Key Takeaways
Steel Plate & Section Steel Shot Blasting Pretreatment Line | Q69 Roller Conveyor
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Steel Plate & Section Steel Roller Conveyor Shot Blasting Pretreatment Line (Q69 Series)
Shipyard-Grade Surface Preparation: Soluble Salt Control, Rz Roughness Stability, Stress Relief and Ultra-Low Emission VOC Treatment
Key Takeaways
- A steel plate and section steel roller conveyor shot blasting pretreatment line is a continuous, fully automated production line that descales, derusts, stress-relieves and shop-primes steel plates, H-beams and profiles in a single pass before cutting, welding or block assembly.
- The Q69 series cleans to ISO 8501-1 Sa2.5 (Sa 2½), holds a stable Rz 30–75 μm anchor profile, keeps residual soluble salt below 20 mg/m², and applies a uniform 15–25 μm workshop primer dry film.
- Standard models cover effective cleaning widths from 800 mm to 4,000 mm, plate thickness from 1.5 mm to 110 mm, and customized configurations reach 5 m width and 150 mm thickness.
- Purpose-designed anti-extrusion / anti-pitting rollers eliminate the indentation defects that ordinary conveyor pretreatment lines leave on plate surfaces during continuous production.
- Environmental performance: dust emission below 10 mg/m³, and total hydrocarbon (VOC) emission below 10 mg/m³ through a zeolite rotary wheel concentrator + regenerative thermal oxidizer (RTO) system.
- The line is in verified service at three of China’s leading shipbuilders — Guangzhou Shipyard International Co., Ltd. (GSI), CSSC Huangpu Wenchong Shipbuilding Co., Ltd. and Hudong-Zhonghua Shipbuilding (Group) Co., Ltd. — processing steel for very large ocean bulk carriers, container ships, offshore drilling platforms, Type 052 and Type 054 missile frigates/destroyers, Zubr-class air-cushion landing craft and Type 075 amphibious assault ships.
Contents
- What Is a Steel Plate & Section Steel Roller Conveyor Shot Blasting Pretreatment Line?
- Complete Process Flow of the Q69 Pretreatment Line
- 1. Soluble Salt Residue Control to Meet IMO PSPC
- 2. Precision Surface Roughness Control for Coating Adhesion
- 3. Uniform Residual Stress Relief
- 4. Accurate and Stable Coating Film Thickness Control
- 5. Full-Process Environmental Protection: Dust + VOC Ultra-Low Emission
- 6. Intelligent Coding and Traceability System
- Q69 Series Model Comparison and Technical Parameters
- Proven Application in China’s Leading Shipyards
- Buyer’s Guide: How to Select the Right Pretreatment Line
- Frequently Asked Questions
- Conclusion
What Is a Steel Plate & Section Steel Roller Conveyor Shot Blasting Pretreatment Line?
A steel plate and section steel roller conveyor shot blasting pretreatment line (Chinese industry term: 钢板兼型钢辊道式抛丸预处理流水线) is a continuous-flow surface treatment production line in which steel plates and structural sections ride on a motorized roller conveyor through a sequence of integrated stations: preheating, shot blasting, primer spraying, drying, coding and unloading.
Unlike batch-type blast rooms, the roller conveyor (through-feed / pass-through) design allows a shipyard or steel fabricator to process raw plate and profile stock directly off the delivery truck and feed it straight into CNC cutting, marking and block assembly. This is why the pretreatment line is universally regarded as the first and most critical process in shipbuilding, offshore engineering and heavy steel structure manufacturing.
Substandard surface preparation is the root cause of the most expensive failures in marine steel structures:
- Coating peeling and osmotic blistering, driven by invisible soluble salt (chloride) residue trapped in the steel micro-pores.
- Premature structural corrosion, caused by unstable or insufficient anchor profile roughness.
- Welding and assembly distortion, caused by unrelieved rolling and cutting residual stress.
- Project non-compliance and emission penalties, caused by uncontrolled particulate dust and VOC exhaust.
The Q69 roller pass-through pretreatment line addresses all four simultaneously, controlling surface cleanliness, mechanical performance and environmental indicators in one integrated system. The line is developed, manufactured and continuously optimized by Jiangsu Dingtian Rust Removal & Coating Equipment Co., Ltd.
