Kelly is main driver of the whole drill string. It transmits
torsional energy from the rotary table through the drill string to
the bit at the bottom of the hole. TIANHE Kelly is a long square or
hexagonal, precision machined heavy steel bar that is supported by
the swivel through the rotary table and is connected to the first
joint of drill pipe in the drill string.Straightness of the kelly
is very crucial in the manufacturing process, thus straightness
inspections are carried out before, during and after each machining
operation. The flats are precision-milled to API specifications.
All milling processes are performed on specially designed rigid
Kelly mills to ensure tight tolerances and high quality drive
sections. Each TIANHE Kelly is furnished with a pressed steel
thread protectors.Features and BenefitsManufactured from AISI
4145H-modified, fully heat-treated alloy steel with a Brinell
hardness range of 285-341BHN and a minimum average Charpy impact
value of 40 ft-lbs;Ends and drive sections, IDs and connections
machined and inspected to API specifications;Ultrasonic inspection
is performed on all sections;Shipped in a protective steel-cased
scabbard;When ordering please specify:Kelly type (square or
hexagonal);Nominal size and overall length;Upper and lower
connections. Specifications - Rotary KellyNom Size (in)Square
kelly Product CodeHexagonal Kelly Product CodeTop
Connection(LH)Bottom
ConnectionI.D.(in)DriveSection(in)Standard
O.D.(in)Optional O.D.(in)Square
O.D.(in)Hex. O.D.(in)SquareHex.AB2 1/2Z03-130000 6
5/8 REG LH 7 3/44 1/2 REG
LH
5
3/4NC26
85.7 1 1/4 3 1/4 3Z03-130100Z04-1300006 5/8 REG
LH 7 3/44 1/2 REG
LH
5 3/4NC31 4 1/8NC26 3 3/81 3/41
1/43 3/83 3/83 1/2Z03-130200Z04-1301006 5/8 REG LH 7 3/44 1/2
REG
LH
5 3/4NC38 4 3/4NC31 4 1/82 1/41
3/44 7/1644 1/4Z03-130300Z04-1302006 5/8 REG LH 7
3/44 1/2 REG
LH
5 3/4NC46 6 1/4NC38 4 3/42
13/162 1/45 1/24 4/5Z03-130400Z04-1303006 5/8 REG
LH 7 3/44 1/2 REG
LH
5 3/4NC50 6 3/8NC38 4 3/42
13/162 1/45 1/24 4/55 1/4Z03-130500Z04-1304006 5/8 REG
LH 7 3/4 5 1/2
FH
7NC46 6 1/43 1/436 3/45
29/32Z03-130600Z04-1305006 5/8 REG LH 7
3/4 NC56
7NC50 6 3/83 1/43 1/46 3/45
29/326 Z04-1306006 5/8 REG LH 7
3/4 5 1/2
FH
7 3 1/2 6 13/16 Z04-1307006 5/8 REG
LH 7
3/4 NC56
7 3 1/2 6 13/16 Detailed
PhotosCertificationsPackaging & Shipping Company ProfileOur
AdvantagesTianhe principle is to offer high quality products
at competitive price to benefit our customers and the industry in
the long run. We are the
Leading manufacturer in China since 1973 for drilling /fishing /milling equipment for oil and gas.
We have established a complete quality control system, all
products& equipments manufactured as per international standard and
API standard.Competitive Advantages1. We offer high quality
products at competitive price.2. Shortest delivery time &
Flexible payment terms.3. Full range of
drilling /fishing /milling equipment for oil and gas.
4. Timely after-sale service.5. Imported International
brands Machines such as Japan Mazak machining center, Austria
WFL machining center etc6. Complete quality control system, offices
and testing
equipment. FAQDear customer,Thanks for your
time of visiting us on made in china, if you have any further
questions and needs, please kindly inform us by inquiry online or
contact us by below information.We look forward to your kind reply,
thanks very much.Ms. DongyanSales ManagerTianhe Oil Group Huifeng
Petroleum Equipment Co., Ltd./* March 10, 2023 17:59:20
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a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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