These types of hoses have a lot of types since their usage areas are wider. Hoses are produced according to different types of mechanical and chemical features and separated from each other with regard to these features. For example, while the ventilation hoses are produced with PVC coated fabric, welding fumes hoses are produced with PVC coated fabric but including fire retardant. Nonetheless, the thickness of fabric and PVC coating hoses used in high-vacuum applications are bigger, than the others. Isolated ducts are used in transfer process of cold or warm air. Generally, the characteristics of the ducts are changed with regard to their usage areas.
PVC coating thickness
Use of fabric or not
Extra properties as fire retardant etc
The thickness of the fabrics used in the production
Spir range of the ducts
High quality, high cost-benefit rate hoses are produced by changing the production inputs as denoted above.
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