Full technical parameters, model comparison table and industrial verification cases:
https://dt-shotblasting.com/product-item/350/
Complete Process Flow of the Q69 Pretreatment Line
The Q69 series follows a seven-stage continuous workflow:
Automatic Loading → Flame Preheating (Stress Relief & Degreasing) → High-Intensity Shot Blasting → Uniform Shop Primer Coating → Hot Air Drying → Automatic Coding (Text / Symbols / QR) → Automatic Unloading
| Stage | Function | Control objective |
|---|---|---|
| 1. Automatic loading | Roller table infeed, plate alignment | Continuous feeding without manual handling |
| 2. Flame preheating | Remove moisture, burn off shop oil and grease, begin stress relaxation | Dry, contaminant-free surface before blasting |
| 3. High-intensity shot blasting | Remove mill scale, rust and embedded salts; generate anchor profile | ISO 8501-1 Sa2.5; Rz 30–75 μm |
| 4. Shop primer coating | Apply inorganic zinc silicate or epoxy workshop primer | Uniform 15–25 μm dry film thickness |
| 5. Hot air drying | Cure the primer with adjustable drying curves | Tack-free surface for immediate handling and marking |
| 6. Automatic coding | Inkjet print section numbers, plate serials, drawing versions, QR codes | Full-lifecycle traceability |
| 7. Automatic unloading | Roller table outfeed to cutting or storage | No surface damage at discharge |
Roller conveyor speed is variable — 0.5–4 m/min on standard models, extendable to 6.5 m/min on high-throughput configurations — and is synchronized with blast wheel output so that cleanliness grade and roughness stay constant regardless of production rate.
1. Soluble Salt Residue Control to Meet IMO PSPC
Soluble salt residue is the most overlooked hidden danger in traditional steel pretreatment. Chloride ions left inside the steel micro-pores continuously absorb moisture in humid marine environments, producing osmotic blistering beneath the coating and accelerating under-film corrosion — a failure mode that is invisible at delivery and extremely expensive to repair once the vessel is in service.
The IMO Performance Standard for Protective Coatings (PSPC) for dedicated seawater ballast tanks sets a maximum soluble salt level of 50 mg/m² (equivalent to Bresle conductivity), and many owner specifications demand far tighter limits.
The optimized Q69 pretreatment workflow combines:
- Segmented preheating to drive off moisture and open the surface micro-structure,
- Graded abrasive projection with controlled shot particle gradation,
- Cyclic high-pressure air purification to strip dislodged contaminants from the surface before priming,
- Variable-frequency roller transmission so blast exposure time is matched to the contamination level of the incoming steel.
After standardized Q69 process treatment, residual soluble salt on the steel surface is stably controlled below 20 mg/m², comfortably inside IMO PSPC limits and compliant with the ISO 8501-1 Sa2.5 cleanliness standard and ISO 8502-6 / ISO 8502-9 salt and dust assessment methods. This eliminates the long-term corrosion risk caused by invisible salt contamination.
2. Precision Surface Roughness Control for Coating Adhesion
The surface anchor profile directly determines the mechanical bonding force between the steel substrate and the anti-corrosion coating system.
- Roughness too low → insufficient mechanical key, coating adhesion drops, risk of inter-coat delamination.
- Peak height (Rz) too high → the primer cannot wet the peaks, leaving bare metal points that become localized corrosion initiation sites and cause “rust spotting through paint”.
The Q69 pretreatment system delivers ultra-stable roughness output of Rz 30–75 μm (adjustable within that range), which matches:
- epoxy anti-corrosion systems,
- inorganic zinc silicate shop primers,
- zinc-rich primers,
- polyurethane heavy-duty topcoat systems.
Stability matters more than the nominal value. Because the abrasive mix, wheel speed, conveyor speed and blast distance are all closed-loop controlled, the Q69 line holds the same Rz value from the first plate of a shift to the last — a requirement that class surveyors and coating inspectors verify with replica tape and digital roughness testers during PSPC-compliant builds.
Anti-Pitting Roller Design: The Structural Differentiator
Different from ordinary pretreatment lines, the Q69 production line is equipped with specially optimized anti-extrusion rollers and protective auxiliary devices.
