Factory-wholesale PP ductwork, exhaust ventilation pipe, fire-retardant PP duct, PP ventilation pipe

PP square pipes, when passing through fireproof and explosion-proof walls or floors that require sealing, should be equipped with pre-buried pipes or protective sleeve pipes, with the steel plate thickness not less than 1.6mm. The gap between the air duct and the protective sleeve pipe should be sealed with a flexible material that is non-flammable and harmless to humans.

Manual shut-off valve installation: Ensure the arrow on the valve is aligned with the airflow direction of the duct.

Ductwork, silencers, and other components should be cleaned thoroughly to ensure no oil stains or loose dust. Ports should be sealed when work is paused or completed.

The duct's strength should be sufficient to prevent cracking at the seams under 1.5 times the working pressure.

Installation Precautions for Ductwork and Duct Calculation: Ensure the main duct velocity is 5m/s and the branch duct velocity is 3m/s under the condition of minimizing the duct design size. The duct calculation formula is: Equipment Airflow ÷ 3600 ÷ Velocity = Duct Cross-sectional Area. Also, pay attention to ensuring the duct: Long side ÷ Short side ≤ 4; generally do not exceed 4. Special cases should be treated separately. Duct Opening Selection: Room Airflow ÷ 3600 ÷ Velocity = Diffuser throat cross-sectional area. Note: The double-baffle duct opening area is the area obtained from the above formula ÷ 0.7.

Features of PP Square Pipe Products

1. The muffler is primarily composed of components such as the muffler tube, muffler plate, top and bottom covers (or caps), rain hat, throttle tube, throttle plate, connecting pipe (or flange), bracket, lifting ring, and label, etc.

2. Features easy installation, excellent noise reduction, and long lifespan.

3. The muffler can be independently supported, allowing for free expansion during operation and shutdown, ensuring that the exhaust pipe is not subjected to additional load due to the installation of the muffler, thereby guaranteeing the reliability of the exhaust pipe's operation.

4. Special moving connections can be used according to design or customer requirements.

5. The muffler is made of materials such as carbon steel or stainless steel, offering sufficient heat resistance and corrosion resistance, ensuring the equipment's long-lasting durability.