Drill Kelly:
Kelly is on the top of the drill stem.Kelly is main driver of the whole drill string. It transmits drill stem weight and torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. When assembled with down hole motor and Turbodrill tools, Kelly should bare the stem weight and Reverse torque,it will Measure the depth of a well and provide a circulation channel. Kelly consists of a driving part (square or hexagonal), upper joint (LH connection) and lower joint (RH connection).
Product details of API Spec 7-1 standards Drilling Rig Square Kelly and Hexagonal Kelly for Sale Kelly is the drive part of whole drill string, it transmit the torsional energy from the rotary table to the in the bottom of the hole. The precision-machined kelly is a heavy square or hexagonal steel bar supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string. Our kelly has been approved by the NS-1 certification. Straightness is the key manufacturing process. Straightness is checked before, during and after each machning operation. Flats are precision-milled to API and NS-1 specifications. All milling is performed on specially designed rigid kelly mills.Each kelly is furnished with a pressed steel thread protectors. Features of Kelly They are made of AISI 4142H-4145H forged or rolled alloy structural steel. Quenching plus tempering thermal treatment will be conducted over the whole length. Its Brinell hardness can reach 285-341 on the basis of such thermal treatment. Charpy impact energy: 54J. The formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. When ordering the Kelly please specify: 1. kelly type(square or hexagonal) 2. nominal size and overall length 3. upper and lower connection
Supplier: 304 stainless steel pipes, carbon steel pipes, galvanized steel pipes, seamless pipes, stainless steel pipes, used drill bits
Buyer: Used drill bits and drill pipes, tubing, casing
Drill Bits
Drill Machine
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Buyer: Chemical products.
Kelly is the drive part of whole drill stem, it has two types, square kelly and hexagonal kelly and all of them are manufactured comfort to API Spec7-1 and SY/T6509-2000 criterion. Our Square& Hexagonal kelly are made from AISI 4145H modified alloy bars that are quenched and tempered full length. After such heat treatment, its brinell hardness can reach 285-341. Kelly's end, drive cross-section and joint are all processed and tested comform to API criterion. Features and Benefits Manufactured from AISI4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHN and a minimum average Charpy impact value of 40ft-Ibs; Ends and drive section,IDs and connections machined and inspected to API specification; Ultrasonic inspection is performed on all section; Shipped in a protective steel -cased scabbard; When ordering please specify: Kelly type (Square or hexagonal) Nominal size and overall length Upper and lower connection Technical specification and parameters
Supplier: Sugar, urea and rock phosphate, Ductile iron pipes and fittings, carbon steel pipes and fittings, surge arresters and composite insulators (11 223 kv), heavy machinery attachments for excavators and skid loaders, fuel oil, pet coke and iron pellets, aerosol fire suppression devices
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Buyer: Lithium carbonate
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