BS ISO 7331:2020 pdf free.Ski-poles for alpine and touring skiing一Requirements and test methods.
BS ISO 7331 This document defines the minimum requirements for safety in poles for alpine and touring sking. It specifies test methods to check conformity with these requirements.It is applicable to ski-poles for alpine and touring skiing in the following ranges of total length, lT:group A, lτ≥1 050 mm (adults’ poles);一group B, 1050 mm > Iτ≥700 mm (junior poles); -一group C, Ir < 700 mm (children’s poles).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 6508-1, Metallic materials一Rockwell hardness test一Part 1: Test method ISO 6508-2, Metallic materials一Rockwell hardness test一Part 2: Verification and calibration of testing machines and indenters ISO 6508-3, Metallic materials一Rockwell hardness test一Part 3: Calibration of reference blocks.The three longest and the three shortest poles from each group shall be submitted to the laboratory. In addition, three poles of 1 200 mm length lr from testing group A, and three poles of 1000 mm length Ir from testing group B shall be submitted to the laboratory. One long pole and one short pole shall be selected for the tests to be carried out in accordance with 6.4 to 6.13.If one test sample fails these tests, the tests shall be repeated with two further test poles which shall both pass the repeated tests.For adjustable touring ski-poles, three samples shall be tested. Adjustment according to the testing requirements to the minimum intended length/maximum intended length. All samples shall pass the test.Determine the release force at 20 °C five times per function on one test sample and calculate the mean value.Store the release mechanism at a temperature of -5 °C until this temperature is reached. Determine the release force once and compare it with the mean value at 20 °C.Again, determine the release force at 20。C five times on one test sample and calculate the mean value.Spray the vertically placed ski-pole with water at 10 °C or more for 1 min from a distance of 1 m. Store the pole vertically at -5 °C until it reaches this temperature, then determine the release force once and compare it with the mean value at 20 °C.BS ISO 7331 pdf downlaod.