... :2008 CERTIFIED.2, Different kinds of gears, worm gears3, Standard and non-standard4, Material C45, 40Cr. 42CrMo. GG25,GGG40,GGG45, S ... performance of transmission! Our gear can be standard as per European or American standard or special as per your drawings or ... faces and roots to increase load capacity7) Standard: ISO, GB, JIS, DIN, AGMA and non-standard8) Surface treatment: Carburizing, hardening and ...