... 4.low price nickle plating round base plate with slots and holes for heavy machineryproduct namedimension(mm)materialfinish and weight(kg ... M20*90º d12H12S355JR nickle plating ,7.6kgbase plate for heavy machinery can be used in petroleum ,water, gas and other fields. ... ,milling,CNC and CNM machining,grinding ,threading,polishing ,plating ,acid treatment.standards:ASME,ANSI,API,JIS,JPI,BS,AS (Foreign ...