Shun Kai ventilation pipe, duct plates, profiles, and other major finished materials used in the manufacture and installation shall comply with the provisions of the current standards of design and related products, countries, and application delivery inspection for compliance certification, materials approach according to current national standards acceptance. Ventilation ducts according to the material: the ventilation ducts 
 : Steel duct (ordinary steel), galvanized sheet (tin) duct, stainless steel ventilation tube, glass fiber reinforced plastic ventilation tube, plastic ventilation tube, composite vent pipe, vent pipe of the color steel sandwich insulation board, adhesive cloth ventilation tube ( such as mine with a hairdryer), mine with a plastic vent pipe; 
 Ventilation ducts by Purpose: 
 General: back to the air duct purification system, central air conditioning ventilation pipe, industrial pipe supply and exhaust ventilation, environmental systems suck the exhaust pipe, mine drainage gas pipe, mining adhesive cloth hairdryer; 
 Ventilation ducts according to the shape: 
 In general are: round, rectangular, spiral; 
 Ventilation ducts according to the process: 
 Can be divided into the angle iron, flange duct. 
 Edit this paragraph applications 
 Duct is mainly used in industrial and construction projects, applications mainly related to: electronics industry clean plant purification system, sterile plant purification system of medicine, food, hotels, shopping malls hospitals, factories and offices, central air-conditioning systems, industrial pollution control dust, smoke, oil absorption, exhaust pipe, industrial environment or job comfortable with the blast pipe, coal mine drainage gas with drainage gas system, the coal mine environmental control back to the air system ... and so on;