Hardfacing 6 1/2 Inch Roller Bearing Tricone Bits for HDD Drilling

=== Base Info ===

• Model NO.：6 1,2 Inch IADC637
• Bearing Type：Journal Bearing
• Seal：Metal O-Ring
• Color：Golden
• API Reg Pin：3 1,2 Inch
• Usage：Mining Exploration
• Bit Size：6 1,2 Inch(165.1 mm)
• Trademark：superior
• Transport Package：Wooden,Plywood Case
• Specification：Tungsten Carbide Insert
• Origin：Hejian, China
• HS Code：8431432000

=== Description ===