GB/T 7690.3-2013 (English Version) PDF

Standard No.: GB/T 7690.3-2013
Language: Chinese, Available in English version
Release Date: 2013
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 7690.3-2013
Replace: GB/T 7690.3-2001

Scope: 1.1 This part of GB/T 7690 specifies the method for measuring the breaking strength and elongation at break of glass fiber yarn provided in package form. 1.2 This method is applicable to various types of glass fiber yarns (single yarn, ply yarn, cable yarn, raw silk, absolute roving, roving, etc.). For single yarn, plied yarn and cabled yarn, it is basically suitable for yarns with a diameter of less than 2 mm or a linear density of less than 2 000 tex taken from the package. If the test conditions provided can be accepted by all stakeholders, it can also be used Determination of yarns with a diameter greater than 2 mm or a linear density greater than 2 000 tex. 1.3 This method is not applicable to glass fiber yarns whose elongation exceeds 0.5% under the conditions of standard environmental humidity adjustment and 5 mN/tex pretension. Such yarns can be tested with lower pretensions (e.g. 2.5 mN/tex or 1 mN/tex) under conditions agreed by the various stakeholders. This situation mainly occurs in staple fiber yarns.

GB/T 7690.3-2013 Referenced Document

GB/T 2918-1998 Plastics--Standard atmospheres for conditioning and testing
GB/T 7690.1-2013 Reinforcements.Test method for yarns.Part 1:Determination of linear density

2013 GB/T 7690.3-2013 Reinforcements.Test method for yarns.Part 3:Determination of breaking force and breaking elongation for glass fibre
2001 GB/T 7690.3-2001 Reinforcements--Test method for yarns Part 3: Determination of breaking force and breaking elongation for glass fibre