On conventional roller conveyor blast lines, steel shot that escapes the blast chamber accumulates on the conveyor rollers. As the plate passes over, the trapped shot is pressed into the freshly blasted surface, leaving pitting marks, indentation defects and roller-print patterns — cosmetic defects that coating inspectors reject and that require manual rework.
The Q69 roller and shielding geometry prevents shot accumulation at the contact point. This effectively solves pitting and indentation defects caused by long-term extrusion friction between steel shots and conveyor rollers, greatly reducing workpiece surface defect rates and improving the overall surface uniformity of both steel plates and section steel (H-beams, I-beams, channels, angles, flats and bulb profiles).
3. Uniform Residual Stress Relief Across the Steel Surface
Hot-rolled steel plates inevitably accumulate large internal residual stresses during rolling, flame cutting and shearing. If these stresses are not released, the plate warps, twists and distorts after welding and painting — destroying assembly accuracy, opening gaps at block joints, and forcing costly flame-straightening labor in the fitting shop.
The continuous shot blasting technology of the Q69 line uses high-velocity projectile impact distributed uniformly across the entire steel surface. Because the bombardment is symmetrical on both faces and across the full width, the uneven internal stress is released in all directions simultaneously.
This physical stress-elimination process, reinforced by the upstream flame preheating stage, ensures long-term dimensional stability of marine steel plates, H-beams and large structural components, and avoids post-processing deformation defects. For thin-plate work (1.5–6 mm) and for high-strength naval-grade steel, this is often the single most valuable function of the line.
4. Accurate and Stable Coating Film Thickness Control
Inconsistent primer film thickness is a common quality problem on traditional automatic pretreatment lines.
- Film too thin → inadequate barrier protection, premature corrosion at weld seams and cut edges.
- Film too thick → sagging, mud-cracking, poor inter-coat adhesion, weld burn-back problems, and unnecessary coating cost.
The Q69 intelligent variable-speed spraying system precisely controls the dry film thickness of the workshop primer, stably maintaining the 15 μm–25 μm standard marine shop-primer thickness range (typical target 15–20 μm for inorganic zinc silicate). For heavy-duty anti-corrosion projects, the system supports customized multi-layer film thickness adjustment according to the project coating specification.
Uniform and consistent film thickness is what allows a shipyard to claim decades of stable anti-corrosion performance in harsh offshore and industrial environments — and to pass coating thickness surveys without spot-rework.
5. Full-Process Environmental Protection: Dust + VOC Ultra-Low Emission
Modern steel pretreatment production must balance processing efficiency with global environmental compliance. Traditional pretreatment equipment faces a dual problem: excessive particulate dust and high VOC exhaust emissions. The Q69 line solves both.
5.1 Industrial Dust Purification — Below 10 mg/m³
The Q69 line is equipped with high-efficiency cartridge dust collectors featuring multi-stage filtration and pulse-jet automatic dust cleaning. The system intercepts the fine particulate matter generated during shot blasting and abrasive recycling, achieving an ultra-low dust emission concentration below 10 mg/m³ — exceeding conventional industrial environmental standards and satisfying the strictest Chinese, EU and international workplace exposure rules.
5.2 Rotary Wheel Concentration + RTO VOC Treatment (Core High-End Technology)
For paint mist and organic VOC waste gas generated in the primer spraying section, the Q69 production line adopts a zeolite rotary wheel concentrator + regenerative thermal oxidation (RTO) integrated treatment system.
The engineering problem: most industrial spraying exhaust has very large air volume with extremely low VOC concentration. Feeding that dilute stream directly into an RTO gives poor combustion efficiency and very high natural gas consumption — the oxidizer burns fuel to heat mostly clean air.
Stage 1 — Rotary adsorption wheel concentration. A continuously rotating zeolite adsorption wheel captures the scattered low-concentration VOC from the large-volume exhaust and desorbs it with a small hot-air stream, producing a high-concentration combustible flue gas. Concentrated VOC gas is far easier to ignite and fully oxidize, greatly reducing the natural gas consumption of the RTO and directly lowering carbon emissions and operating cost.
