Using super coarse grain cemented carbide as raw material and 100% alloy after pressure sintering, the hardness and toughness of the drill bit can be increased by 30% simultaneously
1.Standard:API, API 5L2.Thickness:1-80 mm3.Outside Diameter:20-660 mm4.Length:12m,11.8m,6m,5.8m,or as customers required5.Surface:Customers Requirement