This specification primarily covers greige tapes and webbings woven from "E" electrical classification glass fiber yarns. This specification can also be applied to tapes and webbings made of other glass fiber grades upon agreement between the purchaser and the supplier. Greige glass fiber tapes and webbings are produced in two types: type A - medium texture, and type B - open texture. The fabric count, yarn number, filament diameter, strand construction, twist direction, twist level, weave type, length per unit mass, thickness, breaking force, width, length, ignition loss, and visual appearance shall be tested to meet the requirements prescribed.

1.1 This practice primarily covers greige tapes and webbings woven from “E” electrical classification glass fiber yarns. This practice can also be applied to tapes and webbings made of other glass fiber grades upon agreement between the purchaser and the supplier.

1.2 This practice is intended to assist ultimate users by designating the types of these products that are typical in the industry. This practice permits the application of organic materials to the glass fiber yarn during manufacture that helps facilitate weaving. When used as permitted in this practice, such materials will not interfere with the intended end use requirements.

1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.