供应PPH对焊三通(用于管路改走向) ¥45.00 供应PPH热熔承插三通(用于管路改走向) ¥45.00 供应PVDF法兰隔膜阀 ¥300.00 供应PVDF法兰球阀 ¥255.00 供应pvdf双活接球阀 ¥170.00 供应FRPP由令球阀 ¥70.00