Roller Centralizer/Casing Centralizer/ drill pipe

Large stock of all kinds of Casing centralizer/ Non-welded bow spring centralizer for pipe

13 3/4'' Non-welded bow spring Casing Centralizer/ Casing centralizer for pipe

Casing centralizer/ Non-welded bow spring casing centralizer for pipe

8 1/2'' Halliburton PDC BIT/Great PDC BIT with great body design and Smith/Hughes main cutter

7 7/8'' Smith Bit/ Hughes Bit/ Great PDC BIT with seven blades for hard formation drilling

13 1/2''Steel Body Diamond PDC BIT/ Great PDC BIT/ Smith bit/ Hughes Bit for drilling

16'' Steel Body PDC BIT/Diamond drill Bit with 16mm Smith/ Hughes main cutter

61/4''Matrix Body Diamond PDC BIT/ Diamond Bit with 13mm main cutters for oilfield drilling

59mm&76mm&112mm Drag Tricone Bit/ Step Drag Bit/ Drag Bit for drilling

Large stock of new Step Drag bit/ Drag Bit/ Drag Tricone Bit for drilling

All kinds of Step Drag Bit/ Drag Bit/ Bladed Bit for drilling

API Step Drag Bit/Drag Bit /Blade bit for water well drilling

Steel Tooth Tricone Bit/ Milled Tooth Rock Bit/ Smith Bit for water well drilling

12 1/4'' IADC: 127 Steel Tooth Tricone Bit/ Milled Tooth Bit/ KINGDREAM drill bits

7 7/8'' HAT127 Steel Tooth Tri-cone Rock Bit with trimming teeth for water well drilling

6 1/2'' IADC:537 TCI Tri-cone Rock Bit/ Roller Cone Bit/ Tricone Bit for drilling

5 7/8'' HAT537G Roller Cone Bit/ Tricone Bit/ TCI Bit/ KINGDREAM Bit

Renew 17 1/2'' IADC:537 TCT Bit/ Rock Bit/ KINGDREAM Bit for hard formation drilling

22'' Used TCT Tricone Rock Bits /Rock Bit for drilling