... 4.low price stainless steel round grooved flange with threaded holes for heavy machinery steel round flange for heavy machineryproduct namedimension ... materials processed ability: iron , ductile iron , carbon steel ,alloy steel .stainless steel ,brass, copper,bronze , aluminum alloy or special ... threading,polishing ,plating ,acid treatment.standards:ASME,ANSI,API,JIS,JPI,BS,AS (Foreign ) GB ,JB,HG,SH( ...