(1) During storage, especially long-term storage, the physical properties of hoses and hose assemblies will change, causing them to lose some of their optimum properties before use. Therefore, the storage conditions should provide the hose and hose assembly with the best protection and the lowest degree of deterioration.
(2) The storage time should be as short as possible. Inventory product turnover must abide by the "first in, first out" rule. If it is stored for a long time, the performance test of the PU hose should be carried out before use.
(3) The storage temperature should be between 0 and 35°C, preferably around 15°C. During storage, the temperature of the PU hose should not exceed 50°C or -30°C, nor should it fluctuate abnormally.
(4) The relative humidity shall not exceed 65%.
(5) PU hoses should be stored in a dark place away from sunlight and strong artificial light sources. If there are windows or light holes in the product storage area, they should be covered with red, orange or white hoods.
(6) Because ozone will have a harmful effect on rubber products, no devices that can generate ozone should be parked in the storage area. Examples are mercury vapor lamps, high voltage electrical devices, electric motors or other devices capable of generating sparks or discharges.
(7) Rubber and hoses must not be placed together with certain products or exposed to the volatile gases of these products. Also do not contact certain metals, such as copper, iron and manganese, which can have a harmful effect on certain rubber products.
(8) PU hose products should be stored away from heat sources. There should be a sufficient distance between the product and the heat source to ensure compliance with the provisions of Article 4.3.
(9) The storage area of PU hose products should be kept away from equipment that can generate electric and magnetic fields. Because changes or fluctuations in the electric field or magnetic field can generate magnetically induced currents in the metal, resulting in heat generation.
(10) PU hose products should be stored and placed in a way that cannot withstand excessive stress, elongation or deformation, and should avoid contact with sharp objects or the ground. Whenever possible, use storage racks to store hose products. Coiled hose or hose assemblies should be stored flat and preferably not stacked. If stacking is unavoidable, the height of the stack should be limited to a limit that does not cause permanent deformation of the hoses stacked on the bottom layer. Coiled hose products shall not be suspended from stakes. Hoses and hose assemblies supplied in a straightened state should be stored flat and not bent.
(11) PU hose products should be protected from rodents, and if there is such a danger, appropriate protection should be provided for the product.
(12) It should be noted that it is necessary to ensure that the outbound PU hose products are stored under correct storage conditions and consistent with their intended use. Therefore, the identification of different types of hose products in stock is important. For hose assemblies with non-permanent couplings, such as hose assemblies with adjustable clamp-holder structures, inspections should be performed to ensure reliable performance of the couplings.
(13) Drain the conveyed material before the used hose assembly is returned to storage. Pay more attention to those hoses used to transport chemicals, explosive, flammable or corrosive materials. Hoses should be inspected after cleaning and before being returned to storage to determine their suitability for further use.
