关于垫片和螺栓连接? 5.1.1 flanges shall be faced for a confined gasket joint, either tongue and groove, or standard tema confined joint, unless specified otherwise. 实际意思就是说,密封面的形式必须是可以限制密封垫片的,这种密封面可以是榫槽式(tg),还可以是凹凸面(male female),因为他们都有槽可以限制垫片的移动,在换热器行业,如果介质毒性较高,或者介质易燃易爆,或者其他对密封性有要求的场合,就必须使用这种密封面(tg,mfm) all bolted joints for shells, channels and covers shall be of the through-bolt joint construction, except that above 105 kg/cm2 design pressure studded-in channel covers are acceptable. studded-in channel covers 是指嵌入式管箱盖板,即tema的“d”型,专用在高压场合,你可以下本tema标准看看查看更多