凸面法兰 meaning in English

convex flange
male flange
raised face flange
raised-face flange

Face - to - face dimensions of standard raised face flanged end valves are shown on catalog pages covering dimensions for each valve
标准凸面法兰端口阀门的面对面尺寸在每个阀门的介绍页面中列出。
The machine can not only process the u 、 v welding line of end sloping back ridging , edge cutting for carbon steel stainless steel and allayed steel pipes , but also can treat the welded convex flange and plain flange
本机除对碳钢、不锈钢、合金钢等材料管子的u ， v型焊缝的坡口、例棱、削边等加工外，并能对焊后的凸面法兰和平面法兰进行加工。