Inquiry Basket (
Dill Collar
 Dill Collar |
Product Description
Materials:
Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the" as rolled" surface finish condition. Alternative surface finishes can be provided.
Trepanning and Heat treatment:
Drill collars are trepanned and drifted to API Spec 7. Full-length heat-treatment processes ensure that mechanical properties meet or exceed API Spec 7 requirements. A hardness range of 285-341, Brinell Hardness and Charpy notch minimum impact strength of 40 ft-lb at 70OF are guaranteed one inch below the surface.
Traceability:
Drill collar material and process traceability are maintained from receipt of mill s certified raw material to completion of all the manufacturing. Serial numbers are die stamped on bar bodies.
Rigid Inspection Procedures:
We inspect all our drill collars to comply with API standards. These inspections include visual dimensional checks as well as ultrasonic inspections over the entire body of the drill collar.
Cold Rolling:
Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled. Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation.
Phosphate-coated or copper plating:
All connections are phosphate-coated or copper plating to improve resistance to corrosion.
Slip groove. Elevator groove and size:
Our company offers optional slip and elevator recesses to improve handling efficiency and safety. Unless otherwise specified, slip and elevator recesses are machined in compliance with API RP 7G guidelines.
Thread protectors:
Our company offers steel and cast steel and plastic steel thread protectors for its drill stem products.
| Company: | Shenzhen Pufeite |
|---|
Other products from this company
Most Popular
-
Fuel Dispenser -4
Lanfeng new series exploit series fuel dispenser. ... -
Reactor
Zhangjiagang Chemical Machinery Co., Ltd. is a ... -
Bypass Manifold
The bypass manifold is used with well testing ...
-
Fuel Dispenser Nozzle
Auto nozzle is designed in accordance with ideal ... -
HSS Hand// Machine Taps
We also producing all kinds of HSS hand and ... -
API 5CT Tubing and Casing Pipe
API 5CT tubing 1)API No.: 5CT-1199 ...
-
Automatic Nozzle (YC-20B)
Whole Spout to avoid leakage after service long ... -
Screw Pump
Screw pump in oil production is a kind of ... -
T C I Tricone Rock Bits (8 1/2" IADC 637)
Sizes from 3 7/8" to 26" Covers almost all IADC ...
-
Tee
Semaless steel tee Straight tees&crosses ... -
Wearing Bush
Product: Wearing Bush Material: Steel Usage: ... -
TC Bearing
TC Bearing
-
3-Piece Sleeve Replaceable Stabilizer
The 3-piece sleeve replaceable stabilizer is made ... -
Electric Transfer Pump (YB40A-DC12)
YB40A with DC 12V&24V is an high efficiency ... -
ATEX CE Automatic Nozzle
3/4" and 1" ATEX CE certificated automatic nozzle
Recommended Products |
 |
Quick Products |
