roll chock ASTM,EN,DIN,BS,AS,GB,Carbon Steel&Alloy,etc. Roll chockLarge casting mechanical part, fabrication, steel rack, steel frameMaterial: UNS J04000,DIN GS-60/GS-62,W-Nr. 1.0553/1.0555,ISO 270-480, or as your drawings GBASTMUNSDINW-NRJISBSZG200-400/J01700GS-38GS-CK161.01461.1142SC360AW1CLA9ZG230-450LC8J03003GS-52GS-CK161.05511.1155SC410CLA1GR.BZG270-500/J04000GS-60GS-CK621.05531. ...