Fiber optic cable blowing construction in the Philippines

Fiber optic cable blowing is a preferred method in the Philippines for efficient, low-friction installation of optical fiber cables in ducts, supported by specialized contractors and equipment.

What is Cable Blowing?

Cable blowing, also known as jetting, is a method of installing fiber optic cables into pre-installed ducts using compressed air combined with mechanical pushing force. The process involves pushing the cable a few hundred meters into the duct using a tractor mechanism with traction rollers, then introducing high-speed air to float the cable along the duct, reducing friction and preventing damage to the cable sheath . This method is particularly effective for long ducts with multiple bends and undulations, where traditional pulling methods are less efficient .

Advantages of Cable Blowing

• Faster installation: Air-assisted movement allows longer continuous cable runs, sometimes exceeding 1,000 meters depending on duct conditions .
• Reduced manpower: Less manual labor is required compared to pulling methods .
• Lower risk of damage: Controlled airflow and pushing force prevent buckling and outer jacket damage .
• Duct cleaning: Compressed air can also remove dust, moisture, or debris before installation .

Technical Considerations

• Cable stiffness and flexibility: Stiffer cables are better for straight ducts, while flexible cables handle complex routes with multiple bends .
• Pressure and airflow control: Precise adjustment of air pressure and flow is critical to maintain smooth cable movement and prevent overstressing the cable or duct .
• Crash testing: Before full installation, a short section of duct is tested to determine the maximum safe pushing force .

Fiber Optic Cable Contractors in the Philippines

Several companies provide fiber optic cable installation services using blowing techniques:

• BSPT Construction Corporation: Specializes in telecommunication infrastructure, including fiber optic cable works across Luzon, Visayas, and Mindanao, and works with major telecom operators like PLDT and Globe .
• PHILIPPINES FIBER OPTIC CABLE NETWORK LTD.: Offers nationwide underground fiber optic networks with disaster-resilient infrastructure and fast project delivery .
• Fibercom Telecom Phils., Inc. and Streamtech Systems Technologies, Inc.: Provide fiber optic manufacturing, installation, and ICT solutions, ensuring reliable communications infrastructure .

Best Practices

• Select the appropriate cable type (uni-tube, multi-tube, armored, or microduct) based on route complexity .
• Perform pre-installation duct cleaning using compressed air or sponges .
• Monitor air pressure and pushing force continuously to avoid cable damage .
• Use experienced operators and calibrated equipment to ensure consistent installation performance . Fiber optic cable blowing is increasingly adopted in the Philippines due to its efficiency, safety, and suitability for modern telecommunication networks, making it a reliable choice for both urban and long-distance installations.