Xi'an Tydrillbits Co.,Ltd is one of the most famous China cross bit manufacturers, welcome to wholesale cheap drill bit carbide from our factory. Description of carbide bits Carbide bit material adopts superior cemented carbide and, welding adopts self-developed process, strength is higher than similar products, bit body is more wear-resistant. Carbide bit is suitable for coal mining, iron ore mining and rock drilling. Carbide bit is divided into cross bit, chisel bit and button bit. Choosing a right carbide bit can improve the drilling efficiency and reduce your cost. Specification of cross bit Drill diameter Taper(°) Drill diameter Taper(°) mm in mm in 28 1 3/32 6,7 45 1 3/4 6,7,11,12 30 1 3/16 6,7 50 1 31/32 6,7,11,12 32 1 1/4 6,7,11,12 60 2 3/8 6,7,11,12 34 1 11/32 6,7,11,12 76 3 6,7,11,12 35 1 3/8 6,7,11,12 89 3 1/2 6,7,11,12 36 1 13/32 6,7,11,12 102 4 6,7,11,12 38 1 1/2 6,7,11,12 115 4 1/2 6,7,11,12 40 1 9/16 6,7,11,12 127 5 6,7,11,12 41 1 5/8 6,7,11,12 140 5 1/2 6,7,11,12 42 1 21/32 6,7,11,12 152 6 6,7,11,12 43 1 11/16 6,7,11,12 PS: We can also design all kinds of alloy bore bits according to your requirements. Application of cross bit Cross bit is strong radial abrasion resistance and it is applicable to  drill fracture rock and abrasive layers. It is suitable for kinds of rock drilling machine.