concrete pump coupling, precision process without metal cutting, which results in dense internal metal from and texture without fracture. The substantial increase in strength of materials reduces the weight of spare parts.
Galvanization or Baking varnish.
                                      
Type: adjustable shaft snap coupling
Size: 2 inch to 7 inch
Material: 40CR
Pressure: 130bar
Brand: Putzmeister,schwing,cifa,junjin,sany,zoomlion.
Packaging: In wooden case.
Use for concrete pump truck pipe connection.

Advantages:
Wear resistant coupling.long time life.
Easy to install and use.