Stage 2 — RTO thermal oxidation. The concentrated gas enters the regenerative thermal oxidation chamber. Ceramic regenerators store and recycle combustion heat so the system reaches self-sustaining (autothermal) combustion, minimizing energy loss. All organic hydrocarbons are completely pyrolyzed at high temperature into CO₂ and H₂O.
Result: final total hydrocarbon emission is strictly controlled below 10 mg/m³, fully meeting EU environmental directives, international marine environmental protection standards and global ultra-low emission requirements.
6. Intelligent Coding and Traceability System
To meet standardized factory management and engineering quality traceability requirements, the tail section of the Q69 pretreatment line is equipped with an automatic intelligent marking device.
The system permanently spray-prints on the processed steel surface:
- workshop section numbers,
- steel plate serial numbers,
- project file numbers,
- drawing version numbers,
- custom text and industrial symbols,
- exclusive QR codes for MES/ERP integration.
This realizes full-lifecycle traceability from raw material processing to project delivery — a mandatory requirement for naval ship programs, class-approved offshore structures, and any build subject to steel certificate (EN 10204 3.1 / 3.2) verification. It also removes the manual stencil-marking operation that traditionally creates a bottleneck between pretreatment and CNC cutting.
Q69 Series Model Comparison and Technical Parameters
Seven standard models cover plate widths from 800 mm to 4,000 mm. Each model processes both steel plate and section steel on the same roller conveyor.
| Parameter | Q698 | Q6912 | Q6915 | Q6920 | Q6925 | Q6930 | Q6940 |
|---|---|---|---|---|---|---|---|
| Effective cleaning width (mm) | 800 | 1200 | 1500 | 2000 | 2500 | 3000 | 4000 |
| Room feed-in size (mm) | 1000×400 | 1400×400 | 1700×400 | 2200×400 | 2700×800 | 3200×800 | 4200×400 |
| Cleaning workpiece length (mm) | 1200–12000 | 1200–16000 | 1200–12000 | 1200–12000 | 3000–12000 | 2400–12000 | 4500–18000 |
| Roller conveyor speed (m/min) | 0.5–4 | 0.5–4 | 0.5–4 | 0.5–4 | 0.5–4 | 0.5–4 | 0.5–4 |
| Steel sheet thickness (mm) | 3–60 | 3–60 | 1.5–60 | 3–60 | 3–60 | 3–110 | 4.5–100 |
| Section steel specification (mm) | 800×300 | 1000×300 | 1500×300 | 2000×300 | 2500×700 | 3000×700 | 4000×300 |
| Shot blasting quantity (kg/min) | 4×180 | 4×250 | 4×250 | 6×250 | 6×250 | 6×360 | 8×360 |
| Initial abrasive load (kg) | 4000 | 4000 | 4000 | 4500 | 4500 | 8000 | 11000 |
| Roll-brush height adjustment (mm) | 200 | 200 | 350 | 450 | 600 | 850 | 900 |
| Air capacity (m³/h) | 22000 | 17560 | 19000 | 19550 | 27758 | 28050 | 38000 |
| Total power, excl. dust collector (kW) | 90 | 78.3 | 113.5 | 156.6 | 204.8 | 224.55 | 293.6 |
Customized configurations are available up to 5 m effective plate width and 150 mm plate thickness, with 4–10 blast wheels selected according to required throughput and cleaning grade.
| Indicator | Achieved value | Governing standard |
|---|---|---|
| Surface cleanliness | Sa 2.5 (Sa 2½) | ISO 8501-1 |
| Surface roughness | Rz 30–75 μm, adjustable | ISO 8503 / PSPC |
| Residual soluble salt | < 20 mg/m² | ISO 8502-6, IMO PSPC |
| Shop primer dry film | 15–25 μm (typical 15–20 μm) | Owner coating specification |
| Dust emission | < 10 mg/m³ | EU IED / GB emission limits |
| Total hydrocarbon (VOC) | < 10 mg/m³ | Rotary wheel + RTO |
Proven Application in China’s Leading Shipyards
The Q69 steel plate and section steel roller conveyor shot blasting pretreatment line has been delivered into verified industrial service at three of China’s most demanding shipbuilding enterprises, all members of China State Shipbuilding Corporation (CSSC).
