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China, Chinese API Drill Collars for Oil & Gas Industries1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Drilling ToolsDrill CollarAPI Drill Collar7-1 Drill Collar
Goldenman Petroleum Equipment Co., Limited
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Product Description DRILL COLLAR 1. Material of API 7-1 Non-Magnetic Drill Collar Slick Drill Collar OD 79.4mm to 279.4mm: 4145H/4145H mod or Non-magnetic.2. Standard: API7-1, NS-1.A. Slick Drill CollarNote: The drill collar primarily serves to provide necessary bit weight to the drill bit, thereby ensuring that the drill pipe remains in tension. Notably, the drill collar is capable ofmaintaining centralization of the drill bit and ensuring the hole's trajectory due to its high rigidity. These drill collars are meticulously manufactured in compliance with API Spec7-1 andSY5411 standards.B. Spiral Drill CollarNote: The spiral design of this drill collar is specifically crafted to minimize contact with the borehole, effectively preventing bit sticking due to differentialpressure. These drill collars are rigorously manufactured according to API Spec7-1 and SY5144 standards.C. Spiral Drill Collar With Elevator Groove And Slip GrooveNote: The elevator and slip grooves embedded on the box thread face of both slick and spiral drill collars serve as efficient liftingsubs and safety slips during tripping out. The technical parameters for these grooves are defined according to API SPEC7-1. Optional hardbanding is available upon customer request.D. Non-magnetic Drill CollarThe cold-rolled finish on both the ID and OD surfaces, combined with a unique technical process, fortifies the structure and offers superior resistance to stress, corrosion, and cracking, thereby significantly enhancing the mechanical performance.High Quality API 7-1 NS-1 Non-Magnetic Drill CollarSpecifications for API 7-1 Non-Magnetic Drill Collar Slick Drill Collar OD 79.4mm to 279.4mm ConnectionsODmmIDmmLengthmmNC23-3179.431.89150NC26-3588.938.19150NC31-41104.850.89150 or 9450NC35-47120.750.8915 or 9450NC38-50127.057.29150 or 9450NC44-60152.457.29150 or 9450NC44-60152.471.49150 or 9450NC44-62158.857.29150 or 9450NC46-62158.871.49150 or 9450NC46-65165.157.29150 or 9450NC46-65165.171.49150 or 9450NC46-67171.457.29150 or 9450NC50-67171.471.49150 or 9450NC50-70177.857.29150 or 9450NC50-70177.871.49150 or 9450NC50-72184.271.49150 or 9450NC56-77196.871.49150 or 9450NC56-80203.271.49150 or 94506 5/8REG209.671.49150 or 9450NC61-90228.671.49150 or 94507 5/8REG241.376.29150 or 9450NC70-97247.676.29150 or 9450NC70-100254.076.29150 or 94508 5/8REG279.476.29150 or 9450
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