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  • Releasing Slip Fishing Spear - China

    price: contact company for price

    Description : Releasing Spears provide a dependable,

    inexpensive, and simple means of engaging a fish internally.

    These Spears assure positive engagement, easy release from

    the fish when desired, and easy re-engagement after the

    Spear has been released.

    Features: Releasing Spear consists of a Mandrel, Grapple,

    Release Ring, and Nut. The Mandrel may be obtained in either

    a Flush Type or a Shoulder Type. Mandrel top connections are

    furnished to order.

    The Nut can be obtained as a plain bull nose guide or with a

    pin connection for the attachment of other tools below the


    Assembly and Operation:

    To Assemble: Screw the Grapple onto the Mandrel from the

    lower end with a left-hand action. Slide the Release Ring on

    below the helical section of the Mandrel and make up the Nut

    to the Mandrel. Before running in, screw the Grapple down

    against the Release Ring as far as it will go by hand. In

    this position, the Grapple will compress inward and will not

    engage the pipe sufficiently to interfere with the tool

    being run in.

    To Engage the Fish: When the Spear has reached the point of

    desired engagement with the fish, rotate sufficiently to

    move the Mandrel one full turn to the left. This turns the

    Mandrel down through the Grapple, placing the Grapple into

    the engaging position. A straight pull will then wedge the

    Grapple into positive engagement with the fish.

    To Release: Bump down to break the freeze, then rotate two

    or three turns to the right. This moves the Mandrel up

    through the Grapple, forcing the Grapple against the Release

    Ring and putting the Spear in released position. A straight

    upward pull will then generally free the Spear; however, it

    is recommended that the Spear be rotated slowly to the right

    when coming out. The matching cams of the Release Ring and

    Nut constitute a safety device which resists freezing or


    Company Contact:

    • Phone: 8613614631909

    • Address: Dongxu 2st, No.5, Aimin Dis, Mudanjiang , China

    • Email: Email

    Published date: February 10, 2014 -

    • Business Description: Mudanjiang Dongxu Machinery Co.,Ltd has been honored with API spec 7 1

      certificate by America Petroleum Institute. Our factory covers an area

      of 20000square meters with a very strong team of technicians and

      researchers, possesses reliable production lines and advanced


      Our products: drilling tools,fishing tools,coring tools, diamond core bit, milling tools and so on. Our team will manufacture from existing designs or collaborate with the customer to design and manufacture to their specifications.

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