The laboratory ventilation ducts are individually made of PVC, PP, stainless steel, FRP and other materials according to the components contained in the exhaust air.

Ventilation ducts are classified according to material: individual: steel plate air duct (individual steel plate), galvanized sheet (white iron) air duct, stainless steel air duct, glass fiber reinforced plastic air duct, plastic air duct, composite material air duct, color steel sandwich insulation board air duct , Double-sided aluminum foil insulation ventilation pipe, single-sided color steel insulation ventilation pipe, rubberized cloth ventilation pipe (such as mining air duct), mining plastic ventilation pipe, etc.

Ventilation ducts are a kind of municipal infrastructure to smooth the air and reduce the concentration of harmful gases. Laboratory design structure and facilities, safe operating procedures, and safety equipment are suitable for microorganisms that are known to have no pathogenic effects on healthy adults, such as ordinary microbiology laboratories used for teaching. Ventilation ducts, sheets, profiles and other important finished materials used in the manufacture and installation of air ducts should conform to the current national standards for design and related products, and use the factory examination certificate. .

Recommendations for choosing ventilation ducts:

• The circular air duct has high ventilation efficiency but the diameter should not be too large. Laboratory design structure and facilities, safe operating procedures, and safety equipment are suitable for microorganisms that are known to have no pathogenic effects on healthy adults, such as ordinary microbiology laboratories used for teaching. Due to the large temperature difference between indoor and outdoor in northern winter, FRP products can be used for outdoor pipes. For individual laboratories, if the indoor gas is not corrosive, galvanized iron sheets may be used for air ducts. 

  
  

• If the exhaust gas discharged from the laboratory is corrosive to a certain extent, the air duct should be made of PVC and FRP air ducts with corrosion-resistant materials; if the exhaust gas of the ventilation system contains strong acids (such as hydrochloric acid, nitric acid, etc.), the ventilation ducts should be selected. PP material. Stainless steel ducts can also be used for no or only slight corrosion or customer request. 

  
  

• If the customer requests air supply to the system, galvanized pipes can be used for air supply, and low-noise axial flow fans can also be used for air supply fans. In special cases, hose connections (such as aluminum foil tubes, plastic soft tube, etc.)