Quick Details
Condition:New
Warranty:1 YEAR
Applicable Industries:Machinery Repair Shops, Retail, Energy & Mining
Local Service Location:None
Showroom Location:None
Place of Origin:Shandong, China
Type:Non Magnetic Drill Collar
Machine Type:Drilling Tool
Certification:API
Material:High Manganese Steel
Processing Type:Forging
Use:Well Drilling
Size:3 1/8″ -11″
Thread protector:Yes
Supply Ability
Supply Ability:500 Piece/Pieces per Month
Packaging & Delivery
Packaging Details:standard export package
wooden box:as your request
Port:Qingdao
Lead Time :
| Quantity(Pieces) | 1 – 50 | >50 |
| Est. Time(days) | 30 | To be negotiated |
Product Description
We supply slick drill collars, spiral drill collars and non-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers’ request.
Materials:
Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the “as rolled” surface finish condition. Alternative surface finishes are available.
Rigid Inspection Procedures:
We inspect all our drill collars to ensure compliance with API SPEC 7-1 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 plated to improve resistance to corrosion.
Slip Groove, Elevator Groove and Size:
Lake 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 spec 7-1 guidelines.
Thread Protectors:
Our company offers steel, cast steel and plastic steel thread protectors for its drill stem products.
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