... Color: white,red,grey,yellowMaterials:: ST37,ST52,45Mn2,20#steel etcPackaging & Delivery Packaging Detail: plastic woven bags with ... Quality: hight wear-resisting3.Material:ST52,45Mn 2,20# steel,etcConcrete Pump Reducing/Taper Pipenameconcrete pump reducing/taper ... 5mOther sizes and types upon requestMaterialST37.0, 20#steel,Q235 ,35# steel, Mn13 and according to clients” requirementtechnicfrequenc ...