smooth turned sealing surface finish (关于法兰)? all flanges shall have a smooth turned sealing surface finish in the range of 0.8 to 1.6 microns ra. when not specified, the manufacturer shall be responsible to ensure that the facing is suitable for ... 所有的法兰密封面应该有光整的车削加工面,其粗糙度应介于ra0.8到1.6微米之间. 二楼说谓的microinch应该是mil,音译为密尔.查看更多