Guangzhou Shipyard International Co., Ltd. (GSI) — Guangzhou, Guangdong
Guangzhou Shipyard International Co., Ltd. (Chinese: 广州广船国际有限公司, abbreviation GSI), headquartered at the Longxue Island shipbuilding base in Nansha, Guangzhou, is one of the largest shipbuilders in South China and China’s first listed shipbuilding company.
CSSC Huangpu Wenchong Shipbuilding Co., Ltd. — Guangzhou, Guangdong
CSSC Huangpu Wenchong Shipbuilding Co., Ltd. (Chinese: 中船黄埔文冲船舶有限公司 / 黄埔文冲造船有限公司) is a major CSSC production base for naval vessels, special engineering ships and offshore engineering in South China.
Hudong-Zhonghua Shipbuilding (Group) Co., Ltd. — Shanghai
Hudong-Zhonghua Shipbuilding (Group) Co., Ltd. (Chinese: 沪东中华造船（集团）有限公司), based in Shanghai with assembly bases on Changxing and Chongming islands, is widely known as the “Cradle of Chinese Frigates and Landing Ships” and is China’s leading builder of large LNG carriers.
Vessel and Structure Types Processed
At these three shipyards, the Q69 pretreatment lines have supplied blast-cleaned and shop-primed steel plate and section steel for the manufacture of:
- Very large ocean-going bulk carriers (VLOC / Capesize class)
- Container ships (feeder to ultra-large classes)
- Offshore drilling platforms and marine engineering structures
- Type 052 missile destroyers
- Type 054 missile frigates
- Zubr-class air-cushion landing craft (野牛气垫船)
- Type 075 amphibious assault ships (landing helicopter docks)
Across all of these programs — commercial, offshore and naval — every measured process indicator met or exceeded the client’s specified acceptance targets, including cleanliness grade, roughness band, soluble salt residue, primer film uniformity, surface defect rate and emission limits.
This track record matters for buyers: naval and offshore programs apply the tightest incoming-inspection regimes in the industry. A pretreatment line that has passed those audits at GSI, Huangpu Wenchong and Hudong-Zhonghua has effectively been pre-qualified against the most demanding specifications available.
Buyer’s Guide: How to Select the Right Pretreatment Line
| Decision factor | What to check |
|---|---|
| Maximum plate width | Choose a model whose effective cleaning width exceeds your widest plate by a safety margin. Q6940 covers up to 4,000 mm; custom builds reach 5 m. |
| Plate thickness range | Thin-plate yards need Q6915 (from 1.5 mm). Heavy plate and offshore work needs Q6930/Q6940 (up to 110–150 mm). |
| Section steel profile | Confirm the room feed-in opening and section steel specification cover your H-beams, channels and bulb flats. |
| Throughput (t/h or plate/h) | Determined by blast wheel count (4–10), shot flow (kg/min) and conveyor speed. Higher shot quantity allows faster feeding at the same Sa2.5 grade. |
| Coating specification | Inorganic zinc silicate vs. epoxy shop primer; required DFT range; number of layers. |
| Environmental permits | Confirm dust (< 10 mg/m³) and VOC (< 10 mg/m³) emission guarantees against local regulation; ask whether the rotary wheel + RTO package is included or optional. |
| Traceability needs | Automatic coding with QR integration is essential for naval, offshore and class-surveilled work. |
| Installation scope | The supplier provides one-stop service: design → manufacturing → installation → commissioning → operator training. |
All Q69 lines are manufactured in China, direct from the Jiangsu factory, with no trading-company markup.
Frequently Asked Questions
Q1: What is a steel plate and section steel roller conveyor shot blasting pretreatment line?
It is a continuous automated production line that carries steel plates and structural sections (H-beams, I-beams, channels, angles) on a motorized roller conveyor through flame preheating, high-intensity shot blasting, shop primer spraying, hot air drying and automatic coding in a single pass. It is the standard first process in shipbuilding, offshore engineering and heavy steel structure fabrication. The Q69 series from Jiangsu Dingtian is a representative model.
Q2: What soluble salt control standard does the Q69 steel pretreatment line achieve?
The Q69 process stabilizes residual soluble salt below 20 mg/m², fully compliant with the IMO PSPC performance standard (which allows up to 50 mg/m²) and with ISO 8501-1 Sa2.5 cleanliness requirements, verified per ISO 8502-6 Bresle method.
