Products
Large-Diameter Industry Paper Tubes
An Engineering Masterpiece for Heavy-Load Applications
Features
- Reinforced Strength: Multi-layer fiber composite structure resistant to crushing and bending.
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Flexible Manufacturing:
- Spiral Winding: Uniform strength for ultra-long tubes.
- Convolute Winding: Ideal for short, thick-walled, heavy-duty applications.
- Applications: Concrete column molding, wind turbine molds, and metal foil cores.
Details
Large-Diameter Special Paper Tubes
Definition
Large-diameter special paper tubes refer to cylindrical paper-based products with an inner diameter typically above 150mm (6 inches), manufactured through spiral or convolute winding processes using heavy-duty paper and adhesives. They are designed for industrial, construction, or heavy-load applications requiring exceptional strength and customized dimensions.
Key Features
l High Load-Bearing Capacity
l Reinforced with multiple paper layers, fiber composites, or waterproof coatings.
l Resistant to crushing, bending, and impact.
l Customizable Specifications
l Diameter: 150mm–1000mm+
l Length: Up to several meters, adjustable.
l Wall Thickness: 5mm–50mm+ depending on needs.
Material Options
l Paper Types: Kraft paper, test liner, recycled paper, waterproof paper.
l Coatings/Treatments: Waterproof, fire-retardant, anti-static, or laminated finishes.
Common Applications
l Construction -Concrete column molding, temporary structural supports.
l Textile & Rolls-Core tubes for large fabric rolls, carpet rolls, or industrial films.
l Packaging & Logistics -Heavy-duty shipping tubes for posters, maps, or industrial parts.
l Industrial Manufacturing -Carrier cores for paper, foil, or composite materials in production lines.
l Renewable Energy-Molds for wind turbine components or insulation housings.
Manufacturing Process
l Spiral Winding
Continuous paper strips wound at an angle for uniform strength.
Suitable for ultra-long tubes.
l Convolute Winding
Paper layers wrapped straight around a mandrel for thick walls.
Ideal for short, thick-walled tubes.
l Finishing
Cutting, grinding, punching, printing, or coating as required.
Advantages
l Cost-Effective -Lower cost than metal/plastic alternatives for many uses.
l Eco-Friendly: Recyclable, biodegradable, often made from recycled paper.
l Lightweight Yet Strong: Easy to handle and transport without sacrificing durability.
l Design Flexibility : Easily customized in size, strength, and surface treatment.
Quality Standards
l Load-bearing tests (e.g., radial crush strength, edge compression).
l Dimensional accuracy (diameter, length, roundness tolerance).
l Environmental resistance (humidity, temperature, chemical exposure if needed).
Parameters
| Technical Item | Range (Metric) | Range (Imperial) | Tolerance |
|---|---|---|---|
| Inner Diameter (ID) | 150 – 1000 mm+ | 6.0" – 40.0"+ | ± 0.5 mm |
| Wall Thickness (WT) | 5 – 50 mm | 0.20" – 2.0" | ± 0.3 mm |
| Max Length | Up to 12000 mm | Up to 40 ft | ± 2.0 mm |
| Radial Crush Strength | Up to 3000 kgf | Up to 6600 lb+ | Tested to Std |
Find answers Our Asked Questions
1. Are you a direct manufacturer?
Yes, we operate our own specialized factory in Jiangsu Province, strategically positioned near Shanghai Port. This enables us to combine skilled craftsmanship with efficient logistics, delivering high-quality industrial and packaging tubes on time and at competitive prices.
2. How do you ensure product quality and precision?
We maintain quality from start to finish through advanced production equipment, strict process controls, and a dedicated quality assurance team. Every tube undergoes multiple inspections to ensure dimensional accuracy, structural strength, and print consistency.
3 . What is your process for custom orders?
We follow a clear confirmation process: design proof → sample approval → bulk production. This ensures your specifications are met before manufacturing begins, minimizing errors and ensuring satisfaction.
4. Can I get a sample? Is it free?
Yes. Stock samples are free of charge. Custom samples are available for a small fee, which is credited toward your first official order. Samples are typically shipped within 5–7 business days.
5. What is your production lead time?
Standard orders are completed within 10–15 working days after confirmation and deposit. Rush orders are accommodated whenever possible, with progress updates provided throughout production.
6. Is there a minimum order quantity (MOQ)?
Our standard MOQ is 500 pieces per specification. We offer volume discounts and flexible terms for repeat or large-volume partners.
7. Who handles shipping and import costs?
We typically quote FOB Shanghai. Buyers are responsible for international freight, customs clearance, and destination charges. We can also arrange CIF/DAP shipping upon request and provide all necessary export documents.
8. Do you serve specific industries like textiles or precision packaging?
Absolutely. We produce high-performance tubes for textile winding (POY/FDY/DTY), foam-protected tubes for sensitive components, heavy-duty cores for films and composites, and custom-printed tubes for retail. Tell us your application—we’ll tailor a solution.
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