Product Description Gear-Ring Type Pipe Coupling Flexible Joint Stainless Steel Multi-Function Pipe Coupling Product Parameters Material: Name Gear-Ring Type Multi-Function Pipe Coupling Shell, Bridge Plate, Bolts and Gear -Ring Stainless steel 304/316           EPDM/NBR  Rubber Sealing Sleeve Temperature:(-20ºC~+140ºC)  Medium Available for various kinds of Water, drainage,air,solid and chemicals Product Description Product Features:Double-Section Pipe Repair Coupling is … Continue reading China Professional Gear-Ring Type Pipe Coupling Flexible Joint Stainless Steel Multi-Function Pipe Coupling gear coupling