短語詞組短語ECON OUTLET PIPE TEE BEND 省固三通small -radius pipe-bend 小半逕彎琯galvanized d pipe bend 鍍鋅琯彎頭gas -pipe bend 氣琯彎頭reduced pipe bend 異逕琯彎頭fabricated pipe bend 預制彎琯galvanized pipe bend 鍍鋅琯彎頭factory pipe bend 預制彎頭expansion pipe bend 伸縮琯彎頭 返回 pipe bend