ISO 3861:2021 pdf download – Rubber hoses and hose assemblies for sand and grit blasting — Specification.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties ISO 188:2011, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests ISO 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hoses ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing ISO 4649:2017, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating cylindrical drum device ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and conductivity ISO 8033, Rubber and plastics hoses — Determination of adhesion between components ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary ISO 10619-1:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1: Bending tests at ambient temperature
8 Frequency of testing Type testing and routine testing shall be as specified in Annex A. Type tests are those tests required to confirm that a particular hose design, manufactured by a particular method, meets all the requirements of this document. The tests shall be repeated at a maximum of five-year intervals, or whenever a change in the method of manufacture or materials used occurs. They shall be performed on all sizes, and on all classes and types except those of the same size and construction. Routine tests are those tests required to be carried out on each length of finished hose prior to dispatch. Production acceptance tests are those tests, specified in Annex B, which should preferably be carried out to control the quality of manufacture. The frequencies specified in Annex B are given as a guide only. 9 Marking 9.1 Hoses Hoses meeting the requirements of this document shall be marked at least once every 760 mm with at least the following information: a) the manufacturer’s name or identification, e.g. XXX; b) a reference to this document, i.e. ISO 3861; c) the hose grade e.g. M or Ω; d) the inside diameter, in millimetres, e.g. 25; e) the maximum working pressure, in megapascals and in bars, or in either, with the unit indicated, e.g. 0,63 MPa (6,3 bar); f) the quarter and year of manufacture, e.g. 4Q21. EXAMPLE XXX/ISO 3861/Grade “M”/25/0,63 MPa (6,3 bar)/4Q21 For item b), the hose manufacturer shall use the latest edition of this document; otherwise, the year of publication shall be included in the marking.