Available sizes:

4 5/8"(118mm), 5 7/8"(149mm), 6"(152mm), 6 1/2"(165mm), 6 5/8"(168mm),

7 1/2"(190mm), 7 7/8"(200mm),

8 1/2"(215.9mm), 9 1/2"(241mm),

9 5/8"(245mm), 11 5/8"(295mm),

12 1/4"(311mm), 13 5/8"(346mm),

14 3/4"(374mm), 15 1/2"(394mm)

16"(406mm),    17 1/2"(445mm),

18"(457mm),     26"(660mm)

Model NO.

437,447,517,527,537,547,617,637,737

IADC CODE

116,117,126,127,136,137,216,217,316,317,346,347

RPM(r/min)

140~60

WOB(KN/mm)

0.35~1.0

Thread Connection

7 5/8 reg pin

Bearing type

Sealed bearing and non-sealed bearing

HJ(metal sealed journal bearing)

HA(rubber sealed journal bearing)

Aircooled bearing type

Applicable Formations

Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc

Circulation system

Mud pump

Material

Alloy steel, carbide

Delivery terms

By sea or by air

application

Petroleum and gas, water well, mining and tectonic industries, oil field, construction, geothermal, directional boring and underground foundation work

Export Markets

North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe