SHANDONG SAIGAO GROUP CORPORATION
SHANDONG SAIGAO GROUP CORPORATION
Releasing Back Off Spear

Releasing Back Off Spear

Releasing back off spear is used for fishing, back off and releasing the fish. It can catch fish and at the same time transmit left hand torque in back off operation. It can instead of left-hand taper taps and die collars. The function is similar to back off sub. The difference is that it does not need to make up thread with the fish, it can catch at any parts of the fish's ID.


Technical Specification of Releasing Back Off Spear

Model

Fishing Pipe OD

Catching Range

Connection

mm (inch)

mm (inch)

DLM-T60

60.33 (2-3/8)

50.8 (2)

2-3/8REG

DLM-T73

73 (2-7/8)

57.2 (2-1/4)〜77.9 (3-1/16)

NC31

DLM-T89

88.9 (3-1/2)

76.2 (3)-90.1 (3-35/64)

NC31

DLM-T114

114(4-1/2)

97.2 (3-53/64)〜103.6 (4-5/64)

4-1/2REG

DLM-T127

127 (5)

108.7 (4-9/32)〜115.8 (4-9/16)

4-1/2REG

DLM-T140

139.7 (5-1/2)

118.6 (4-43/64)〜127.3 (5-1/64)

NC50


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Zhongrun Century Center, No 12111,Jingshi Road, Lixia District, Jinan City, Shandong Province. P.R. China