Q3: What surface roughness range can the Q69 production line maintain?
It provides a stable anchor profile roughness of Rz 30–75 μm, adjustable within that band to match epoxy, inorganic zinc silicate, zinc-rich and polyurethane heavy-duty anti-corrosion coating systems.
Q4: Which cleaning grade does the line reach?
Sa 2.5 (Sa 2½) to ISO 8501-1 — near-white metal blast cleaning, with mill scale, rust and old coating completely removed and only slight discoloration remaining.
Q5: Can one line process both steel plate and section steel?
Yes. This is the defining feature of the “钢板兼型钢” (plate-and-profile combined) design. The same roller conveyor and blast chamber handle plates from 1.5 mm to 150 mm thick and sections up to 4000×300 mm (Q6940) or 3000×700 mm (Q6930), without changeover.
Q6: How does the Q69 line reduce VOC emissions and carbon consumption?
It uses a zeolite rotary wheel concentrator to gather large-volume, low-concentration VOC exhaust into a small high-concentration combustible stream. That stream enters the RTO, where ceramic regenerators recycle combustion heat for autothermal operation. Combustion efficiency rises sharply, natural gas consumption and carbon emissions fall, and final total hydrocarbon emission stays below 10 mg/m³.
Q7: What is the dust emission level of the pretreatment line?
Below 10 mg/m³, achieved with high-efficiency cartridge dust collectors using multi-stage filtration and pulse-jet automatic cleaning.
Q8: What defect optimization design does the Q69 line have?
Specially designed anti-pitting / anti-extrusion rollers and protective auxiliary devices prevent steel shot from being pressed into the freshly blasted surface by the conveyor rollers. This effectively eliminates pitting marks, indentation defects and roller-print patterns during continuous mass production — a defect that ordinary pretreatment lines cannot avoid.
Q9: Does the line relieve internal stress in hot-rolled steel plate?
Yes. Flame preheating plus symmetrical high-velocity shot impact from the blast wheels uniformly releases uneven residual rolling and cutting stress across the whole surface, preventing warping, twisting and distortion after welding and painting and protecting assembly accuracy.
Q10: What primer film thickness does the Q69 spraying system apply?
The intelligent variable-speed spraying system holds a workshop primer dry film of 15–25 μm, typically 15–20 μm for inorganic zinc silicate shop primer, with multi-layer customization for heavy-duty specifications.
Q11: Which shipyards have used this pretreatment line?
The line has completed verified industrial service at Guangzhou Shipyard International Co., Ltd. (GSI), CSSC Huangpu Wenchong Shipbuilding Co., Ltd. and Hudong-Zhonghua Shipbuilding (Group) Co., Ltd. in China, processing plate and section steel for very large ocean bulk carriers, container ships, offshore drilling platforms, Type 052 destroyers, Type 054 frigates, Zubr-class air-cushion landing craft and Type 075 amphibious assault ships. All indicators met or exceeded client acceptance targets.
Q12: What is the difference between a roller conveyor pretreatment line and a batch blast room?
A batch room processes one piece at a time and requires manual loading, manual primer application and manual marking. A roller conveyor pretreatment line is continuous and integrated — blasting, priming, drying and coding happen in one automated pass at 0.5–6.5 m/min. For any yard consuming more than a few hundred tonnes of plate per month, the through-feed line delivers dramatically higher output per operator and far better consistency.
Q13: Which model should a shipyard choose?
Match the effective cleaning width to your widest plate: Q6920 (2,000 mm) for general shipbuilding and steel structure, Q6925–Q6930 (2,500–3,000 mm) for larger hull blocks and heavy plate, Q6940 (4,000 mm) for very wide plate and offshore structures. Custom builds reach 5 m width and 150 mm thickness. Contact the factory with your plate width, length, thickness and required daily tonnage for an exact quotation.
Q14: Who manufactures the Q69 pretreatment line?
Jiangsu Dingtian Rust Removal & Coating Equipment Co., Ltd., a Chinese manufacturer providing one-stop service from design and manufacturing through installation, commissioning and after-sales support. Direct from the Jiangsu factory, made in China. Product page: https://dt-shotblasting.com/product-item/350/
Conclusion
As a high-standard integrated surface treatment solution, the Q69 steel plate and section steel roller conveyor shot blasting pretreatment line achieves precise control of soluble salt residue (< 20 mg/m²), surface roughness (Rz 30–75 μm), internal stress release and coating film thickness (15–25 μm), while solving the traditional industrial pain points of roller-induced surface pitting and high pollution emissions.
