Drill Kelly

Kellys are manufactured with one of two drive configurations, square or hexagonal. Square kellys are furnished as forged or machined in the drive section. Hexagonal or fully machined square kellys are machined from full length quenched and tempered round bars. Square Kelly and hexagonal kellys are fabricated as per requirements of customers. The kellys 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: >or =54J. The formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. Kelly bars are manufactured according to API-7-1 Spec.

Kellys are manufactured with one of two drive configurations, square or hexagonal. Square kellys are furnished as forged or machined in the drive section. Hexagonal or fully machined square kellys are machined from full length quenched and tempered round bars.

Kellys are manufactured with one of two drive configurations, square or hexagonal. Square kellys are furnished as forged or machined in the drive section. Hexagonal or fully machined square kellys are machined from full length quenched and tempered round bars. Square Kelly and hexagonal kellys are fabricated as per requirements of customers. The kellys 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: >or =54J. The formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. Kelly bars are manufactured according to API-7-1 Spec.

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

Now Shenwei Kelly bars have been supplied to BAUER, SOLIMEC, IMT, CMV, MAIT, CASANGRADE ,TESCAR and other drilling rigs imported or locally-made, exported to many countries such as Germany, Malaysia ,Turkey, India, Russia, Ukraine all over the world. These kelly bars are successful used even in the toughest operating conditions. Our Services 1.After-sale and your any inquiried will be dealed within within 24 hours. 2.Desigened according to advanced Modular-element principle with six ribs laid on tubes. 3.The advantages of our Kelly bar, such as low weight, high strength, high abrasion-resistance, high-reliability are safeguarded. 4.Take use of alloy seamless tube imported from Germany Mannesmann or locally-made. Special hot-treatment enhances the material’s strength more than 800Mpa. 5.Ribs made of alloy hot-treated specially enjoy both high hardness and perfect welding performance, high abrasion-resistance leads to high-reliability. 6.Square-stub through forging and heat treating have excellent mechanical properties. 7.Small clearance and high-precision mating of the drill pipe ensure its good working order and service performance. 8.Steel pipes through shot blasting have high surface quality and fatigue strength. 9.Automatic welding equipment can reduce welding defects and promote the reliability of weld seam. 10.Fulfill the rotary drilling rig full torque operation. Company Information Xuzhou Shenwei Foundation Machinery Technology Co., Ltd is located in xuzhou city, jiangsu province in China, we are a leading manufacturer of rotary drilling rig Kelly bars in China. All products are designed by technicians and engineers with many years experience. Shenwei Kelly bar is known for it’s high strength, rigid construction, less maintenance and high durability. We have all kinds of steel pipe, advanced processing equipment and welding equipment, Strict quality control system. Our products can be used full torque.Patent technology specially made six sections kelly bar and five sections interlocking kelly bar significantly improved the rotating drill construction abilit. There are a lot of finished products and semi-finished products inventory in warehouse, production cycle is short, fast delivery.

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

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).

Model: SANY220 Type: Interlocking Out diameter: 440mm Sections: 4 Each section length: 13m Weight: 9.4T Now Shenwei Kelly bars have been supplied to BAUER, SOLIMEC, IMT, CMV, MAIT, CASANGRADE ,TESCAR and other drilling rigs imported or locally-made, exported to many countries such as Germany, Malaysia ,Turkey, India, Russia, Ukraine all over the world. These kelly bars are successful used even in the toughest operating conditions. Our Services 1.After-sale and your any inquiried will be dealed within within 24 hours. 2.Desigened according to advanced Modular-element principle with six ribs laid on tubes. 3.The advantages of our Kelly bar, such as low weight, high strength, high abrasion-resistance, high-reliability are safeguarded. 4.Take use of alloy seamless tube imported from Germany Mannesmann or locally-made. Special hot-treatment enhances the material’s strength more than 800Mpa. 5.Ribs made of alloy hot-treated specially enjoy both high hardness and perfect welding performance, high abrasion-resistance leads to high-reliability. 6.Square-stub through forging and heat treating have excellent mechanical properties. 7.Small clearance and high-precision mating of the drill pipe ensure its good working order and service performance. 8.Steel pipes through shot blasting have high surface quality and fatigue strength. 9.Automatic welding equipment can reduce welding defects and promote the reliability of weld seam. 10.Fulfill the rotary drilling rig full torque operation. Company Information Xuzhou Shenwei Foundation Machinery Technology Co., Ltd is located in xuzhou city, jiangsu province in China, we are a leading manufacturer of rotary drilling rig Kelly bars in China. All products are designed by technicians and engineers with many years experience. Shenwei Kelly bar is known for it’s high strength, rigid construction, less maintenance and high durability. We have all kinds of steel pipe, advanced processing equipment and welding equipment, Strict quality control system. Our products can be used full torque.Patent technology specially made six sections kelly bar and five sections interlocking kelly bar significantly improved the rotating drill construction abilit. There are a lot of finished products and semi-finished products inventory in warehouse, production cycle is short, fast delivery.

1) od: 2 7/8", 3 1/2", 4", 4 1/2", 5" 5-1/2" 2) steel grade: e75, x95, g105, s135 3) type of end finish: eu-external upset, ieu-internal & external upset 4) all drill rod are made according to api 5d standard 5) we can provide in many conditions, with or without hard banding 6-11m