1.
The water circulation, elastomer&mental-face sealed roller bearing tricone bit .
2.
Sy/t5217-2000 and api spec7-1 standard;
3.
Gauge protection extend period of using life
ons for water well and oilfield
7.
The size range from 3 7/8 to 22.
Wooden box
Please ask detailed and specific
questions about Pricing, Minimum Order Quantity, Delivery Timelines etc. Detailed Messages
result in prompt responses.