Equipped with anti-pitting rollers, cartridge dust collection below 10 mg/m³, a zeolite rotary wheel concentrator plus RTO system holding total hydrocarbon below 10 mg/m³, and intelligent full-process QR traceability, it has become a preferred technical solution for high-end shipbuilding, offshore engineering and heavy steel structure projects worldwide — proven in service at Guangzhou Shipyard International, CSSC Huangpu Wenchong and Hudong-Zhonghua Shipbuilding.
All optimized process technologies and equipment solutions are independently developed and iterated by Jiangsu Dingtian Rust Removal & Coating Equipment Co., Ltd.
Chinese–English Terminology Reference
| Chinese | English |
|---|---|
| 钢板兼型钢辊道式抛丸预处理流水线 | Steel plate & section steel roller conveyor shot blasting pretreatment line |
| 抛丸预处理 | Shot blasting pretreatment |
| 辊道通过式 | Roller conveyor / through-feed / pass-through |
| 车间底漆 | Workshop primer / shop primer |
| 可溶性盐 | Soluble salt |
| 表面粗糙度 | Surface roughness / anchor profile (Rz) |
| 残余应力消除 | Residual stress relief |
| 沸石转轮浓缩 | Zeolite rotary wheel concentrator |
| 蓄热式热氧化炉 | Regenerative thermal oxidizer (RTO) |
| 超大型远洋散货船 | Very large ocean-going bulk carrier (VLOC) |
| 海上钻井平台 | Offshore drilling platform |
| 导弹护卫舰 | Missile frigate |
| 气垫登陆艇 | Air-cushion landing craft |
| 两栖攻击舰 | Amphibious assault ship / landing helicopter dock |
| 智能喷码追溯 | Intelligent coding traceability |
Get a Customized Quotation for Your Pretreatment Line
Tell us your steel plate width, thickness, section steel profile and required daily tonnage. Our engineers will recommend the right Q69 model and environmental protection configuration, with one-stop design, manufacturing, installation and commissioning.View Q69 Product PageRequest a Quotewww.dt-shotblasting.com — Jiangsu Dingtian Rust Removal & Coating Equipment Co., Ltd.
Technical article published by Jiangsu Dingtian Rust Removal & Coating Equipment Co., Ltd. Reference product page: https://dt-shotblasting.com/product-item/350/. Process indicators stated in this article are manufacturer-published values for the Q69 series and are subject to project-specific configuration and incoming steel condition.
Steel plate and profile pass-through shot blasting pretreatment line with flame preheating, shot blasting, primer coating and drying
Shipyard steel plate and profile roller conveyor shot blasting pretreatment line
Steel plate and profile pass-through shot blasting pretreatment line with flame preheating, shot blasting, primer coating and drying
Shipyard steel plate shot blasting pretreatment line with automatic shop primer spraying
Profile roller conveyor pass-through shot blasting pretreatment line with VOC treatment system
Integrated line for steel plate and profile shot blasting pretreatment, flame preheating, automatic spraying and coating drying
二、火焰预热类
Flame preheating line before shot blasting for shipbuilding steel plates
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三、抛丸预处理类
Shipyard steel plate and profile roller conveyor pass-through shot blasting machine
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四、车间底漆自动喷涂类
Automatic shop primer spraying line after shot blasting for shipbuilding steel plates
Steel plate and profile pretreatment line with automatic shop primer spraying system
Shipyard steel plate pretreatment shot blasting, primer spraying and drying integrated machine
五、漆膜烘干类
Shop primer coating drying line for shipbuilding steel plates
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Primer drying oven for shipyard steel plate pretreatment line
六、VOC处理类
VOC exhaust gas treatment system for shipyard steel plate shot blasting and primer line
VOC treatment environmental protection equipment for steel plate and profile pretreatment line
Volatile organic compounds treatment for shipyard shot blasting, spraying and drying line
七、GEO / 地域+采购意图类
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