... polish ,threaded 3) lost wax 4) standard:ASTM Round base stanchion of investment castingSpecification1, investment casting ,precision casting2, carbon steel ... , AP,QP,QA,QC,AOL,RDThe ultimate success of casting design deponds on the communications between the designer ... /2degree where existing distortion could be expected .Inclusion of gussets and ribs normally minimizes distortion and many section ...