管套 pipe sleeve
正三通 Tee
管帽 pipe cap
90弯头 normal bend
截止阀 stop valve
异径管套 reduced pipe sleeve
管卡 pipe clip
法兰连接 flange connection
丝堵 pipe plug
内丝弯头 interior plug pepe bend
外丝弯头 exterior plug pepe bend bushing
外丝管套 exterior plug pipe sleeve
外丝活接 exterior plug union swivel
桥架 support end piece
异径三通 reduced tee / reducing tee
内丝三通 interior plug tee
内丝活接 interior plug union swivel