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Home>>Product>>Subsurface tools>>Fishing tools

Taper Taps & Die Collars

The? taper tap is a special fishing tool making thread on the inside wall of tube dropped objects such as drill pipe and oil tube, and the Die Collar is a special external fishing tool which is engaged on the outside wall of tubing objects such as oil tubing and drill pipe. They are made with chip groove so as to make threads easily. The taper tap and Die collar are made up of high quality alloy steel and processed by special heat treatment, having the advantages of high strength, high toughness and easy tapping.

Taper Taps
Tap Tapers

Die Collars
Die Collars

Taper tap specifications:

Type

Connection API

OAL
mm(inch)

Fishing ID Range

mm

inch

GZ-NC31-LH-1

NC31-LH

1607.3(63 9/32)

39-53

1 17/32-2 3/32

GZ-NC31-2

NC31

577 (22 23/32)

56-60

2 13/64-2 23/64

GZ-NC38-7

NC38

860 (33 55/64)

84-106

5/16-4 11/64

GZ-NC38-8

NC38

860 (33 55/64)

119-141

4 11/16-5 35/64

GZ-NC38-9

NC38

950 (37 13/32)

97-125

3 13/16-4 59/64

GZ-NC38-10

NC38

710 (27 61/64)

87-100

3 27/64-3 15/16

GZ-NC50-11

NC50

1130 (44 31/64)

82.5-121

3 1/4-4 49/64

GZ-NC50-12

NC50

930 (36 5/8)

69.9-95.3

2 3/4-3 3/4

Die Collar Specifications:

Type

Connection API

OAL mm(inch)

Fishing ID Range

mm

inch

MZ-2 3/8 REG-2

2 3/8 REG

550 (21 21/32)

73-80

2 7/8-3 5/32

MZ-3 1/2 REG-2

3 1/2 REG

600 (23 5/8)

89-100

3 1/2-3 15/16

MZ-NC31-LH-1

NC31LH

880 (34 41/64)

55-85

2 11/64-3 11/32

MZ-NC38-1

NC38

1000 (39 3/8)

63.5-101.6

2 1/2-4

MZ-NC50-1

NC50

1050 (41 11/32)

150-185

5 29/32-7 9/32

 

Releasing and Circulating Overshot

The releasing and circulating overshot is the fishing tool which is simple, high strength and high reliability and fishing from outside of fishing objects.? ?

The internal catch mechanisms have two basic types: a basket grapple and a spiral grapple. According to different uses, it may be equipped with accessories, such as extension sub, wall hook, oversize guide, etc.

? When ordering or requesting quotation, please specify:

1. Type of overshot;
2. O.D. of fishing objects to be caught;
3. Size and type of top connection;
4. If size other than standards, please specify clearly.

Releasing and Circulating Overshot
Specifications£º

 

Type

O.D.
mm (inch)

Max Catch Size mm(inch)


Connection
API

Basket Grapple

Spiral Grapple

LT102

102 (4)

57.2 (2 1/4)

70 (2 3/4)

NC26

LT111

111(3 3/4)

60.3 (2 3/8)

76.2 (3)

NC31

LT133

133 (5 1/4)

95.3 (3 3/4)

101.6 (4)

NC38

LT146

146 (5 3/4)

101.6 (4)

119 (4 11/16)

NC38

LT206

206.4 (8 1/8)

146 (5 3/4)

168 (6 5/8)

NC50

LT245

245 (9 5/8)

184.2 (7 1/4)

203 (8)

6 5/8REG

LT270

269.9 (10 5/8)

200 (7 7/8)

220 (8 21/32)

6 5/8REG

LT286

285.8 (11 1/4)

203 (8)

245 (9 41/64)

6 5/8REG

LT340

340 (13 3/8)

222 (8 3/4)

267 (10 1/2)

6 5/8REG

 
 

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