concrete pump double wall reducer pipe,reducing pipe Concrete pump reducing pipe is a spare part for pipelines. 1.Material: ST52, 45Mn2, Q235,20#,37Mn5 etc. 2. Sizes: DN60-DN180 (mm unit) 3. Length: 1m,2m,3m, 6m or according to clients’ requirements. Our normal reducer for SCHWING  : DESCRIPTION  DN1 DN2 LENGTH (MM)  Reducer  150 125 1240 Twin wall reducer  150 125 1240 Reducer  150 125 1330 Twin wall reducer  150 125 1330 Twin wall reducer  150 125 1500 Reducer  150 125 1600 Twin wall reducer  150 125 1600 Our normal reducer for PUTZMEISTER  : DESCRIPTION