosion painting of large fabricated components.

In all these scenarios, the line delivers consistent Sa2.5 or higher cleanliness and controlled roughness, ensuring long-term coating performance and meeting the strictest quality requirements.

6. FAQ

Q1: What workpieces does the Q69 roller conveyor shot blasting line process?

Steel plates, steel sections, and other long straight components. The line is widely used in shipbuilding and heavy industry for surface preparation before coating.

Q2: What surface quality does the Q69 line achieve?

Consistently Sa2.5 or higher cleanliness with controlled roughness, verified in military shipyard production. Soluble salt control on the steel surface also meets standard requirements.

Q3: What project information is available?

The case study describes the line operating in a shipyard production setting. Contact us for available project details and process parameters.

Q4: Can you supply compatible wear parts for Wheelabrator, Pangborn, and Sinto machines?

We manufacture compatible wear parts to original dimensions, fitted by drawing or sample. Compatibility references describe fit and function only and do not imply affiliation or endorsement.

Q5: Is the Q69 line suitable for shipbuilding applications?

Yes. The line has been verified in a military shipyard and is widely used in shipbuilding and heavy industry, including commercial shipyards and offshore engineering.

7. Conclusion

If you are looking for an economical shot blasting solution for steel plates and sections, contact us directly for a free quote. To watch more on-site working videos, visit:

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Sourcing Notes for International Buyers

When you request a shot blasting machine price from any manufacturer or supplier, compare more than the initial quotation: blast wheel quantity and power, abrasive recovery system, dust collector capacity and the cost of wear parts over the first years of operation. Jiangsu Dingtian Rust Removal and Coating Equipment Co., Ltd. is a China source factory with shot blasting manufacturing experience since 1998, quoting factory-direct and supporting OEM / ODM customization of the Q69 steel plate and section roller conveyor shot blasting line to your workpiece mix.

For an accurate quotation on the Q69 steel plate and section roller conveyor shot blasting line, send your workpiece drawings or photos, the target cleanliness grade (for example Sa2.5 per ISO 8501-1) and your daily throughput; our engineers will recommend the model, blast wheel layout and environmental configuration, together with a wear-parts list. Contact us by email or WhatsApp for a tailored proposal.

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