
	Sub

	Standard drill pipe

	Special drill pipe

	Shock absorber

	1" dth hammer

	2" dth hammer

	3" dth hammer

	4" dth hammer

	5" dth hammer

	6" dth hammer

	8" dth hammer

	10" dth hammer

	12" dth hammer

	Dth hammers Summary

	Dth bits

	Eccentric Overburden System

Coring equipment

Sub

Characteristics

Adaptors are used when two different types of thread need to be connected together. All wide variety of thread types is possible.