We are a professional manufacturer of API drill collar. Slick, spiral and non-magnetic drill collars
can all be offered.
Drill collars are manufactured from AISI4142H-4145H modified steel, and are supplied in the as rolled surface finish condition.
Alternative surface finishes can be provided.
Drill collars are trepanned and drifted to API Spec. 7 Latest Edition.
Full-length heattreatment processes ensure that mechanical properties meet or exceed API Spec. 7 Latest Edition requirements.
A hardness range of 285-341, Brinell Hardness and Charpy V notch minimum impact strength of 40 ft-lb at 700F are guaranteed one inch below the surface.
Contact Name: Mr. Jacky Kon
Company Name: LinSteel Group Co., Ltd.
Street Address: Linsteel New District,
Linfen City, Shansxi Province, 286000, China
Member name: paotian
Member Since: 11 October 2009
Total Leads: 1784 paotian Import Export Business Leads
Business focus: Galvanized Steel Coil, Pre-painted Steel Coil, Cold Rolled Steel Coil, Gi Coil, Hot Dipped Galvanized Steel Coil, Color Coated Steel Coil
Verify: Safe Import Export Tips
Product Category: Drill collars