ballast block hammar head material: 45# rough machining, normlizing and finish machining Forged Hammar Head1,Type: Different forgings with customers' design2,Features: Forged Hammar Head3,Standards: ASTM, ASME, DIN, SIS and EURONORM 4,Certification: -ISO9001: 2000 -CCS quality management system certification -TUV Rheinland -AD2000-W0 product accreditation 5,Dimension: acc to the drawing6, ...