In industries such as metal processing, automobile manufacturing, and heavy machinery, environmental control in the three core workshops (pickling, baking-spraying, and sandblasting) directly impacts production safety and equipment service life. Faced with extreme working conditions in these workshops – strong corrosion, flammability and explosion risks, and high wear – traditional industrial doors struggle to meet the demand for in-depth customization. Leveraging its scenario-based design capabilities, SEPPES Door Industry has created exclusive industrial sectional door systems with "one solution per scenario" for these workshops, helping filtration and purification workshops save nearly 300,000 yuan (local currency equivalent) in annual maintenance costs.

Pickling Workshop – Dual Protection Extends Equipment Service Life

The splashing strong acidic liquids in the pickling process pose a continuous corrosion threat to the metal structure of door bodies. After in-depth research, SEPPES’ technical team innovatively launched a "stainless steel main body + dynamic protection" solution:

1. Dual Metal Layer Design (Inner & Outer): The inner layer uses 0.42mm-thick 304 stainless steel plates, providing excellent corrosion resistance. The outer color steel plate enhances structural rigidity, forming a physical isolation barrier.

2. Corrosion-Resistant Stainless Steel Hinges: Hinges are also made of 304 stainless steel, eliminating the risk of chemical corrosion to hinges caused by acidic liquids.

3. Removable PVC Protective Curtains: A 0.8mm-thick PVC curtain is installed on the inner side of the door body to directly block splashing pickling liquids. This effectively prevents pickling water from coming into direct contact with the industrial sectional door panels and hinges, extending their service life. The cost of a single curtain replacement is only 80% of the cost of repairing door panels.

Integrated Baking-Spraying Workshop – BT4 Safety Explosion-Proof Design

The mixture of volatile organic compounds (VOCs) and dust generated during painting operations poses a flammability and explosion risk. For this scenario, SEPPES has customized an Ex d II BT4 explosion-proof electrical control system, building a safety defense line from three key dimensions:

1. Flameproof Control Cabinet: The cabinet has an IP54 protection rating, and its joint surfaces are precision-machined to a gap ≤ 0.15mm, ensuring excellent sealing and significantly reducing the risk of dust explosions.

2. Explosion-Proof Wiring Design: The control cabinet, buttons, conduits, adapters, etc., all meet explosion-proof requirements and are equipped with sealing flanges. Internal wiring uses cable trays, with each wire placed in a separate slot to prevent contact between wires. This largely avoids short circuits and static electricity, enhancing on-site safety.

3. Special Explosion-Proof Motor: Meets the BT4 explosion-proof rating.

Sandblasting Workshop – Flexible Protection Reduces Operation & Maintenance Costs

High-speed impacting steel grit particles in the sandblasting process cause severe wear to the door body surface. SEPPES adopts a "combination of rigidity and flexibility" protection strategy:

1. Reinforced Door Body: The base plate uses 0.42mm hot-dip galvanized steel plates with a surface baking paint treatment, achieving impact resistance equivalent to level 11 strong winds.

2. Modular PVC Curtain Body: A 0.8mm wear-resistant PVC curtain (with tear-resistant fibers inside) is hung on the inner side, with a tear strength of 600/600 (warp/weft). It can absorb over 90% of the impact energy from sand particles. The curtain is designed as independent units; local damage only requires replacement of the affected unit, reducing operation and maintenance costs by 80%.

3. Optimized Sealing Structure: A U-shaped EPDM (Ethylene Propylene Diene Monomer) rubber strip is embedded at the bottom of the industrial sectional door, paired with sealing strips on both sides. This blocks sand particles from escaping the sandblasting workshop, greatly improving cleanliness outside the working environment.

In-Depth Analysis: Why Choose SEPPES Over Hormann/Knorr-Bremse for Replacement?

The project manager openly stated during acceptance: "Foreign brands have advantages in standard products, but lack flexible responsiveness when facing complex working conditions. Three key strengths of SEPPES made us firmly choose domestic replacement":

1. Agile Customization Capability: Completes non-standard solution design in 15 days, supports on-site measurement and data modeling, and shortens the delivery cycle by 15 days compared to foreign brands.

2. Full-Life Cycle Service: Establishes exclusive customer equipment files for quick communication, reducing fault response time to 4 hours.

3. Significant Cost Advantage: The comprehensive cost (including installation, operation and maintenance) under the same configuration is 35%-40% lower than that of imported brands.

SEPPES Door Industry – The Preferred Partner for Global Mid-to-High-End Industrial Doors

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2. Technical Certification System: Possesses over 30 patented technologies and has passed international certifications such as CE, ISO9001, ISO14001, UL, and TUV. Its products have an operation time of over 100,000 hours.

3. Comprehensive Service Network: Cooperates with over 4,200 customers worldwide, with after-sales coverage in more than 100 regions across China. It has partnered with over 70 Fortune 500 companies, including CATL and BOE.

4. Risk Guarantee Mechanism: Covered by 15 million yuan in product liability insurance under Ping An Insurance of China, providing global warranty with 48-hour emergency response, ensuring customers have no worries.