Product Description 1. Produce strictly in accordance with standard dimension 2. Material: 1045 Steel / Alloy Steel / Stainless Steel 304 & 316  3. Standard: ANSI, DIN, JINS, ISO, KANA,Standard America or customer’s drawing 4. Pilot bore, finished bore, taper bore and special bore.  5. Bright surface / high precision / Blacking /Electrophoretic-Coated 6. Advanced … Continue reading China Professional Galvanized Sprocket Surface