Min. Order: | 1 Piece/Pieces |
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Trade Term: | FOB |
Payment Terms: | L/C, T/T |
Supply Ability: | 10pcs/month |
Place of Origin: | Shaanxi |
Location: | Xi'an, Shaanxi, China (Mainland) |
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Business Type: | Manufacturer, Distributor/Wholesaler, Service |
Model No.: | Top-Square kelly-001 |
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Means of Transport: | Ocean, Air, Land |
Size: | 2 1/2"-5 1/4" |
Use: | Well Drilling |
Brand: | ZZ Top |
Material: | AISI4145H |
Standard: | API |
Processing Type: | Forging |
Package: | Shipping scabboard |
Length: | 40ft |
Working space: | 37ft |
Production Capacity: | 10pcs/month |
Packing: | Scabboard |
Delivery Date: | 15days |
Standard Square Kelly is made from AISI 4145H alloy steel according to API Spec7-1. We can offer Square Kelly and Hexagonal Kelly. Kelly's ends drive cross-section and joint are all processed and tested in terms of API Spec7-1.
It is formed through hot forging and fully heat-treated by intermediate frequency induction heat treatment or 20m horizontal optical resistance furnace. Threads can be phosphated, copperized or cold worked.
Features:
1. We can manufacture square kelly and hexagonal kelly as per requirements of customers.
2. 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.
Size | Length in | Upper box connection | Lower pin connection | I.D. | Driving section | |||||||
mm | in | Type(LH) | O.D. | Thread | O.D. | Cross flat | For square kelly | Cross corner for hexa kelly | ||||
Std | optional | Std | optional | |||||||||
63.5 | 2 1/2 | 12.19 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC26 | 85.7 | 31.8 | 63.5 | 83.3 | |
76.2 | 3 | 12.19 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC31 | 104.8 | 44.4 | 76.2 | 100.0 | 85.7 |
88.9 | 3 1/2 | 12.19 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC38 | 120.6 | 57.2 | 88.9 | 115.1 | 100.8 |
108.0 | 4 1/4 | 12.9 | 6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC46 | 158.8 | 71.4 | 108.0 | 141.3 | 122.2 |
6 5/8REG | 4 1/2REG | 196.8 | 146.0 | NC50 | 161.9 | 71.4 | 108.0 | 141.3 | 122.2 | |||
133.4 | 5 1/4 | 12.9 | 6 5/8REG | 196.8 | 5 1/2FH | 177.8 | 82.6 | 133.3 | 175.4 | 151.6 | ||
6 5/8REG | 196.8 | NC56 | 177.8 | 82.6 | 133.3 | 175.4 | 151.6 |
Process procedure
Package
When ordering Please specify:
1. Kelly type (square or hexagonal);
2. Nominal size and overall length;
3.Upper and lower Connections.