Features

1.The best alloy steel and tungsten carbide tips

2.Uses the best copper welding

3.Special heat treatments

4.The coal round pick cutter bits are suitable....

Features

1.The best alloy steel and tungsten carbide tips

2.Uses the best copper welding

3.Special heat treatments

4.The coal round pick cutter bits are suitable....

Features;
1.Diafferent sizes available
2.Tapered drill rods;
3.Raw materials; 55SiMnMo, 95CrMo
4.Taper; 7, 12
5.Length under collar[ mm] ; 610.1220.1830.2000.2435.2740.
....

Features
1.Tapered connection 4Â ° .6Â ° .7Â °
2.Alloy steel
3.The sutiable and good quality cabide tips
4.The diameter size from20--60mm

Packing
Wooden or plastic box
....

1) Tapered connection: 6Â ° , 7Â ° , 12Â °

2) Threaded connection: R22, R25, R28, R32, R38, T38, T45, T51

3) Diameter: 30-127mm

4) the best alloy steel

Shandong Yanggu....