Punching Steel Detachable Chain

Punching Metal Removable Chain (32W)1. Substance: Alloy Steel2. Surface Treatment: Shot Peening, Electrophoretic Paint, Blackeningthree. Warmth treatment method: Quenchingfour. Hardness: HRC forty5. Type: 32, 32W, fifty one, 62six. Lubrication: Mild anti-rust oil7....