Views:20 Author:UGW hose Lara Publish Time: 2021-02-07 Origin:UGW hose Lara
Recently, hydraulic system designers began adopting ISO specifications. Many large OEMs switched to ISO standards in their design and manufacturing process to ensure the sale and service of their equipment globally. ISO Standard 18752, released in 2006, takes a different approach centered around the design practices of users who typically design hydraulic systems based on performance and pressure requirements.
ISO 18752 has nine pressure classes for maximum working pressure, ranging from 500 to 8,000 psi. Hydraulic hoses meeting ISO 18752 specifications are classified according to their resistance to impulse pressure in four grades: A, B, C, and D. Each grade requires a specific number of impulse cycles at a certain temperature and impulse pressure in order to meet the standard. In addition, the grade is then classified by the OD of the hose into standard types (AS, BS, CS) or compact types (AC, BC, CC, DC). Compact types have a smaller OD and bend radius than the standard types.
Each grade requires a specific number of impulse cycles the hose must meet at a specified temperature and impulse pressure. The table below explains, in detail, the ISO 18752 performance specifications.ISO 18752 classifies hoses according to their resistance to impulse into four grades: A, B, C, and D. Each grade is classified by outside diameter into standard types (AS, BS, and CS) and compact types (AC, BC, CC, and DC).
Note that ISO 18752:2014 does not include requirements for end connections. It is limited to the performance of hoses and hose assemblies. The hose assembly maximum working pressure is governed by the lowest maximum working pressure of the components.
UGW hydraulic hose could reach at Grade B in pressure and impulse standard today and strive for grade C in next step. We are welcome all the friends contact us for details of constant pressure hose.
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