89mm diameter
T/T, Western Union, MoneyGram
10000 pieces per month
10-15 days
In bundle
DTH DRILL PIPE,Down the Hole (DTH) Pipes
rock drilling
3 1/2" API REG thread or API IF thread,2 3/8'',3 1/2'',2 3/8" API REG thread,etc. API REG
Carbide Alloy Steel
black or customized
Supplying dimensions and materials testing report
Well Drilling,Rock Drilling,oil and gas