... ~4000diameter 3.Standard:ISO,ASTM,JIS,DIN,BS Stainless Worm Gear ISO9001:2000 system certifiedStandard: ISO, ASTM JIS, DIN, ... quality,reasonable price,considerate service.... Production way: Brass by Sand Casting, Centrifugal casting and Metal mould CastingDimensions: ¢10~¢4000mm ... , Cast metal part, Copper fitting, Copper nut, Bushing, Gear, Worm and Worm Wheel,Copper bushing and all non-ferrous ...