... 4*M20*90º d12H12S355JR nickle plating ,7.6kgbase plate for heavy machinery can be used in petroleum ,water, gas and other ... shafts ,cylinders,inserts,lifting and cargo-handling appliances, and machinery parts for the usages on textile ,passenger elevator and wind power ... machining,grinding ,threading,polishing ,plating ,acid treatment.standards:ASME,ANSI,API,JIS,JPI,BS,AS (Foreign ) GB ,JB,HG,SH ...