Category: Equipment for Standards

3 Principle Welded corners and T-joints made from unplasticized polyvinylchloride (PVC-U) profiles are subjected to a tensile bending or compression bending test at specified temperature and test speed. The failure load is recorded and the failure stress is calculated. 4 Apparatus 4.1 Tensile or compression testing machine with the following specifications: a)measuring range of load…

3 Concepts3.1 Corrugated fibreboardBoard consisting of one or more sheets of fluted paper glued to or between one or more sheets of paper or board (facing) (from DIN 6735).3.2 Single-wall corrugated fibreboardBoard consisting of one sheet of fluted paper interposed between, and glued to, two facings (from DIN 6730).3.3 Multiple wall corrugated fibreboardBoard consisting of…

3 PrincipleThe times of flow of a solvent and a solution of resin in the solvent at a concentration of 0,005 g/ml aremeasured at 25 °C by conventional methods. The viscosity number is calculated from thesemeasurements and from the known concentration of the solution. Specific gravity difference and kineticenergy corrections are small in this method…

5 Apparatus 5.1 The test device may be constructed in different ways. In general, it consists of a horizontal test table, a sled, and a driving mechanism to produce a relative motion between the sled and the test table, regardless of which is the moving part. Figure 1 shows an example of apparatus in which…

5.5 Heat reversion 5.5.1 Main profile “When tested in accordance with EN 479 for each test specimen the heat reversion (R) of the two largest opposing sight surfaces shall not be > 2,0 %. The difference in heat reversion for each test specimen between these sight surfaces shall not be > 0,4 %. 5.5.2 Auxiliary…

Apparatus Tensometer capable of holding a constant force or alternatively, a test frame like the above picture. Including pneumatic cylinder, dead weights, and grip mechanism. Sample piece will have at least 300mm of pipe on both sides of the fitting to be tested. The force for testing will be calculated as below: Constant Load Creep…

9.1 Test criteria9.1.1 Material shall be classified 5VA or 5VB on the basis of test results obtained on small bar and plaquespecimens when tested as described in (9.2.1 – 9.6.5).Exception: For materials that are submitted for a 5VB rating only (i.e., the manufacturer does not seekthe 5VA rating), plaque specimens do not need to be…

3 PRINCIPLE OF TEST Determination of the change in mass of a test piece after immersion in sulphuric acid for a prescribed period. 4 REAGENT Sulphuric acid, p 1.84 g/ml (93 ± 0.5 % (m/m)). 5 APPARATUS 5.1 Balance, accurate to 0.001 g. 5.2 Beaker, to contain both the test piece and the sulphuric acid….

5 Apparatus5.1 Constant-Temperature Liquid Bath, capable of controlling accurately to ±0.5°C.5.1.1 The liquid for the bath should not plasticize or react with the specimens. Poly(ethylene glycol), glycerin, and water have been found to have wide applicability.5.2 Thermometer—ASTM Thermometer 1 °C conforming to the requirements as prescribed in Specification E 1.5.3 Square Metal Stamp, 100 by…