China drill collar Manufacturers Factory Suppliers
WebThe Drill Collar is located at the lowest part of the drill string and is made of rolled or forged AISI4145H chromium-molybdenum alloy steel, which can effectively control the chemical composition...
Drill Collar Availablility and Description -- Superior Energy Brands -- HB Rentals International Snubbing Services Stabil Drill Superior Energy - Completion Services Wild Well Control...
Drill Collar OD Range (in) 3 1/8” through 6 7/8” 7” through 11” Min. Elongation % 13 Hardness (Brinell) HBN 285–341 Min. Yield Strength Min. Tensile Strength MPa 758 689 MPa 965 930 PSI 110 000 100...
1-48 of 585 results for "drill stop collar" RESULTS Amazon's Choice Drixet Drill Stop Bit Collar Set – Kit Includes: 1/8", 3/16”, 1/4”, 5/16”, 3/8”, 7/16” and 1/2-Inch with Allen Wrench to Tighten...
WebDrill Pipe Inc. manufactures Drill Collars from 4140 Q&T and/or 4145 Q&T Alloy. Each Drill Collar is Integral Design, No Mid-Welds. Threaded in Precision CNC Lathes. Our Drill Collars deliver the...
Drill collars are trepanned and drifted to API Spec. 7-1. Full-length heat-treatment processes ensure mechanical properties meet or exceed API Spec. 7-1 requirements. A hardness range of 285-341...













