GB/T 12385-2008 in English
SUPERSEDEDStandard test method for sealability of gaskets for pipe flanges
- Issued on:2008-05-07
- Implemented on:2008-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$78.00
《GB/T 12385-2008管法兰用垫片密封性能试验方法》由TC237(全国管路附件标准化技术委员会)归口,主管部门为中国机械工业联合会。
本标准自实施之日起,代替GB12385―1990。本标准规定了管法兰用垫片密封性能的A、B两种试验方法。
本标准的两种试验方法均适用于石棉橡胶垫片,非石棉橡胶垫片,橡胶垫片,聚四氟乙烯垫片,膨胀或改性聚四氟乙烯垫片,柔性石墨复合垫片,缠绕式垫片,金属包覆垫片,聚四氟乙烯包覆垫片,具有非金属覆盖层的齿形金属、波形金属和波齿形金属垫片等。金属平垫片亦可参照该方法进行。 本标准是对GB/T12385―1990《管法兰用垫片密封性能试验方法》的修订,与GB/T12385―1990相比主要变化如下:
―――对标准的适用范围作了修改,增加了非石棉橡胶垫片,橡胶垫片,聚四氟乙烯垫片,膨胀或改性聚四氟乙烯垫片,柔性石墨复合垫片,具有非金属覆盖层的齿形金属、波形金属和波齿形金属垫片等;
―――针对所增加的垫片种类,补充增加了相应的试样预处理方法、垫片预紧应力、试验温度、试验介质压力等规定;
―――参照ASTM F112和F37,本试验方法B中的泄漏率测量采用压降法,其试验装置、试验程序、泄漏率计算等规定作了相应改变;
―――增加了对主要测量仪器的一般规定;
―――增加了对试验次数和试验报告内容的规定。
Scope
This standard specifies two test methods for the sealing performance of gaskets for pipe flanges - Method A and Method B. Both test methods are applicable to the following types of gaskets: asbestos rubber gaskets, non-asbestos rubber gaskets, rubber gaskets, polytetrafluoroethylene gaskets, expanded or modified polytetrafluoroethylene gaskets, flexible graphite composite gaskets, spiral wound gaskets, metal-coated gaskets, polytetrafluoroethylene-coated gaskets, and toothed metal, corrugated metal and corrugated metal gaskets with non-metallic covering layers. Metal flat gaskets can also be tested with reference to this method.

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