BS EN ISO 3861:2021 pdf free

BS EN ISO 3861:2021 pdf free.Rubber hoses and hose assemblies for sand and grit blasting一Specification.
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 Ii;
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/O,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.
9.2 Hose assemblies
Hose assemblies meeting the requirements of this document shall be permanently marked with at least the following information:
a) the manufacturer’s name or identification, e.g. XXX;
b) the maximum working pressure of the assembly, in megapascals and in bars, or in either, with the units indicated, e.g. 0,63 MPa (6,3 bar);The maximum working pressure of a hose assembly is equal to the maximum working pressure of the component having the lowest maximum working pressure.
c) the four digits of the year of assembly followed by a slash and the two digits indicating the month of assembly, e.g. 2021/12 (monthly, daily and other date-coding methods are allowed as long as they are clear to the user).
EXAMPLE XXX/0,63 MPa (6,3 bar)/2021/12.
NOTE Typical markings include but are not limited to stamping the ftting socket, embossing on a metal or plastic ring.
The sequence of the elements is optional and they do not need to be in one row.BS EN ISO 3861 pdf download.