Product Application

Underground support

Threaded drilling rodss for underground support drilling operations

The thread connection drill tools for underground support drilling operations include thread column-tooth drill bits, reaming drill bits, thread drill rods, guide drill rods, connection sleeves and shanks.

Threaded button bits	Thread drill bit	R23、R25、R28、TR28、R32、TR35、T35
Threaded button bits	Bit diameter	32mm、33mm、35mm、37mm、38mm、41mm、43mm、45mm、48mm、51mm、54mm、57mm、64mm、76mm
Reaming bits	Thread specification	R25、R28
Reaming bits	Diameter of reaming drill bit	57mm、64mm、70mm、76mm、89mm
Coupling	Thread specification	R25、R28、R32、R38、T38
	Product diameter	35mm、40mm、45mm、56mm、57mm、59mm
	Product length	150mm、160mm、170mm、177mm、180mm、190mm、195mm
Threaded drilling rods	Thread specification	R23、R25、R28、TR28、R32、TR35、T35
	Drill rod specification	H22、H25、H28、H32、H35、D32、D36、D39
	Drill rod length	610mm、915mm、1220mm、1525mm、1750mm、1830mm、2095mm、2175mm、2300mm、2475mm、2700mm、2875mm、2975mm、3090mm、3400mm、3500mm、3700mm
Guide drill rod	Thread specification	T35
	Drill rod specification	D48
	Drill rod length	1220mm、1525mm、1830mm

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