Bevel Gear Bevel GearStandard: GB, JIS, ASTM and non-standard. Module: 0.2~10. Outer diameter: 6~800mm Material: Mild steel, cast steel, cast iron, forged steel, stainless steel, alloy steel, plasitc, POM, aluminium alloy, zn alloy, bronze, brass, chrome, 40Cr, 20CrMnTi. Surface treatment: Carburizing, hardening and tempering, nitriding, high frequency treatment, black of oxidation, zincing, ...