GB/T 9900-2008 in English
SUPERSEDEDRubber - or plastics-coated fabrics - Ventilation ducting
- Issued on:2008-05-14
- Implemented on:2008-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
本标准代替GB/T9900—1988《抽出式难燃橡胶导风筒》,原化工行业标准HG/T3325—1982《矿用胶布导风筒》也同时废止。本标准规定了橡胶或塑料涂覆织物导风筒的分类、结构、技术要求、试验方法、检验规则、包装、标志、运输和贮存等。本标准适用于以橡胶或塑料涂覆织物制成的正、负压导风筒。主要应用于矿井、隧道、水利工程、地铁和人防工程等。 本标准与GB/T9900—1988相比主要变化如下:
———名称不同;
———适用范围不同,增加了正压导风筒的要求(见第1章);
———增加了对涂覆织物物理机械性能的要求(本版的5.1.2);
———增加了长度为30m 和50m 的导风筒规格及外观检验要求(本版的5.2.1和5.2.2);
———增加了直径为1000mm 至1600mm 规格导风筒的要求及试验方法(本版的5.2.1和第6章);
———增加了导风筒接缝强度的要求(本版的5.2.3)。
Scope
This standard specifies the classification, structure, technical requirements, test methods, inspection rules, packaging, marking, transportation and storage of rubber or plastic coated fabric air ducts. This standard applies to positive and negative pressure ducts made of rubber or plastic coated fabrics. Mainly used in mines, tunnels, water conservancy projects, subways and civil air defense projects.

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