Professional Design Grooved Reducer Coupling Pipe Fittings For Pipeline System 1 Press fitting range Coupling-Equal Coupling,Reducing coupling,Slip .....
High Hardness Grooved Reducer Coupling For Automatic Sprinkler System 1 Press fitting range Coupling-Equal Coupling,Reducing coupling,Slip coupling, ....
2 Way Grooved Reducer Coupling Corrosion Resistant For Railway Station Airport 1 Press fitting range Coupling-Equal Coupling,Reducing coupling,Slip .....