1.Model:DN80,DN100,DN125,DN150,DN175,DN200 2.Mat:rubber 3.Color: White,Black Truck-mounted concrete pump ... for more information.Our product range is as follows; 1. pipeline(wear-resistant seamless tube)material:45Mn2,high ... ,other sizes upon to your request 4.reducer Material:45Mn2,Length:1.2M,1.6m,all size as to your ... sealing rings Concrete pump sealing rings without lip(3'',4'',5'',6'',7'',8'',9'')