Product Description
We are a wellknown trademark enterprise, estabilished in ***3. It
has been certified to ISO, API, and HSE management system. Clients
include Weatherford, Schlumberger, Halliburton, Bowen, Smith,
National Oilwell Varco,Boredrill, and etc.
Strict metallurgical tests are performed per specifications to
ensure that the heat treatment produces consistent and maximum
hardness through the depth of the bar.
A hardness range of **5 to **1 BHN and a Charpy impact value of *0
ft-lbs are guaranteed for evenly distributed *6 points in any cross
sections at room temperature;
Connections are phosphate coated after machining to protect the
threads from corrosive elements and to prevent galling upon initial
make-up;
Thread roots are cold rolled on API and H**0 connections;
Pressed steel thread protectors are supplied for all drill collar
that are equipped with standard connections
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(Negotiable)
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