Beijing United Test Co., Ltd products

ISO 1806 specifies a method of determining the mesh-breaking force of netting for fishing. Tests may be carried out in both the dry and wet states but tests in the wet state are considered to be particularly appropriate in indicating the behaviour of the netting in use. Mesh from the net is tested in dry and/or wet conditions. A sample of mesh is cut to include a central ‘cell’ surrounded by at least one cell on all sides. The central mesh element is placed at right-angles between 2 roller pins at a known separation distance. Rope bollard grips ensure that the netting material is not subject to local stress raisers at their contact points. Tensile load is applied to the mesh at a constant rate of extension and force is applied such that the mesh will break around 20 seconds later.  The maximum force in tension is recorded in daN for each of 10 different mesh specimens taken from the same net and tested in a batch.