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BS EN 856:2015 pdf free

BS EN 856:2015 pdf free.Rubber hoses and hose assemblies – Rubber-covered spiral wire reinforced hydraulic type一Specification.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 1302, Geometrical Product Specifications (GPS) – Indication of surface texture in technical product documentation (ISO 1302)
EN ISO 1402:2009, Rubber and plastics hoses and hose assemblies – Hydrostatic testing (ISO 1402:2009)
EN ISO 4671, Rubber and plastics hoses and hose assemblies – Methods of measurement of the dimensions
of hoses and the lengths of hose assemblies (ISO 4671)
EN ISO 6743-4, Lubricants, industrial oils and related products (class L) – Classification – Part 4: Family H (Hydraulic systems) (ISO 6 743-4)
EN ISO 6803, Rubber or plastics hoses and hose assemblies – Hydraulic-pressure impulse test without flexing(ISO 6803)
EN ISO 7326, Rubber and plastics hoses – Assessment of ozone resistance under static conditions (ISO 7326)
EN ISO 8033:2006, Rubber and plastics hoses – Determination of adhesion between components (ISO 8033:2006)
EN ISO 10619-2, Rubber and plastics hoses and tubing – Measurement of flexibility and stiffness – Part 2:
Bending tests at sub-ambient temperatures (ISO 10619-2)
ISO 1817:2005, Rubber, vulcanized – Determination of the effect of liquids
ISO 23529, Rubber – General procedures for preparing and conditioning test pieces for physical test methods
3 Types of hose
Four types of hose are specified:
1) Type 4SP — a 4-steel wire spiral medium pressure hose;
2) Type 4SH — a 4-steel wire spiral extra high pressure hose;
3) Type R12 — a 4 steel wire spiral heavy duty high temperature hose — medium pressure rating;
4) Type R13 — a multiple steel wire spiral heavy duty high temperature hose — high pressure rating.
4 Materials and construction
4.1 Hoses
Hoses shall consist of an oil and water resistant synthetic rubber lining, spiral plies of steel wire wrapped in alternating directions, and an oil and weather resistant synthetic rubber cover. Each spiral wire ply shall be separated by an insulating layer of synthetic rubber.
4.2 Hose assemblies
Hose assemblies shall only be manufactured with those hose fittings whose functionality has been verified in
accordance with subclauses 6.1, 6.3, 6.4 and 6.5 of this European Standard.
5 Dimensions
5.1 Diameters and concentricity
When measured in accordance with EN ISO 4671, the diameters of the hoses shall conform to the values given in Table 1.BS EN 856 pdf download.

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