This standard specifies a hydrostatic pressure test method for determining the water permeability of fabrics. This standard is mainly applicable to compact fabrics, such as canvas, oilcloth, tarpaulin, tent fabric, rainproof clothing fabric, etc.
GB/T 4744-1997 history
2013GB/T 4744-2013 Textiles.Testing and evaluation for water resistance.Hydrostatic pressure method
1997GB/T 4744-1997 Textile fabrics--Determination of resistance to water penetration--Hydrostatic pressure test