concrete mold 1,Quality Assurance: ISO9001 2,Materials: HSS M2, SKH9, ASP 3,as custom inquriy 4,8-10 work days concrete mold specificationsconcrete mold Type circular, Square Header , hexagonal , R-shaped…concrete mold MaterialHSS M-2, SKH-9, SKD11,ASP23,ASP30...concrete mold Surface TreatmentTIN TICN TIALN CRN ..concrete mold Length Tolarance+/-0.01concrete mold Diameter Tolerance+/-0. ...