
Low Smoke Halogen-Free Electrical Conduit Coupling
Quality Certification:
– Australian Standard
– Conforms to AS/NZS 2053, RoHS, REACH, CE, SGS, ISO
What Are Low-Smoke Halogen-Free Materials and Why Important?
Low-Smoke Halogen-Free (LSHF/LSZH) materials are specially engineered compounds designed to minimize the amount of smoke and toxic gases emitted when exposed to fire or high heat. These materials are free from halogens, which include chlorine, fluorine, bromine, and iodine, commonly found in traditional PVC or other polymer-based products. LSHF materials are often used in applications where safety, particularly in the event of a fire, is critical.
Low-Smoke Halogen-Free Conduit Coupling?
- A Low Smoke Halogen-Free (LSHF) Coupling is a specialized fitting used to join two sections of electrical conduit, designed to offer enhanced safety in the event of a fire.
- Unlike traditional couplings, which may release toxic halogen gases and thick smoke when exposed to heat or flame.
- These couplings are ideal for installations in environments where safety and environmental concerns are a priority, such as in public buildings, tunnels, and other critical infrastructure.
- LSHF couplings offer the benefits of both superior fire resistance and minimal environmental impact, making them an excellent choice for modern electrical installations that require high safety standards.
Video to learn more

Low-Smoke Halogen-Free Conduit Coupling
UV Resistance for Outdoor Applications
High Impact Resistance for Reliable Performance
Easy Installation for Quick Setup
Wide Range of Sizes for Versatile Applications



Properties
Brand: | Ctube | OEM: | Available |
Material: | LSZH | Length: | Customized |
Thickness: | Customized | OD Range: | 16-63mm |
Certification: | RoHS, CE, SGS, ISO | Color: | Gray or customized |
Fire Resistance: | V0 | UV Resistance: | Yes |
Conductivity: | Insulated | Hardness: | Rigid & impact-resistant |
Packing: | Plastic bags & PE films | Sample: | Free |
Country: | China | Factory: | Dongguan, Guangdong |
Size Chart
Product Code | Nominal Size | O.D. | I.D. | Outer Packing |
CT-HF20C | 20mm | 23.5mm | 20.0mm | 1000 units/carton |
CT-HF25C | 25mm | 28.5mm | 25.0mm | 720 units/carton |
CT-HF32C | 32mm | 37.0mm | 32.0mm | 360 units/carton |
CT-HF40C | 40mm | 44.5mm | 40.0mm | 210 units/carton |
CT-HF50C | 50mm | 55.6mm | 50.0mm | 120 units/carton |
FAQ
1.What is your MOQ ?
Depend on your order (different kinds of items have different MOQ )
2. What is your delivery time ?
Normally, the time of delivery duration is around 15-30 days.
3. What is the shipping port ?
We ship the goods via Shenzhen Port, Guangzhou Port.
4. What is your payment term ?
We accept T/T or L/C.
5. How should I contact you ?
You can contact us by submit the contact form or send us an email.
We Provide
Customization Solution
Endless Options For Your Specific Needs
Ctube focuses on the plastic electrical conduit field, around the customer’s demand for products, technology and services.
We always take additional measures to make our customers satisfied with the quality, efficiency and marketability of our products. With high quality and a wide range of products, we have established long-term cooperation with many customers from different areas of the world.
- Email : ctube@c-tube.net
- Phone: +86 13925733207
- Online Chat