Material: 23CrNi3Mo Machine Type:drilling tools Thread type:R28 R32 R35 T35 R38 T38 T45 T51 Application:Coal Mining,Quarry drilling, Construction,Stone Drilling Advantage:high wear resistant, High Performance Length: 1-6.4m Certification: AISI, ISO9001 Color:Black Condition:New Warranty:6 Months Type:Drill Pipe Machine Type:Drilling Tool Processing Type:Forging Use:Drilling and Construction Applicable Industries:Construction works /Energy & Mining/rock drilling/mine drilling rig