API Reduced Section Sub Rotary Subs

• Customization: Available
• After-sales Service: Provide
• Warranty: 1 Year
• Model NO.: KAIDI
• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Color: Blue
• OEM: Provide
• Alloy: 4145h
• Others: API and ISO
• Transport Package: Wooden Case
• Specification: I. D. 44.5mm-82.6mm
• Trademark: KAIDI
• Origin: China
• HS Code: 8431431000

Product Description

The Lifting Sub is a special tool for lifting drilling tools in oil and gas and geological exploration drilling projects. The lifting sub is made of heat-treated alloy structural steel.
It is designed and manufactured in accordance with API specifications.
The lifting sub allows safe and efficient loading and unloading of drilling tools such as drill collars, drill pipe, drilling jars and other tools.

Lifting Sub     <API Spec7-1>
Size	Elevator Recess Dia.	I.D.	Total length	Tool Joint Size			Lifting Size		Weight
				Connection	Tool Joint OD	Bottom Length	Dia. of Lift Shoulder	Top Length
	mm	mm	mm		mm	mm	mm	mm	Kg
TSDJ86	60.3	44.5	915	NC26	86	356	85.7	102	15
TSDJ105	73	54	915	NC31	104.8	356	104.8	102	30
TSDJ121	88.9	50.8	915	NC35	120.7	356	120.6	102	53
TSDJ152	101.6	71.4	915	NC44	152.4	356	152.4	102	86
TSDJ159	114.3	82.6	915	NC46	158.8	356	158.8	102	89
TSDJ165	127	82.6	915	NC46	165.1	356	165.1	102	95
TSDJ178	139.7	82.6	915	NC50	177.8	356	177.8	102	106
TSDJ203	168.3	82.6	915	NC56	203.2	356	203.2	102	132

Saver Sub
When rods is added to increase the depth of drilling, the loosening of
the threads are now performed at the bottom end of the Saver Sub as opposed to the bottom of the Kelly which is the most valuable part of the drill string. This means that the connection between the top end of the Saver sub and Kelly is seldom used, and suffers minimal wear and tear, whereas the lower connection is used in almost all cases displacing the most wear and tear from the rotary head connection to the much cheaper Saver Sub which is expendable and reduce cost.
Straight OD Sub
Straight OD Sub is used to connect drill stem members that have a similar outside diameter. The drill bit, downhole tools, heavy weight drill pipe and drill pipe can be crossed over using a straight OD sub.
Reduced Section Sub
Reduced Section Sub is used to connect drill stem parts that have different diameters. This sub can be used to crossover large OD
drilling tools or a tapered drill collar string.