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Help CenterOEM Ductile Iron Cast Iron Universal Flexible Joint Coupling Multi-Functional Dismantling Type
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Welcome to Hebei Speed Torque Transmission Technology Co., Ltd. — Since our establishment in 2017, we have grown into a specialized manufacturer of high-quality pipe couplings and transmission components. With a factory spanning 3,000 to 5,000 square meters, a dedicated team of 101–200 employees, and an annual export value between US$5 million and US$10 million, we pride ourselves on delivering reliable, customizable solutions to clients across North America, South America, Europe, Asia, Africa, and Oceania. Our OEM Ductile Iron Cast Iron Universal Flexible Joint Coupling Multi-Functional Dismantling Type is engineered to meet the rigorous demands of modern pipeline systems, offering exceptional flexibility, ease of installation, and long-term durability.
This coupling is designed to accommodate misalignment, thermal expansion, and vibration in piping networks. Its dismantling feature allows for quick disassembly without cutting pipes, making maintenance and replacement straightforward. Manufactured from high-grade ductile iron and cast iron, it combines strength with corrosion resistance, ensuring a service life that meets industry expectations. Whether you need a standard size or a custom specification, our OEM capabilities allow us to tailor every aspect — from flange drilling to coating color — to your exact requirements.
Key Features & Technical Specifications
- Material Excellence: Ductile iron (grade 65-45-12 or equivalent) and cast iron (GG25) provide high tensile strength and impact resistance.
- Flexible Design: Allows angular deflection up to ±3°, lateral offset up to 5mm, and axial movement up to ±10mm (depending on size).
- Dismantling Feature: Built-in telescopic sleeve and locking mechanism enable easy separation of connected pipes without cutting or welding.
- Multi-Functional Use: Suitable for water, oil, gas, and slurry applications; compatible with flanged, threaded, or grooved connections.
- Corrosion Protection: Standard epoxy coating (optional hot-dip galvanizing or fusion-bonded epoxy) resists aggressive environments.
- Pressure Rating: PN10 / PN16 / PN25 (available upon request).
- Temperature Range: -20°C to +120°C (customizable for higher temperatures).
| Parameter | Standard Range | Remarks |
|---|---|---|
| Nominal Diameter (DN) | 50 – 600 mm | Custom sizes available |
| Working Pressure | 1.0 – 2.5 MPa | Higher upon request |
| End Connection | Flanged (DIN / ANSI / JIS) | Threaded or grooved optional |
| Coating Thickness | ≥ 250 μm (epoxy) | Optional fusion-bonded epoxy |
| Certification | ISO9001:2015 | Factory production standard |
Why Choose Our Multi-Functional Dismantling Coupling?
- Simplified Installation & Maintenance: The telescopic dismantling section allows quick length adjustment and disassembly, reducing downtime and labor costs.
- Versatility: One coupling can replace multiple conventional joints (expansion joint, flexible coupling, dismantling joint) — ideal for retrofit projects.
- Customizable to Your System: We offer OEM services including custom flange drilling, special coating colors, and alternative elastomer seals (NBR, EPDM, Viton) to match your media.
- Reliable Seal: Double-lip rubber gasket ensures leak-proof performance even under pressure fluctuations and thermal cycling.
- Proven Durability: Ductile iron body withstands mechanical stress and environmental corrosion, backed by rigorous quality control.
At Hebei Speed Torque, every coupling undergoes hydrostatic testing and dimensional inspection before shipment. Our ISO9001:2015 certified processes ensure consistent quality across all batch productions. We ship from the ports of Shanghai, Tianjin, and Qingdao, delivering reliable products to markets in Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and beyond.
Our Commitment to You: With over 5 years of export experience, US$5–10 million annual export value, and a dedicated team of engineers, we stand behind our products. We offer technical support, sample testing, and customized packaging. Whether you need a single unit for a critical project or bulk orders for large-scale infrastructure, we are ready to serve. Contact us today to discuss your coupling requirements and discover how our OEM ductile iron dismantling joint can optimize your pipeline system.
Frequently Asked Questions (FAQ)
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Q: What is the difference between this coupling and a standard flexible coupling?
A: Our multi-functional dismantling type integrates a telescopic section that allows axial adjustment and complete disassembly without cutting pipes, offering greater flexibility in installation and maintenance compared to fixed-length flexible couplings. -
Q: Can this coupling handle high-temperature applications?
A: Yes, the standard temperature range is -20°C to +120°C. For higher temperatures (up to 200°C), we can supply special seals and materials upon request. -
Q: Do you offer OEM with custom flange drilling patterns?
A: Absolutely. We support OEM customization including flange bolt holes per DIN, ANSI, JIS, or other standards. Please provide your drawing or specifications. -
Q: What coatings are available for corrosive environments?
A: Standard is epoxy coating (blue or black). We also offer hot-dip galvanizing, fusion-bonded epoxy, or special paint systems for extreme conditions. -
Q: How is the coupling sealed to prevent leaks?
A: A dual-lipped EPDM/NBR rubber gasket is compressed between the pipe ends and the coupling body, creating a robust seal. Seal material can be customized based on media compatibility. -
Q: What sizes are available and what is the lead time?
A: Standard DN50–DN600. Custom sizes up to DN1000 are possible. Typical lead time for standard items is 15–25 working days; custom orders require 25–40 days depending on complexity. -
Q: Do you provide samples for testing?
A: Yes, we offer sample pieces (paid or free based on value) for customer evaluation. You can also request factory inspection before shipment. -
Q: Is the product certified for international markets?
A: Our factory is ISO9001:2015 certified. Specific certifications (e.g., WRAS, UL) can be discussed for certain markets — please inquire for details.
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