... 4.Carbon steel,alloy steel Product name: Forging bearing rings ,Forging shaft sleeve, alloy steel shaft sleeve forging ... air forging hammer (75KG,150KG,250KG,400KG). cutting machine etc. The main inspection equipments: Spectrometer,Magnetic Particle ... Inspection,Universal Testing Machine, X-Ray Inspection Equipment,hardness testing machine etc. Main productsAuto forging parts ...