Rugao Yaou Import & Export Trade Co., Ltd.

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	Lift Subs

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No.	Normal Size mm(in)	OD（mm）	Connection(API)	OD of Dill Pipe(API)	OD of End Elevate(mm)
1	73.0 (2-7/8)	31.8	NC23	79.4 (3-1/8)	111.1
2	73.0 (2-7/8)	44.5	NC26 (2-3/8)*	88.9 (3-1/2)	111.1
3	88.9 (3-1/2)	54.0	NC26 (2-3/8)*	104.8(4-1/8)	127.0
4		50.8	NC35	120.7(4-3/4)
5		68.3	NC38(3-1/2IF)*	127.0 (5)
6	127.0 (5)	71.4	NC44	152.4 (6)	168.3
7		71.4		158.9 (6-1/4)
8			NC46 (4IF)	158.9 (6-1/4)
9		82.6		165.1 (6-1/2)
10				171.5 (6-3/4)
11			NC50 (4-1/2)IF*	177.8 (7)
12			NC50 (4-1/2)IF*	184.2 (7-1/4)
13			NC56	196.8 (7-3/4)
14			NC56	203.2 (8)
15		95.3	6-5/8REG*	209.6 (8-1/4)
16			NC61	228.6 (9)
17			7-5/8REG*	241.3 (9-1/2)
18			NC70	247.7 (9-3/4)
19			NC70	254.0 (10)
20			NC77	279.4 (11)

Drill Collar Lift Subs are of one-piece construction and manufactured from alloy steel fully heat-treated. This heavy-duty type Drill Collar Lifting Sub is designed for use with the drill pipe elevators. The structure includes sloping shoulder and straight shoulder, which can be selected by customs. Drill Collar Lifting Subs are normally manufactured 1200mm long overall .The size of others are indicated in the table . However, this type sub can be made to any lengths desired.

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